Defecte Frana de Mana

Chassis

JM0B - JM0C - JM0F - JM0G - JM0H - JM0J - JM0U

77 11 322 262

"The repair procedures given by the manufacturer in this document are based on the technical specifications current when it was prepared.

The methods may be modified as a result of changes introduced by the manufacturer in the production of the various component units and accessories from which his vehicles are constructed."

FEBRUARY 2006

All rights reserved by Renault s.a.s.

Edition Anglaise

Copying or translating, in part or in full, of this document or use of the service part reference numbering system is forbidden without the prior written authority of Renault s.a.s.

© Renault s.a.s. 2006

AUTOMATIC PARKING BRAKE

FPA Vdiag: 0C - 04 - 08EDITION 3Introduction 37B-1Fault finding log 37B-7System operation 37B-9Allocation of computer tracks 37B-13Replacement of components 37B-14Configuration and programming 37B-17Fault summary table 37B-18Interpretation of faults 37B-19Conformity check 37B-73Status summary table 37B-97Interpretation of statuses 37B-98Parameter summary table 37B-102Interpretation of parameters 37B-103Interpretation of commands 37B-104Customer complaints 37B-109Fault finding chart 37B-110

37B

ASSISTED PARKING BRAKEFault finding - Introduction 37B

37B-1

137BFPA

Vdiag No.: 0C, 04 and 08

ASSISTED PARKING BRAKEFault finding - Introduction

1. SCOPE OF THIS DOCUMENT

This document presents the fault finding procedure applicable to all computers with the following specifications:

2. PREREQUISITES FOR FAULT FINDING

Documentation typeFault finding procedures (this manual):– Assisted fault finding (integrated into the diagnostic tool), Dialogys.

Wiring Diagrams:– Visu-Schéma (CD-ROM), paper version.

Type of diagnostic tools– CLIP

Special tooling required

3. RECAP

Procedure

To save power, the UCH on the Laguna II Phase 2, Espace IV phase 1 and 2 and Vel Satis phase 1 and 2 interrupts the + after ignition feed power supply after 3 minutes.

To perform fault finding on a computer, it is possible to force the + after ignition feed for 1 hour by applying the following procedure:

– Press the unlocking button on the card,– Insert the card into the reader,– press the Start button (interrupting the timed + after ignition feed mode),– press and hold the Start button for more than 5 seconds until the engine immobiliser warning light starts to flash

rapidly (4 Hz).This forced + after ignition feed mode remains active for 1 hour.Pressing the Start button or removing the card from the reader cuts off the forced + after ignition feed but does not cut off the timed forced + after ignition feed mode. As long as one hour has not elapsed the + after ignition feed function restarts the forced + after ignition feed for the remaining time.

Vehicle(s): Vel Satis phase 1Vel Satis phase 2Laguna II phase 2ScénicEspace IV phase 1Espace IV phase 2

Function concerned: Assisted parking brake

Name of computer: FPA

VDIAG No.: 0C, 04, 08

Special tooling required

Multimeter

Elé. 1681 Universal bornier

FPA_V0C_PRELI/FPA_V04_ PRELI/FPA_V08_ PRELI FPA


37B-2

FPAVdiag No.: 0C, 04 and

08

Only affects the Scénic phase 2:

To run fault finding on the vehicle's computers, switch on the ignition in fault finding mode (forced + after ignition feed).Proceed as follows:– card in the card reader (keyless vehicle scenario 1, basic, not hands-free and scenario 2, top of the range,

hands-free),– press and hold the starter (for more than 5 seconds) with start-up conditions not met;– connect the diagnostic tool and perform the required operations.To cut off + after ignition feed, proceed as follows:– disconnect the diagnostic tool,– press the Start button twice briefly (less than 3 seconds).– ensure that the + after ignition feed has been cut off by checking that the computer indicator lights on the instrument

panel have gone out.

Fault context.

Only affects Vdiag 08 and 0C.

Explanation of the fault context counters.The are three different counters:

PR022: Dating counterPR018: Presence counterPR019: Frequency counter

Dating counter: The counter starts when the fault appearsEach time the computer switches on and the fault is stored or present, the counter increases by 1 up to 255.

Presence counter: As soon as the fault is present, the counter goes to 15.If the fault becomes stored, each time the computer switches on, the number decreases by 1 (from 15 to 0) and goes back to 15 again if the fault reappears.

Frequency counter: Number of times the present fault appears; it sets to 0 when the fault appears.It increases each time the fault moves from stored to present.The maximum value of this counter is 15.

FPA


37B-3


08

Faults

Faults are declared as either present or stored (depending on whether they appeared in a certain context and have disappeared since, or whether they remain present but have not been diagnosed within the current context).

The present or stored status of faults should be taken into consideration when the diagnostic tool is switched on after the + after ignition feed (without any system components being active).

For a present fault, apply the procedure described in the Interpretation of faults section.

For a stored fault, note the faults displayed and apply the instructions in the Notes section.

If the fault is confirmed when the instructions in the Notes section are applied, the fault is present. Deal with the fault.

If the fault is not confirmed, check:– the electrical lines which correspond to the fault,– the connectors for these lines (for oxidation, bent pins, etc.),– the resistance of the component detected as faulty,– the condition of the wires (melted or split insulation, wear).

Conformity check

The aim of the conformity check is to check data that does not produce a fault on the diagnostic tool because the data is inconsistent. Therefore, this stage is used to:

– carry out fault finding on faults that do not have a fault display, and which may correspond to a customer complaint.

– check that the system is operating correctly and that there is no risk of a fault recurring after repairs.

This section gives the fault finding procedures for statuses and parameters and the conditions for checking them.If a status is not behaving normally or a parameter is outside the permitted tolerance values, consult the corresponding fault finding page.

Customer complaints - Fault finding chart

If the test with the diagnostic tool is OK but the customer complaint is still present, the fault should be processed by customer complaints.

A summary of the overall procedure to follow is provided on the following page in the form of a flow chart.

FPA


37B-4


08

4. FAULT FINDING PROCEDURE

Perform a pre-diagnostic on the system

Print the system fault finding log (available on CLIP

and in the MR or Technical Note)

Connect CLIP

noDialogue with

computer?

yes

Read faults

noFaults

present

yes

Deal with present faults

Deal with stored faults

noThe cause is still present

Fault solved

yes

Refer to ALP No. 1

Conformity check


Fault solved

Use fault finding charts (ALPs)


Fault solved

Contact Techline with the completed fault finding log

FPA


37B-5


08

4. FAULT FINDING PROCEDURE (continued)

Wiring check

Fault finding problemsDisconnecting the connectors and/or handling the wiring harness may temporarily remove the cause of a fault and create other faults.Electrical measurements of voltage, resistance and insulation are generally correct, especially if the fault is not present when the analysis is made (stored fault).

Visual inspectionLook for damage under the bonnet and in the passenger compartment.Carefully check the fuses, insulators and wiring harness routing.Look for signs of oxidation.

Tactile inspectionWhile manipulating the wiring harness, use the diagnostic tool to note any change in fault status from stored to present.Check that the connectors are properly locked.Apply light pressure to the connectors.Twist the wiring harness.If there is a change in status, try to locate the source of the fault.

Inspection of each componentDisconnect the connectors and check the appearance of the clips and tabs, as well as the crimping (no crimping on the insulating section).Make sure that the clips and tabs are properly locked in the holes.Check that no clips or tabs have been dislodged during connection.Check the clip contact pressure using an appropriate model of tab.

Continuity and insulation checkCheck the continuity of entire lines, then section by section.Look for a short circuit to earth, to + 12 V or to another wire.

If a fault is detected, repair or replace the wiring harness.

FPA


37B-6

FPA Vdiag No.: 0C, 04 and

08

5. FAULT FINDING LOG

You will always be asked for this log: when requesting technical assistance from the Techline, for approval requests when replacing parts for which approval is obligatory, to be enclosed when returning monitored parts on request. The log is needed for warranty reimbursement,

and enables better analysis of the parts removed.

6. SAFETY ADVICE

Safety rules must be observed during any work on a component to prevent any damage or injury:– make sure that the battery is properly charged to avoid damaging the computers with a low load,– use the appropriate tools.

IMPORTANT!

IMPORTANTAny fault on a complex system requires thorough fault finding with the appropriate tools. The FAULT FINDING LOG, which should be completed during the procedure, enables you to keep track of the procedure which is carried out. It is an essential document when consulting the manufacturer.

IT IS THEREFORE COMPULSORY TO COMPLETE A FAULT FINDING LOGEVERY TIME A FAULT FINDING PROCEDURE IS PERFORMED

FPA

List of monitored parts: Computer.

To be read with the Diagnostic tool (Identification screen):

FAULT FINDING LOGSystem: Electric Parking Brake

Page 1/2

Administrative identification

Date 2 0

Log completed by

VIN

Engine

Diagnostic tool CLIP

Revision

Customer complaint

1733 Natural application or release fault

1734 Automatic application fault 1735 Automatic release fault

1736 Emergency braking fault 1737 Erratic application fault 1738 No lighting of instrument panel warning light

Other Your comments:

Conditions under which the customer complaint occurs

004 Intermittently 011 When the ignition is switched on

009 Sudden fault

003 When stationary 999 When driving at less than 6 mph (10 km/h)

999 When driving at more than 6 mph (10 km/h)

Other Your comments:

Documentation used in fault finding

Fault finding procedure used

Type of diagnostic manual: MR Technical Note Assisted fault finding

Fault finding manual no:

Wiring diagram used

Wiring Diagram Technical Note No:

Other documentation

Title and/or part number:

Computer identification and parts exchanged for the system

Part 1 part no.

Part 2 part no.

Part 3 part no.

Part 4 part no.

Part 5 part no.

Computer part no.

Supplier no.

Program no.

Software version

Calibration no.

VDIAG

FD 27Fault finding log

page to print or photocopy - page to print or photocopy - page to print or photocopy

FAULT FINDING LOGSystem: Door locking

Page 2/2

Faults found with the diagnostic tool

Fault no. Present Stored Fault name Specification

Conditions under which fault occurs

Status or parameter no. Parameter name Value Unit

System-specific information

Description:

Additional information

What factors led you to replace the computer?What other parts were replaced?

Other defective functions?

Your comments:

Vehicle configuration before modification:

On MAIN screen:On AUTOMATIC APPLICATION screen:On AUTOMATIC RELEASE screen:

ET 024 System operation:ET 022 Automatic application configuration:ET 023 Automatic release configuration:

Customer mode With With

Factory mode None

None

Warning: Any change in configuration of the automatic application or release features, at the request of the customer, must be traced by this log. The repairer is, moreover, obliged to note this change in the maintenance booklet for the vehicle in question.

Vehicle configuration after modification:

On MAIN screen:On AUTOMATIC APPLICATION screen:On AUTOMATIC RELEASE screen:

ET 024 System operation:ET 022 Automatic application configuration:ET 023 Automatic release configuration:

Customer mode With With

Factory mode None

None

FD 27Fault finding log

page to print or photocopy - page to print or photocopy - page to print or photocopy

ASSISTED PARKING BRAKEFault finding - System operation 37B

37B-9


08 Fault finding - System operation

PRESENTATION OF THE PARKING BRAKE:

The assisted parking brake provides the following functions:– keeps the vehicle stationary when stopped (parking brake).– 'dynamic' emergency brake (if the main brakes fail).– automatic braking force adjustment according to the slope (adapted application),– assisted parking brake application when the engine is stopped (depending on configuration),– easy start with assisted parking brake release (depending on configuration),– manual application and release by pulling on the lever.

SYSTEM COMPONENTS AND OPERATION:

The system consists of the following components: A control lever with brake application indicator light.

– For applying and releasing the parking brake.

The control unit (computer) houses the electric motor, the brake cable hooks, slope sensor and force sensor.– The slope sensor controls locking according to the angle of the slope.– The force sensor checks and corrects the force applied to the brakes.

A clutch pedal position sensor to aid starting.– Informs the computer of the vehicle's clutch position (the position of the pedal enables the torque necessary for

vehicle movement to be obtained).

Two mechanical cables.– Convey the mechanical force to the rear brakes.

An emergency control via cable (in the central storage compartment on the LAGUNA, VEL SATIS and ESPACE and in the boot on the SCENIC).– Enables the rear brakes to be released in the event of the battery or parking brake failing.

The warning lights and symbol on the instrument panel.– Indicate application, releasing and any faults on the parking brake.

Note:The parking brake cable play compensation is performed automatically by the control unit.

FPA


37B-10


08

MANUAL OPERATION:– The parking brake is engaged by pulling on the control lever (normal braking immobilises the vehicle).

– Over-application can be obtained by pulling and holding the lever for 5 seconds (maximum application for steep hills or when the vehicle reaches the maximum permitted weight).

– When the parking brake is applied, the computer super-applies if the force applied to the rear brake callipers is insufficient (pads cooling) or if the computer detects slight vehicle movement. This detection is limited to 24 hours.

– The parking brake is released when the control lever is applied fully and the release switch is pressed.

ASSISTED OPERATION:

Restrictions on assisted brake release in automatic transmissions:Assisted release is not allowed in the following cases:

– Opening the driver's door followed by engagement of a gear (gear lever in position D).

– Engagement of a gear (gear lever in position D) followed by opening the driver's door.

Note:When the parking brake is applied, the red light on the instrument panel (brake pads) and indicator light on the lever are lit.Below 6 mph (10 km/h) pulling the lever locks the rear wheels. Above 6 mph (10 km/h) pulling the lever provides dynamic emergency braking without locking the rear wheels (regulatory deceleration of 1.5 m/s2).The assisted parking brake can only be released when the steering column is unlocked (forced + after ignition feed, see Introduction).

The assisted parking brake enables assisted application and release of the brake:

Application: When the engine is switched off, the parking brake is applied when the driver presses the start button.

Release: The brake is released when the torque necessary for vehicle movement is reached in the drive wheels (Note: for automatic transmissions, the driver's door must be closed).

Note: In this case, the instrument panel displays the message Lever in P or N and the buzzer on the instrument panel sounds.

Note: In this case, release is authorised for 5 seconds after the driver's door has been opened (e.g. for a manoeuvre). After 5 seconds release is prevented.

Note: Assisted braking and release only occurs if the computer has been configured.For details on how these configurations function, see Configuration and programming.

FPA


37B-11


08

GENERAL OPERATING MODE FOR THE COMPUTER:

The assisted parking brake computer operates in two modes: STANDBY mode and SWITCH ON mode.

SWITCH ON mode:

Available functions:– Manual application and release, assisted application and release and emergency braking (steering column

unlocked).– Full system fault finding (all faults can be identified).

Switch on conditions (3 possibilities):– The UCH sends a switch on request to the parking brake computer via the multiplex network as the vehicle is

opened or the card is inserted in the reader.– Braking request via the parking brake control lever.– Battery voltage greater than 13.2 V, if the vehicle is Parked for less than 24 hours.

STANDBY mode:

Available functions:– 24-hour monitoring of the braking force and incline (to ensure parking brake application).– Only application is authorised (using the lever).– Restricted system fault finding (the computer can no longer identify all faults).– Release not authorised.

Conditions for setting to standby:– The UCH sends a standby request to the parking brake computer via the multiplex network after the ignition is

switched off and the vehicle locked (a few seconds later). The parking brake computer's STANDBY mode will be confirmed by the lever warning light going out (special note: the battery voltage must be below 13.2 V).

CABLE RESETTING:

The parking brake cable is locked after the control lever is released or after driving at over 1 mph (2 km/h) (switch on mode).When the assisted parking brake system locks, it makes a sound that lasts for a few seconds and ends with clicking (play compensation is automatic).

IMPORTANTBefore using the emergency control, it is important to put the vehicle into gear and wedge one wheel if necessary (on a slope).

FPA


37B-12


08

WARNING LIGHT MANAGEMENT

Indications of a level 1 fault:– Check Parking Brake message on the instrument panel display.– orange indicator light (P in a triangle) on the instrument panel comes on.– Service warning light comes on.

Indications of a level 2 fault:– Parking brake fault message on the instrument panel display.– 1 second audible warning (from the instrument panel),– orange indicator light (P in a triangle) on the instrument panel comes on.– Service warning light comes on.– Red indicator light (brake pad light) on the instrument panel comes on.– parking brake control lever indicator light flashes.

Warning occurs:– when the door is opened and a gear is engaged on an automatic transmission,– when the vehicle is moving, despite the parking brake being applied,– when the door is opened, with the engine running and the parking brake released,– when the door is opened, with the engine stopped and the parking brake released,

Note:When the lever warning light stops flashing, the instrument panel message disappears. If the system has a level 2 fault, whenever the lever is used, the indicator light on the lever starts flashing again and the fault message reappears.

FPA

ASSISTED PARKING BRAKEFault finding - Allocation of computer tracks 37B

37B-13


08 Fault finding - Allocation of computer tracks

ALLOCATION OF COMPUTER TRACKS FOR THE ASSISTED PARKING BRAKE AND THE CONTROL LEVER

Track Description

A1 Not usedA2 Multiplex line LA3 Multiplex line HA4 Diagnostic line K

B1 Not usedB2 Not usedB3 Not usedB4 Not used

C1 Not usedC2 Dynamic brake switch signal (1st switch)C3 Dynamic brake switch signal (2nd switch)C4 Lever warning light lit

D1 Not usedD2 Dynamic brake switch supply (1st switch)D3 Static brake switch supply (2nd switch)D4 Not used

E1 Not usedE2 Clutch pedal sensor earthE3 Clutch pedal sensor signalE4 Clutch pedal sensor supply

F1 Not usedF2 Not usedF3 Not usedF4 Not used

G1 Not usedG2 Computer earth (MEGANE only)G3 Not usedG4 + battery feed (MEGANE only)

H1 Not usedH2 Computer earthH3 Not usedH4 + 12 V battery feed

Control lever

tracks 61227105

94

Clutch pedal sensor tracks

321

Note:The clutch pedal sensor is only fitted to vehicles with manual gearboxes.

+12V battery feed+12V side lightsEarth

FPA

ASSISTED PARKING BRAKEFault finding - Replacement of components 37B

37B-14


08 Fault finding - Replacement of components

A/ PROCEDURE FOR REPLACING AN ASSISTED PARKING BRAKE COMPUTER

The description of the mechanical operations for replacing the control unit (computer), and the brake cables, (see 37B, Assisted parking brake).

The parking brake cables must always be replaced when the computer is replaced. In the same way, the computer must be replaced when the parking brake cables are changed. Conversely, the lever and the parking brake are independent of one another. The lever must be replaced outside after ignition feed and with the parking brake released, if not faults may arise. The clutch sensor must be replaced in + after ignition feed to avoid a fault being provoked.

BEFORE REPLACING THE PARKING BRAKE COMPUTER:

If the vehicle has a manual gearbox, recover the clutch data from the memory of the old computer so that it can be entered into the new computer (see section C).

Operations to perform before replacement:– Switch on the ignition, connect the diagnostic tool and establish dialogue with the computer (parking brake field).– before replacing the computer, check that it is actually causing the fault by reading the faults and apply the fault

finding procedure concerned.

Steps to follow after replacement:– with the ignition switched off, replace the assisted parking brake computer (with the approval of Techline).– switch on the ignition, connect the diagnostic tool and establish dialogue with the computer (parking brake field),– apply the procedure described in section B: NEW COMPUTER CALIBRATION AND INITIALISATION,– release the parking brake lever to reset the cables.– check parking brake operation by testing the braking, maximum braking, and release,– read the faults to clear any stored faults and check that replacing the computer has enabled the fault on the

vehicle to be rectified (no faults present).– read the configuration (repair mode menu) to check that the parking brake computer configuration has been

correctly configured.– depending on the configuration chosen, check the assisted braking and release.

Note:An assisted parking brake computer may be replaced only when requested by the Techline (fill out the fault finding log).

Note:With an automatic transmission, no data recovery is required (the computer can be replaced without applying sections C and D).

IMPORTANTDo not clear the faults from the computer before replacing it.

IMPORTANTIt is strictly prohibited to drive a vehicle with an assisted parking brake computer unless it is in customer mode.

FPA


37B-15


08

B/ NEW COMPUTER INITIALISATION

1 / ENTERING THE VIN CODE– run command VP004 Enter VIN,– using the diagnostic tool keypad, enter the vehicle identification number.– confirm.

2. COMPUTER CALIBRATION AND INITIALISATION.

– In + after ignition feed, run command VP011 Computer calibration and initialisation and carry out the following 4 steps.

STEP 1 VEHICLE MASS CALIBRATION

Screen 1:With the drop-down menu, enter the following information:

– vehicle type,– engine type,– gearbox type,– type of driving style,– equipment level (for Vdiag 04),– confirm by pressing Next.

Screen 2:– reread the highlighted information.– If the highlighted information does not match the vehicle, return to the selection screen by pressing

the Back button.– if the highlighted information is correct, continue with step 2 by pressing Next.

STAGE 2 INITIALISING A NEW PARKING BRAKE– Initialise the brake by pressing YES (you should hear it engage and then disengage).– Proceed to Step 3 by pressing Next.

STEP 3 SLOPE INITIALISATION– Calibrate the slope sensor by pressing Confirm. Proceed to step 4 by pressing Next.

STEP 4 INITIALISING ASSISTED BRAKING– Initialise braking by pressing Confirm.– Return to the selection list screen by pressing Finish.

3 / COMPUTER CONFIGURATIONS– Carry out the configurations as requested by the customer (see Configuration and programming).

Note:If the VIN code is not entered, stage 2 of the computer initialising procedure will not work.

IMPORTANTTo initialise the computer, the vehicle must be on a horizontal surface with the brake cables correctly fitted (connected to the rear brake callipers) and nobody must be working on the vehicle.

FPA


37B-16


08

C/ CLUTCH DATA BACKUP (for vehicles fitted with a manual gearbox)

Purpose of the procedure:

The data saved relates to the clutch engagement point. This is important when the clutch wears, because this data enables the assisted release of the parking brake when the clutch causes the vehicle to move off.

If this data cannot be recovered from the old computer (impossible to establish dialogue with the diagnostic tool) or a new clutch has been installed, the new computer has to be programmed with the clutch engagement point: drive the vehicle, downshifting at least 30 times (from 5th to 4th gear) before returning the vehicle to the customer.

If the clutch data is not recorded in the new computer, the operation of the assisted brake on steep slopes will be impaired when first used.

Perform the following operations:

– establish dialogue with the computer,– select the repair mode menu on the diagnostic tool.– open the programming menu,– run function SC005 Backup clutch pedal programming (the data is written to a file that is automatically selected

when the new computer is programmed).– replace the assisted parking brake computer (see 37B, Assisted parking brake),– follow the procedures described in sections A and B.

D/ ENTER CLUTCH DATA (for vehicles with automatic transmissions)

The initialising must be performed (sections A and B).Perform the following operations:

– establish dialogue with the computer,– select the repair mode menu on the diagnostic tool.– open the programming menu,– run function: SC006 Enter clutch pedal programming.– check that the assisted parking brake is operating correctly, including the assisted release function.

IMPORTANTDo not apply this procedure in the event of a clutch fault.

Note:– If the vehicle has an automatic transmission, command SC005 Backup clutch pedal programming is

unavailable.– Command SC006 Enter clutch pedal programming, is also unavailable if command SC005 has not already

been activated.

FPA

ASSISTED PARKING BRAKEFault finding - Configuration and programming 37B

37B-17


08 Fault finding - Configuration and programming

CONFIGURATIONS:

Two functions can be turned off by configuration: assisted application and release.

Special note:Assisted application and release are configured by default when a new computer is initialised. This configuration is accessible in the log book.

For configuration, select the diagnostic tool's Repair mode menu.

CF007 Vehicle configuration

This configuration turns assisted parking brake application on or off when the engine is stopped.In cold countries or regions, assisted braking should preferably be inhibited to avoid brake cables becoming frozen in the applied position.

– Select the type of configuration:– NORMAL (with assisted braking when the engine is stopped).– COLD CLIMATE (without assisted braking when the engine is stopped).

– Confirm the operation.– Make sure the configuration has been properly entered by reading configuration LC009 Vehicle configuration.– Make sure the assisted braking function works.

PROGRAMMING:– Refer to the configuration check.

Note:When a new computer is installed, the slope sensor is calibrated by running command VP011 Computer calibration and initialisation.

FPA

ASSISTED PARKING BRAKEFault finding - Fault summary table 37B

37B-18


08 Fault finding - Fault summary table

Tool fault Associated DTC Diagnostic tool title

DF003 50C3 Computer

DF004 50CA Computer

DF006 50C5 Computer configuration

DF015 5166 Clutch position sensor circuit

DF016 50CB Warning light circuit

DF025 5168 Vehicle movement with maximum application

DF028 517E Computer

DF029 517B Computer

DF035 5170 Undervoltage

DF036 5180 No injection multiplex signal

DF037 5181 No ABS multiplex signal

DF038 5188 No automatic transmission multiplex signal

DF039 5183 No UCH multiplex signal

DF041 5160 Slope sensor (internal)

DF042 5161 Force sensor (internal)

DF043 5162 Parking brake motor

DF044 516C Brake switch

DF045 5172 Redundant brake switch

DF046 516F Brake motor/cables connection

DF047 5171 Manual control

DF048 5173 Release switch

DF049 5175 Braking

DF050 5178 Manual lock (internal)

DF051 5176 System fault after computer replacement

DF052 516D Multiplex network

DF054 50C1 Battery voltage too high

DF055 50C0 Battery undervoltage

DF056 5163 Brake cables incorrectly fitted

DF057 517A Computer internal temperature sensor

DF058 5177 Parking brake motor current (internal)

DF059 5194 No Protection and Switching Unit multiplex signal

DF061 5174 Unidentified electrical fault (internal)

FPA

ASSISTED PARKING BRAKEFault finding - Interpretation of faults 37B

37B-19


08 Fault finding - Interpretation of faults

DF003PRESENT

ORSTORED

COMPUTER1.DEF: Internal electronic fault2.DEF: Internal electrical fault3.DEF: Loss of computer supply voltage

NOTES

Priorities when dealing with a number of faults:This fault must be dealt with first.

Special notes:Before replacing an assisted parking brake computer, save the data from the old computer (for vehicles fitted with a manual gearbox).For this operation, see Replacement of components.

1.DEF2.DEF

NOTES None.

If the fault is present or stored: contact the Techline.

3.DEF NOTES

Special notes:The fault does not usually come from the assisted parking brake computer.This fault indicates that the computer has detected several losses of feed (micro-breaks).Note:This fault may be caused by several battery disconnections or a vehicle power supply fault.Only for Vdiag 08 and 0C:If there is a stored fault, refer to the statuses and parameters when it appears.Explanation of counters: see Introduction.If the fault is stored and PR018 = 0 and PR022 > 25, then clear the fault:do not take this fault into account.

Conditions for applying fault finding procedures to stored faults:Apply this fault finding procedure if the fault reappears as present or stored after a fault has been cleared and forced + after ignition feed has been switched off and on again (see Introduction).

AFTER REPAIR

If the computer has been replaced (at the request of the Techline), initialise the assisted parking brake computer (see Replacement of components).Issue several braking and release commands to confirm the repair.Deal with any other faults.

FPA_V0C_DF003/FPA_V04_DF003/FPA_V08_DF003 FPA


37B-20


08

DF003

CONTINUED

Disconnect the assisted parking brake computer connector (under the body near the rear axle) to check the conformity of the power supply (this must equal the voltage measured at the ± 0.5 V battery terminals).Check the insulation, continuity and the absence of interference resistance on the following connections:

Assisted parking brake computer connector

track H4

track G4 + AVC

track H2

track G2 earth

Note:If the electrical supply is correct, check that the supply has not been cut off by moving the electrical harness (near to the intermediate connector under the front left-hand seat at the computer connector).Repair if necessary (see the vehicle wiring diagram).

If the fault is still present, contact the Techline.

AFTER REPAIR


FPA


37B-21


08

DF004PRESENT

ORSTORED

COMPUTER1.DEF: Internal electronic fault

NOTES


Special notes:Before replacing an assisted parking brake computer, save the data from the old computer (for vehicles fitted with a manual gearbox).For this operation, see Replacement of components.

Contact the Techline without clearing the faults.

AFTER REPAIR




37B-22


08

DF006

PRESENT

COMPUTER CONFIGURATION1.DEF : Configuration absent or incorrect

NOTES

Special notes:Deal with this fault only after the computer has been replaced.If it appears when the assisted parking brake computer is not new, contact the Techline.This fault indicates that the parking brake control unit has not been calibrated or has been calibrated incorrectly.This fault causes the assisted parking brake to operate incorrectly, in particular for the assisted release function.

Display status ET024 System operation on the main screen of the diagnostic tool.This status should be CUSTOMER MODE. If it is FACTORY MODE, initialise the computer by running command VP011 Computer calibration and initialisation (see Replacement of components).

Test that the parking brake is operating correctly by applying it fully (handle pulled right up for 5 seconds) and releasing it.

Check the conformity of parameter PR003 Incline value.Calibrate the sensor if necessary (SC008 Slope initialisation).

If necessary, reconfigure the application and release functions as requested by the customer with CF007 Vehicle configuration and CF011 Automatic release (see Configuration and programming).

If the above procedure does not resolve the fault (fault still present), recalibrate the computer (command VP011 Computer calibration and initialisation on the diagnostic tool).During this stage, check that the vehicle criteria are correctly entered (screen 2 stage 1).

If the fault is still present, contact the Techline without clearing the faults.

AFTER REPAIR


FPA_V0C_DF006P/FPA_V04_DF006P/FPA_V08_DF006P FPA


37B-23


08

DF015PRESENT

ORSTORED

CLUTCH POSITION SENSOR CIRCUITCC.0 : Short circuit to earthCC.1 : Short circuit to + 12 V1.DEF: Signal outside upper limit2.DEF: Signal outside lower limit3.DEF: Sensor supply fault4.DEF: Signal incoherence (→ inconsistency sensors - units)

NOTES

Priorities when dealing with a number of faults:Deal with faults DF035 Undervoltage, DF055 Battery undervoltage and DF054 Battery voltage too high first, if they are present or stored.

Special notes:The fault does not usually come from the assisted parking brake computer.The fault should only be displayed on a vehicle fitted with a manual gearbox. If it is displayed on an automatic transmission, check the configurations.The sensor should be replaced in + after ignition feed, if not this fault may occur.If the fault appeared following replacement of the clutch position sensor, check the procedure and repeat it in + after ignition feed if necessary, after clearing the fault.If the fault cannot be cleared, disconnect the clutch sensor under + after ignition feed, then reconnect it.Only for Vdiag 08 and 0C:If there is a stored fault, refer to the statuses and parameters when it appears.Explanation of counters: see Introduction.If the fault is stored and PR018 = 0 and PR022 > 25, clear the fault: do not take this fault into account.

Conditions for applying fault finding procedures to stored faults:The fault appears after:For CC.0, CC.1 and 3.DEF: Switch on the ignition (forced + after ignition feed: see Introduction) and depress the clutch pedal.For 1.DEF and 2.DEF: Engine idling, and a gear engaged for 5 seconds.

Check the connection and condition of the clutch pedal position sensor connector.Repair if necessary.

Check that the clutch pedal position sensor is fitted correctly: The potentiometer arm must be properly inserted into (and neither above nor below) its mounting lug.

Using the diagnostic tool, display parameter PR006 Clutch pedal position on the main data screen (see the conformity check values).

AFTER REPAIR




37B-24


08

DF015

CONTINUED

With the clutch pedal position sensor connector disconnected, check the insulation, continuity and the absence of interference resistance on the following connections:

Clutch pedal position sensor connector: 1057 Assisted parking brake computer connector: 1217

Track 1 Track E4

Track 2 Track E3

Track 3 Track E2

Repair if necessary.

Disconnect the clutch pedal position sensor connector and check, with the ignition switched on and the assisted parking brake computer connector connected, the presence of a 5 volt supply, by measuring across tracks 1 and 3 of the sensor (+ 5 volts on track 1 and earth on track 3).If the 5 V supply is not present and the connections previously checked are correct, contact the Techline.

With the clutch pedal position sensor connector disconnected, measure the sensor resistance between tracks 1 and 3 of the sensor.Replace the sensor if its resistance is not 5200 ΩΩΩΩ ±±±± 520 ΩΩΩΩ.

Check the operation of statuses ET016 Manual gearbox gear lever position and ET017 Reverse gear engaged.If not correct, check the operation of the gearbox sensor.


AFTER REPAIR


FPA


37B-25


08

DF016PRESENT

ORSTORED

WARNING LIGHT CIRCUITCC.0 : Short circuit to earthCC.1 : Short circuit to + 12 V

NOTES

Priorities when dealing with a number of faults:Deal with faults DF035 Undervoltage, DF055 Battery undervoltage and DF054 Battery voltage too high first, if they are present or stored.

Conditions for applying fault finding procedures to stored faults:The fault is declared present after the forced + after ignition is switched on (see Introduction) and an application request using the control lever.

Special notes:The fault does not usually come from the assisted parking brake computer.Note:After a release request, the fault becomes stored.Replacing the lever with the parking brake applied may cause this fault. If this fault appears after replacing the lever, release the parking brake and carry out the procedure again.Only for Vdiag 08 and 0C:If there is a stored fault, refer to the statuses and parameters when it appears.Explanation of counters: see Introduction section.If the fault is stored and PR018 = 0 and PR022 > 25, clear the fault: do not take this fault into account.If the fault is stored and PR019 < 3, clear the fault: do not take this fault into account.

Check that the assisted parking brake control lever connector is in good condition and also check its clips (terminals).Repair if necessary.

Check that there is a 12 V + before ignition supply on track 6 of the assisted parking brake control lever: see wiring diagram.Repair if necessary.

AFTER REPAIR




37B-26


08

DF016 CONTINUED

Disconnect the assisted parking brake control lever sensor connector to check the insulation, continuity and the absence of interference resistance on the following connection:

Assisted parking brakecontrol lever connector: 1216

Assisted parking brake computer connector: 1217

Track 5 Track C4


If the fault is still present, replace the parking brake control lever (the indicator light cannot be separated).


AFTER REPAIR




37B-27


08

DF025PRESENT

OR STORED

VEHICLE MOVEMENT WITH MAXIMUM APPLICATION

1.DEF: The computer has detected vehicle movement when parked (parking brake applied)

NOTES

Priorities when dealing with a number of faults:First deal with faults DF046 Brake motor/cables connection, DF042 Force sensor, DF035 Undervoltage, DF041 Slope sensor, DF049 Braking, DF054 Battery voltage too high and DF055 Battery undervoltage, if present or stored.If none of these faults is present or stored, the parking brake computer is not normally the cause.

Conditions for applying fault finding procedures to stored faults:Apply the fault finding procedure even if the fault is stored.Note:The fault does not remain present after it has been detected.

Special notes:– this fault indicates that the assisted parking brake computer detected movement of

the vehicle whilst the parking brake was applied.– if this fault is present, with the ignition on, the buzzer on the instrument panel is

activated (when the vehicle is moving with the parking brake applied).This fault is an operational warning. Check the context in which it appears.It may appear during:– an application request, whilst the vehicle is still being driven,– forced assisted release when starting, when the starting conditions have not

been met,– an attempt to park on a steep slope, with low traction.Only for Vdiag 08 and 0C:If there is a stored fault, refer to the statuses and parameters when it appears.Explanation of counters: see Introduction section.If the fault is stored and PR018 = 0 and PR022 > 25, clear the fault: do not take this fault into account.

AFTER REPAIR




37B-28


08

DF025

CONTINUED

Using the diagnostic tool, display the wheel speed parameters on the parameters screen.When stationary, these parameters must show 0 mph. If this is not the case, carry out fault finding on the anti-lock braking system.

Check that the parking brake mechanical tensioning line is correct:– Parking brake cables correctly fitted.– Good condition of the parking brake cables (no seizing or deterioration).– Conformity, condition and proper functioning of the rear brake callipers.– Condition and conformity of the rear brake pads.

Carry out the necessary repairs.

Check that the vehicle is not overloaded.

Check that the vehicle tyres are not worn.


AFTER REPAIR


FPA


37B-29


08

DF028PRESENT

ORSTORED

COMPUTER1.DEF: Internal electronic fault2.DEF: Internal electrical fault

NOTES


Conditions for applying fault finding procedures to stored faults:Apply the fault finding procedure even if the fault is stored.

Special notes:Before replacing an assisted parking brake computer, save the data from the old computer (for vehicles fitted with a manual gearbox). For this operation, see Replacement of components.

Contact the Techline, without clearing the fault.

AFTER REPAIR




FPA Vdiag No.: 08

DF029PRESENT

OR STORED

COMPUTER1.DEF: Internal electronic fault2.DEF: Internal electronic fault

NOTES



Special notes:Before replacing an assisted parking brake computer, save the data from the old computer (for vehicles fitted with a manual gearbox). For this operation, see Replacement of components.


AFTER REPAIR


FPA_V08_DF029 FPA

37B-30


37B-31


08

DF035PRESENT

OR STORED

UNDERVOLTAGE1.DEF: Insufficient feed voltage during the command

NOTES

Priorities when dealing with a number of faults:Deal with fault DF055 Battery undervoltage first if it is present or stored.

Conditions for applying fault finding procedures to stored faults:Apply this fault finding procedure if the fault after the ignition has been switched off and on again (+ forced after ignition feed: see Introduction), and an application or release request from the control lever.

Special notes:This fault is a power supply fault and does not usually stem from the assisted parking brake computer.This fault does not indicate computer feed undervoltage but a significant drop in voltage to the parking brake motor while the command is being issued.Only for Vdiag 08 and 0C:If there is a stored fault, refer to the statuses and parameters when it appears.Explanation of counters: see Introduction.If the fault is stored and PR018 = 0 and PR022 > 25, clear the fault:do not take this fault into account.

Disconnect the assisted parking brake computer connector to check the conformity of the power supplies and to check the insulation, continuity and the absence of interference resistance on the following connections:

Assisted parking brake computer connector

track H4

track G4 + AVC

track H2

track G2 earth

Repair if necessary (see the vehicle wiring diagram).

Apply the brake and then release it (engine running) to check that during the command the voltage measured at the fuse does not drop below 10.5 V.Make the repairs necessary for the parking brake computer electrical supply to be correct (equal to the battery voltage).


AFTER REPAIR




37B-32


08

DF036PRESENT

OR STORED

NO INJECTION MULTIPLEX SIGNAL1.DEF: No multiplex frames or invalid values (fault on computer transmitting signal

or multiplex line connection)

NOTES

Priorities when dealing with a number of faults:Deal with faults DF055 Battery undervoltage and DF052 Multiplex network first if they are present or stored.

Deal with any injection computer faults first.The fault does not usually come from the assisted parking brake computer.Note:If a multiplex line fault such as this is present, the parking brake may lose all or some of its assisted parking capabilities.

Conditions for applying fault finding procedures to stored faults:Apply this fault finding procedure if the fault reappears as present or stored after a fault has been cleared, and the ignition has been switched off and on again (forced + after ignition feed: see Introduction).

Special notes:This fault only relates to multiplex signals received from the injection computer.This fault indicates either that there is no transmission, or that the signals received by the parking brake are inconsistent.Only for Vdiag 08 and 0C:If there is a stored fault, refer to the statuses and parameters when it appears.Explanation of counters: see Introduction section.If the fault is stored and PR018 = 0 and PR022 > 25, clear the fault:do not take this fault into account.If the fault is stored and PR019 < 10, clear the fault:do not take this fault into account.

AFTER REPAIR




37B-33


08

DF036

CONTINUED

Using the diagnostic tool, run fault finding on the multiplex network and particularly on the injection computer-assisted parking brake computer segment.This check ensures that the various multiplex system connections are correct and finds any faulty segments.Carry out any necessary repairs.

If the multiplex network test did not find the faulty connection, carry out a conformity check to check that the statuses and parameters coming from the injection computer are present and correct (ET019, PR015, PR017).If the status and parameters shown here are not correct, carry out fault finding on the injection.

If the fault is still present, disconnect the injection computer connector to check that it is good condition as well as its clips (terminals), in particular the clips for the multiplex tracks (refer to the wiring diagram for the injection system fitted to the vehicle).Replace the clips if necessary.


AFTER REPAIR


FPA


37B-34


08

DF037PRESENT

ORSTORED

NO ABS MULTIPLEX SIGNAL1.DEF: No multiplex frames or invalid values (fault on computer transmitting

multiplex connection signal or fault)

NOTES


Deal with any ABS computer faults first.The fault does not usually come from the assisted parking brake computer.Note:If this fault is present, the parking brake may lose all or some of its assisted parking capabilities.

Conditions for applying fault finding procedures to stored faults:Apply this fault finding procedure if the fault reappears as present or stored after a fault has been cleared and the ignition has been switched off and on again (forced + after ignition feed: see Introduction).

Special notes:This fault only relates to multiplex signals received from the ABS computer.This fault indicates either that there is no transmission, or that the signals received by the assisted parking brake computer are inconsistent.

Only for Vdiag 08 and 0C:If there is a stored fault, refer to the statuses and parameters when it appears.Explanation of counters: see Introduction.If the fault is stored and PR018 = 0 and PR022 > 25, clear the fault:do not take this fault into account.If the fault is stored and PR019 < 10, clear the fault:do not take this fault into account.

AFTER REPAIR




37B-35


08

DF037

CONTINUED

Using the diagnostic tool, run fault finding on the multiplex system and particularly on the ABS computer-parking brake control unit segment.This check ensures that the various multiplex system connections are correct and finds any faulty segments.Carry out any necessary repairs.

If the multiplex system test did not find the faulty connection, carry out a conformity check to check that the parameters coming from the ABS computer are present and correct (PR012, PR013, PR014).If the parameters specified are not correct, carry out fault finding on the anti-lock braking system

If the fault is still present, disconnect the computer connector to check that it is in good condition as well as its clips (terminals), in particular the clips for the multiplex tracks (refer to the wiring diagram for the ABS computer fitted to the vehicle).Replace the clips if necessary.


AFTER REPAIR


FPA


37B-36


08

DF038 PRESENT

OR STORED

NO AUTOMATIC TRANSMISSION MULTIPLEX SIGNAL.1.DEF: No multiplex frames or invalid values (fault on computer transmitting

multiplex connection signal or fault).

NOTES


Deal with any automatic transmission computer faults first.The fault does not usually come from the assisted parking brake computer.Note:If this fault is present, the parking brake may lose all or some of its assisted parking capabilities.

Conditions for applying fault finding procedures to stored faults:Apply this fault finding procedure if the fault reappears as present or stored after a fault has been cleared, and the ignition has been switched off and on again (forced + after ignition feed: see Introduction).

Special notes:This fault only relates to multiplex signals received from the automatic transmission computer.This fault indicates either that there is no signal or that the signals transmitted are inconsistent.Only for Vdiag 08 and 0C:If there is a stored fault, refer to the statuses and parameters when it appears.Explanation of counters: see Introduction.If the fault is stored and PR018 = 0 and PR022 > 25, clear the fault:do not take this fault into account.If the fault is stored and PR019 < 10, clear the fault:do not take this fault into account.

AFTER REPAIR




37B-37


08

DF038

CONTINUED

Check the vehicle gearbox configuration: check that the configuration is not for a manual gearbox when the vehicle is fitted with an automatic transmission, or that it is not configured for an automatic transmission when the vehicle is manual.Using the diagnostic tool, run fault finding on the multiplex system and particularly on the automatic transmission computer-parking brake control unit segment.This check ensures that the various multiplex system connections are correct and finds any faulty segments.Carry out any necessary repairs.

If the multiplex system test did not find the faulty connection, carry out a conformity check to check that the status coming from the automatic transmission computer is present and correct (ET018).If status ET018 is not correct, carry out fault finding on the automatic transmission.

If the fault is still present, disconnect the automatic transmission connector to check that it is in good condition, along with its clips (terminals), especially the clips for the multiplex tracks (refer to the wiring diagram for the automatic transmission computer fitted to the vehicle).Replace the clips if necessary.


AFTER REPAIR


FPA


37B-38


08

DF039 PRESENT

OR STORED

NO UCH MULTIPLEX SIGNAL1.DEF: No multiplex frames or invalid values (fault on computer transmitting

multiplex connection signal or fault).

NOTES


Deal with any UCH computer faults first.The fault does not usually come from the assisted parking brake computer.Note:If this fault is present, the parking brake may lose all or some of its assisted parking capabilities.

Conditions for applying fault finding procedures to stored faults:Apply this fault finding procedure if the fault reappears as present or stored after a fault has been cleared and the ignition has been switched off and on again (forced + after ignition feed: see Introduction).

Special notes:This fault only relates to multiplex signals received from the UCH computer.This fault indicates either that there is no signal or that the signals transmitted are inconsistent.Only for Vdiag 08 and 0C:If there is a stored fault, refer to the statuses and parameters when it appears.Explanation of counters: see Introduction.If the fault is stored and PR018 = 0 and PR022 > 25, clear the fault:do not take this fault into account.If the fault is stored and PR019 < 10, clear the fault:do not take this fault into account.

AFTER REPAIR




37B-39


08

DF039

CONTINUED

Using the diagnostic tool, run fault finding on the multiplex system and particularly on the UCH computer-parking brake control unit segment.This check ensures that the various multiplex system connections are correct and finds any faulty segments.Carry out any necessary repairs.

If the multiplex network test did not find the faulty connection, carry out a conformity check to check that the statuses coming from the UCH are present and correct (ET001, ET014, ET016, ET017, PR001).If the statuses and parameters specified are not correct, carry out fault finding on the UCH.

If the fault is still present, disconnect the connectors to ensure that the UCH connectors are in good condition as well as their clips (terminals), in particular the clips for the multiplex tracks (refer to the wiring diagram for the UCH fitted to the vehicle).Replace the clips if necessary.


AFTER REPAIR


FPA


37B-40


08

DF041PRESENT

ORSTORED

SLOPE SENSOR1.DEF: Signal incoherence

NOTES


Special notes:The slope sensor is internal to the assisted parking brake computer, it cannot be separated.Before replacing an assisted parking brake computer, save the data from the old computer (for vehicles fitted with a manual gearbox).For this operation, (see Replacement of components).


AFTER REPAIR




37B-41


08

DF042PRESENT

ORSTORED

FORCE SENSORCC.0 : Short circuit to earthCC.1 : Short circuit to + 12 V1DEF : Sensor supply fault

CC.11.DEF

NOTES


Special notes:The force sensor is internal to the assisted parking brake computer; it cannot be separated.Before replacing an assisted parking brake computer, save the data from the old computer (for vehicles fitted with a manual gearbox).For this operation, (see Replacement of components).


CC.0 NOTES


Special notes:The force sensor is internal to the assisted parking brake computer; it cannot be separated.Before replacing a parking brake control unit, save the data from the old computer (for vehicles fitted with a manual gearbox).For this operation, (see Replacement of components).


AFTER REPAIR




37B-42


08

DF043PRESENT

ORSTORED

PARKING BRAKE MOTOR1.DEF: Unidentified electrical fault

NOTES


Special notes:Before replacing an assisted parking brake computer, save the data from the old computer (for vehicles fitted with a manual gearbox).For this operation, (see Replacement of components).


AFTER REPAIR




37B-43


08

DF044PRESENT

ORSTORED

BRAKING SWITCHCC.0 : Short circuit to earthCC.1 : Short circuit to + 12 V

NOTES

Priorities when dealing with a number of faults:Deal with faults DF047 Manual control, DF035 Undervoltage, DF055 Battery undervoltage and DF054 Battery voltage too high first, if they are present or stored.

Conditions for applying fault finding procedures to stored faults:The fault is declared present after the ignition is switched on (forced + after ignition feed, see Introduction) and an application request using the control lever.

The fault does not usually come from the assisted parking brake computer.Special notes:The braking switch corresponds to the first contact of the lever (the lever travels approximately 3 mm).This fault appears naturally when the lever is disconnected.Note:The fault warning light comes on 10 seconds after the fault occurs.Only for Vdiag 08 and 0C:If there is a stored fault, refer to the statuses and parameters when it appears.Explanation of counters: see Introduction.If the fault is stored and PR018 = 0 and PR022 > 25, clear the fault: do not take this fault into account.If the fault is stored and PR019 < 3, clear the fault: do not take this fault into account.

AFTER REPAIR




37B-44


08

DF044

CONTINUED 1

Using the diagnostic tool (PARKING sub-function), check the operation of the parking brake control lever. With the ignition switched on, statuses ET008, ET009 and ET010 should operate as follows:

ET008 Application switch position.

ET009 Redundant application switch

position.

ET010 Release switch position.

Lever in rest position INACTIVE INACTIVE RELEASED

Lever applied slightly (3 mm travel)

ACTIVE INACTIVE RELEASED

Lever applied fully ACTIVE ACTIVE RELEASED

Lever applied and release switch pressed

ACTIVE ACTIVE PRESSED

If the statuses do not operate as explained above, check the connection and condition of the parking brake control lever connector.Repair if necessary.

Check the condition and connection of the parking brake computer connectors and their clips (terminals).Repair if necessary.

AFTER REPAIR


FPA


37B-45


08

DF044

CONTINUED 2

With the parking brake control lever connector disconnected, check the insulation, continuity and absence of interference resistance on the following connections:

Parking brake leverconnector: 1216

Assisted parking brake computer: 1217

track 9 track D2

track 7 track C2


With the parking brake control lever connector disconnected, switch on the ignition and check for a 5 V supply (4 V < X < 5 V) on track 7 of the lever connector. If the power supply is not present and the parking brake computer is correctly supplied (no other faults detected by the diagnostic tool), then contact the Techline.

If the fault is still present, measure the resistance of the braking switch between tracks 7 and 9 of the parking brake control lever.Replace the lever if the resistance of the brake switch is not approximately:– Lever in rest position: 2700 ΩΩΩΩ ±±±± 100ΩΩΩΩ– Lever applied: 172 ΩΩΩΩ ±±±± 15ΩΩΩΩ.


AFTER REPAIR


FPA


37B-46


08

DF045 PRESENT

OR STORED

REDUNDANT BRAKE SWITCH1.DEF: Signal incoherence

NOTES

Priorities when dealing with a number of faults:Apply the procedure for dealing with faults DF047 Manual control, DF035 Undervoltage and DF055 Battery undervoltage first, if they are present or stored.

Conditions for applying fault finding procedures to stored faults:This fault must be dealt with first.

Special notes:The fault does not usually come from the assisted parking brake computer.The redundant brake switch is the second contact of the lever (maximum lever travel).Only for Vdiag 08 and 0C:If there is a stored fault, refer to the statuses and parameters when it appears.Explanation of counters: see Introduction.If the fault is stored and PR018 = 0 and PR022 > 25, clear the fault: do not take this fault into account.If the fault is stored and PR019 < 3, clear the fault: do not take this fault into account.

AFTER REPAIR




37B-47


08

DF045

CONTINUED 1




position.









AFTER REPAIR


FPA


37B-48


08

DF045

CONTINUED 2

With the parking brake control lever connector disconnected, check the insulation, continuity and absence of interference resistance on the following connection:



track 10 track C3


With the parking brake control lever connector disconnected, check the presence of earth on track 2 of the lever connector.Repair if necessary.

If the fault is still present, check the redundant brake switch:Lever in rest position: insulation between tracks 2 and 10 of the lever.Lever fully applied: continuity between tracks 2 and 10 of the lever.Replace the parking brake control lever if it does not operate as specified.


AFTER REPAIR


FPA


37B-49


08

DF046PRESENT

ORSTORED

BRAKE MOTOR/CABLES CONNECTION (EMERGENCY UNLOCKING) 1.DEF: Parking brake unlocked by the emergency handle

NOTES

Priorities when dealing with a number of faults:Deal with faults DF003, DF004, DF028, DF029, DF035, DF041, DF042, DF043, DF050, DF054, DF055, DF057, DF058, DF061 if they are present or stored.

Conditions for applying fault finding procedures to stored faults:Apply this fault finding procedure if the fault recurs following clearance of the fault, with the ignition switched off and on again (forced + after ignition feed, see Introduction), and the parking brake released then applied by the control lever.

Special notes:The fault does not usually come from the assisted parking brake computer.This fault indicates that the assisted parking brake system has been unlocked by the manual control (if this is the case, check that the handle protector has not been damaged).Check that the emergency unlocking handle has not been manually pulled by the user, which would provoke this fault.The cables are reset by the parking brake release manual command or automatically (if the fault is present) when the vehicle is driven at more than 1 mph (2 km/h) (the fault is then stored).

Only for Vdiag 08 and 0C:If there is a stored fault, refer to the statuses and parameters when it appears.Explanation of counters: see Introduction.If the fault is stored and PR018 = 0 and PR022 > 25, clear the fault: do not take this fault into account.If there has been no manual use of the emergency unlocking handle and if PR019 > 5, contact the Techline.

AFTER REPAIR




37B-50


08

DF046

CONTINUED

Check that the fault was not provoked by manual usage of the emergency unlocking handle. In this case, it is normal for the fault to arise; clear the fault.

Carry out a releasing command, then a braking command with the control lever to reset the cables of the parking brake.

Check the conformity of the parking brake mechanical tensioning line: correctly attached, no breakage.Check the conformity of the emergency unlocking cable.Carry out the necessary repairs.

Check that the braking force and maximum braking are operating correctly.


AFTER REPAIR


FPA


37B-51


08

DF047PRESENT

ORSTORED

MANUAL CONTROL1.DEF: No signal2.DEF: Signal incoherence3.DEF: Short circuit4.DEF: Lever fault

NOTES

Priorities when dealing with a number of faults:Deal with faults: DF035 Undervoltage, DF055 Battery undervoltage and DF054 Battery voltage too high first, if they are present or stored.

Note:The fault does not usually come from the assisted parking brake computer.The fault is only stored after the brakes have been applied 3 times with the control level.

Conditions for applying fault finding procedures to stored faults:Deal with the fault as if it were present.

Only for Vdiag 08 and 0C:If there is a stored fault, refer to the statuses and parameters when it appears.Explanation of counters: see Introduction.If the fault is stored and PR018 = 0 and PR022 > 25, clear the fault: do not take this fault into account.If the fault is stored and PR019 < 3, clear the fault: do not take this fault into account.

AFTER REPAIR




37B-52


08

DF047

CONTINUED 1




position.









With the parking brake control lever connector disconnected, check the presence of earth on track 2 of thelever connector (repair if necessary).Also check for a 5 V supply (4 V < X < 5 V) on track 7 of the lever connector.If the power supply is not present and the parking brake computer is correctly supplied (no other faults detected by the diagnostic tool), then contact the Techline.

Check the condition and connection of the assisted parking brake computer connectors and their clips (terminals).Repair if necessary.

AFTER REPAIR


FPA


37B-53


08

DF047

CONTINUED 2

With the parking brake control lever connector disconnected, check the insulation (from earth and + 12 V and the insulation of the 4 wires from each other), the continuity and absence of interference resistance on the following connections:



track 9 track D2

track 7 track C2

track 10 track C3

track 4 track D3

Repair if necessary

With the parking brake control unit connector disconnected, check the insulation between tracks C2 and D2 of the computer. If the tracks are in short circuit, replace the lever, (see Replacement of components, Section A/ Procedure for replacing an assisted parking brake computer).


AFTER REPAIR


FPA


37B-54


08

DF048PRESENT

ORSTORED

RELEASE SWITCH1.DEF: Signal incoherence

NOTES

Priorities when dealing with a number of faults:Deal with faults DF003, DF004, DF028, DF029, DF035, DF041, DF042, DF043, DF047, DF050, DF054, DF055, DF057, DF058, DF061 if they are present or stored.

Conditions for applying fault finding procedures to stored faults:The fault is declared present after the ignition is switched on (forced + after ignition feed, see Introduction) and a brake release request using the control lever.

Special notes:The fault does not usually come from the assisted parking brake computer.8 braking applications (in 2 seconds) using the control lever without pressing the release switch, causes the fault to appear as present.Only for Vdiag 08 and 0C:If there is a stored fault, refer to the statuses and parameters when it appears.Explanation of counters: see Introduction.If the fault is stored and PR018 = 0 and PR022 > 25, clear the fault: do not take this fault into account.If the fault is stored and PR019 < 3, clear the fault: do not take this fault into account.

AFTER REPAIR




37B-55


08

DF048

CONTINUED 1




position.









With the parking brake control lever connector disconnected, check the presence of earth on track 2 of the lever connector.Repair if necessary.

Check the connections and condition of the assisted parking brake computer connectors and their clips (terminals) and its intermediate connector (under front left-hand seat).

AFTER REPAIR


FPA


37B-56


08

DF048

CONTINUED 2

With the parking brake control lever connector disconnected, check the insulation, continuity and the absence of interference resistance on the following connection:



track 4 track D3

Repair if necessary

If the fault is still present, check the release switch.Lever in rest position: insulation between tracks 2 and 4 of the lever.Lever fully applied and release switch pressed: continuity between tracks 2 and 4 of the lever.Replace the parking brake control lever if it does not operate as shown above, (see Replacement of components, Section A/ Procedure for replacing the assisted parking brake computer).


AFTER REPAIR


FPA


37B-57


08

DF049PRESENT

OR STORED

BRAKING1.DEF: Inconsistent braking value2.DEF: Nominal application value not reached3.DEF: Nominal release value not reached4.DEF: Insufficient braking force

NOTES

Priorities when dealing with of a number of faults:Deal with faults DF003 (1.DEF; 2.DEF), DF004, DF028, DF029, DF041, DF042, DF043, DF050, DF055, DF057, DF058, DF061 first.

Conditions for applying fault finding procedures to stored faults:The fault is declared present after the ignition is switched on (forced + after ignition feed, see Introduction) and an application request on a slope

1.DEF NOTES

Special notes: The specification of 1.DEF corresponds to an inconsistency between the measured force value (PR004) and the status of the parking brake (ET030: Operation of the assisted parking brake during a fault in the fault context).This fault can appear after disconnecting the battery (parking brake applied).

Check the context of the fault when the fault appears:

If ET030 is STATUS 5, STATUS 6, STATUS 7, STATUS 8, STATUS 9 or STATUS 10 and if PR004 is greater than 450 N and if PR012 Vehicle speed is 0 mph (km/h) when the fault appears:

– check to see if the battery has been disconnected, if it has, the appearance of this fault is normal, clear the fault,

– if not, check the computer supply voltage and the battery.Repair if necessary.If the fault is still present, contact the Techline.

If ET030 is STATUS 5, STATUS 6, STATUS 7 and if PR004 is less than 450 N and if PR012 Vehicle speed is less than 3 mph (5 km/h) when the fault appears:Check for traces of heating on the brakes:

– Check that the pads have returned correctly to the rest position– Check that the small lever has sufficient return force.– Check that there is no friction or points of resistance on the cables.– If there is no indication of any defective operation of these components and if PR019 < 3 and PR022 > 25 and

PR018 < 15, then clear the fault.– If not, contact the Techline.


AFTER REPAIR




37B-58


08

DF049

CONTINUED 1

2.DEF NOTES

Special notes:The specification 2.DEF mainly comes from a fault with the electrical power supply, braking application travel or the internal force sensor.

If this fault appears after the parking brake has been replaced:– Check the conformity of the parking brake fitting.– Check that the battery voltage PR001 is above 12.5 V.– Clear the fault and restart the procedure for fitting the parking brake: see Replacement of components.

Check the fault context when the fault appears: if the battery voltage PR001 is below 9 V when the fault appears, then:

– Check the power supply line and that the resistance is less than 150 mΩ.– If there is no indication of a fault on the power supply line and if PR019 < 3 and PR022 > 25 and PR018 < 15,

then clear the fault.

Check the fault context when the fault appears: If ET028: Brake switch signal is PRESSED, then:– If PR019 < 3 and PR022 > 25 and PR018 < 15, then clear the fault.– The fault can arise when the user presses hard on the brake pedal, when the parking brake is being applied.

If this is the case, clear the fault.

If there is a loud noise when applying, when maximum braking is requested, then the cause may be mechanical: refer to the mechanical MR.

Check that the parking brake mechanical tensioning line is correct:– Parking brake cables correctly fitted.– Good condition of the parking brake cables (no seizing or deterioration).– Conformity, condition and proper functioning of the rear brake callipers.– Condition and conformity of the rear brake pads.– Conformity of rear brakes bleeding.

Carry out the necessary repairs.

Using the diagnostic tool (PARKING sub-function), display the parameters PR005 Force setpoint and PR004 Measured force value. These must have the various values recorded in the conformity check.


AFTER REPAIR


FPA


37B-59


08

DF049

CONTINUED 2

3.DEF4.DEF NOTES

Special notes:The specification 3.DEF mainly comes from a fault with the electrical power supply or the internal force sensor.The specification 4.DEF mainly comes from an electrical power supply fault or an internal fault (motor, sensor, etc.). It indicates that the parking brake is neither applied or released.

Check the fault context when the fault appears: if the battery voltage PR001 is below 9 V when the fault appears, then:Check the power supply line and that the resistance is less than 150 mΩ.


AFTER REPAIR


FPA



08

DF050PRESENT

ORSTORED

MECHANICAL SEIZURE

NOTES

Priorities when dealing with a number of faults:Deal with faults DF046 Brake motor/cables connection, DF042 Force sensor and DF035 Undervoltage first if they are present or stored.


Check the brake callipers.Carry out the necessary repairs.

If the fault is still present, contact the Techline without clearing the faults.

AFTER REPAIR



37B-60


37B-61


08

DF051 PRESENT

OR STORED

SYSTEM FAULT AFTER COMPUTER REPLACEMENT

NOTES

Special notes:This fault indicates a process malfunction: the replacement or reconfiguration of the assisted parking brake computer was carried out with a fault present.


Using the diagnostic tool, run fault finding on the assisted parking brake computer.Deal with other present or stored faults first.Carry out any necessary repairs. Clear the fault.

If no fault is displayed on the diagnostic tool, carry out a conformity check to check the conformity of the parking brake system.

If the conformity check and fault finding with the diagnostic tool have not enabled the fault to be solved, (see the Introduction) for fault warning light management, to find out which components may be causing the malfunction.


AFTER REPAIR




37B-62


08

DF052 PRESENT

OR STORED

MULTIPLEX NETWORK1.DEF: Fault in receiving multiplex frames via the assisted parking brake computer:

The computer does not receive any multiplex signals or at least two computers are not communicating with the assisted parking brake computer.

NOTES

Priorities when dealing with a number of faults:Deal with faults DF003 (1.DEF; 2.DEF), DF004, DF028, DF029, DF041, DF042, DF043, DF050, DF055, DF057, DF058, DF061 first.

Deal with any multiplex network faults first (see fault finding manual 88B, Multiplexing)

Conditions for applying fault finding procedures to stored faults:Apply this fault finding procedure if the fault reappears as present after the ignition has been switched on (forced + after ignition feed, see Introduction).

Special notes:This fault indicates either a complete absence of multiplex signal transmission to the parking brake control unit, or no multiplex signal transmission from two computers (the continuity of multiplex network lines may be correct, but if two computers fail to respond, this fault is displayed again).The fault does not usually come from the assisted parking brake computer.Note:Using another battery for a boost when starting may trigger this fault.Only for Vdiag 08 and 0C:If there is a stored fault, refer to the statuses and parameters when it appears.Explanation of counters: see Introduction.If the fault is stored and PR018 = 0 and PR022 > 25, clear the fault: do not take this fault into account.

AFTER REPAIR




37B-63


08

DF052

CONTINUED

Check that an additional booster battery has not been used when starting, if this is the case, this fault may appear.

Use the diagnostic tool to carry out fault finding on the multiplex system.This check ensures that the various multiplex system connections are correct and finds any faulty segments.Carry out any necessary repairs.

If the multiplex system test has not made it possible to find the defective connection, disconnect the assisted parking brake computer connector to check it is in good condition and check the condition of the clips (terminals) and in particular the clips for tracks A2 and A3.Replace the clips if necessary.

With the assisted parking brake computer connector disconnected, check the insulation, continuity and the absence of interference resistance on the connections between tracks A2 and A3 of the assisted parking brake computer and the following computers:– anti-lock braking system, (see diagram of the different computers),– injection, (see diagram of the different computers),– automatic transmission (see diagram of the different computers),– UCH (see diagram of the different computers),– Protection and Switching Unit (see diagram of the different computers).Repair if necessary.


AFTER REPAIR


FPA


37B-64


08

DF054PRESENT

ORSTORED

BATTERY VOLTAGE TOO HIGH1.DEF : Battery voltage too high

NOTES

Priorities when dealing with of a number of faults:Deal with faults DF003 (1.DEF; 2.DEF), DF004, DF028, DF029, DF041, DF042, DF043, DF050, DF057, DF058, DF061 first.


Special notes:The fault does not usually come from the assisted parking brake computer.This fault appears as present if the computer feed voltage is greater than 16.5 V, and becomes stored when the voltage goes back down below 15.7 V.Note:Using another battery for a boost when starting may trigger this fault.Only for Vdiag 08 and 0C:If there is a stored fault, refer to the statuses and parameters when it appears.Explanation of counters: see Introduction.If the fault is stored and PR018 = 0 and PR022 > 25, clear the fault:do not take this fault into account.

Check the charging circuit: the alternator should not supply a voltage of less than + 12 V or greater than 14.4 V (engine at idle speed).Check the alternator and the regulator.Carry out the necessary repairs.

If the fault is still present, check that no electrical system using the same supply fuse as the assisted parking brake computer is faulty.


AFTER REPAIR




37B-65


08

DF055 PRESENT

OR STORED

BATTERY UNDERVOLTAGE1.DEF: Battery undervoltage

NOTES

Special notes:The fault does not usually come from the assisted parking brake computer.This fault appears as present if the computer feed voltage is less than 10.3 V, and becomes stored once the voltage rises back above 10.5 V.Only for Vdiag 08 and 0C:If there is a stored fault, refer to the statuses and parameters when it appears.Explanation of counters: see Introduction.If the fault is stored and PR018 = 0 and PR022 > 25, clear the fault:do not take this fault into account.

Note:This fault may appear if starting is very difficult.


AFTER REPAIR




37B-66


08

DF055

CONTINUED

Check that the battery, battery-starter-alternator connection lead, battery earth-chassis lead and the chassis earth-engine and transmission assembly lead are in good condition.Repair if necessary.

Check the charging circuit: the alternator should not supply a voltage of less than + 12 V or greater than 14.4 V (engine at idle speed).Carry out the necessary repairs.

Disconnect the parking brake control unit connector (under the body near the rear axle) to check the conformity of the power supplies (which must be equal to the voltage measured at the battery terminals ± 0.5 V) and to check the insulation, continuity and absence of interference resistance on the following connections:Parking brake computer connector

track H4

track G4 + AVC

track H2

track G2 earth


If the fault is still present, check that no electrical system using the same supply fuse as the assisted parking brake computer is faulty.


AFTER REPAIR


FPA


37B-67


08

DF056 PRESENT

OR STORED

BRAKE CABLES INCORRECTLY FITTED1.DEF: Incorrect fitting of brake cables detected

NOTES

Priorities when dealing with a number of faults:Deal with faults DF003 (1.DEF; 2.DEF), DF004, DF028, DF029, DF041, DF042, DF043, DF050, DF057, DF058, DF061 first.

Special notes:This fault only appears during configuration of the parking brake.The fault does not usually come from the assisted parking brake computer.


Check that the battery voltage PR001 is above 12.5 V.

Check that the mechanical tensioning line is correctly fitted: cables, connections, callipers.If the parking brake cables are damaged (particularly at the calliper collars), replace both cables.Start the assisted parking brake computer configuration process again: run command VP011 Computer calibration and initialisation (see the section Replacement of components).


AFTER REPAIR




37B-68


08

DF057PRESENT

ORSTORED

COMPUTER INTERNAL TEMPERATURE SENSOR1.DEF: Temperature sensor out of range (internal fault)2.DEF: Internal electronic fault

NOTES


Special notes:Before replacing an assisted parking brake computer, save the data from the old computer (for vehicles fitted with a manual gearbox).For this operation, (see Replacement of components).


AFTER REPAIR




37B-69


08

DF058 PRESENT

OR STORED

PARKING BRAKE MOTOR CURRENT1.DEF: Inconsistent current value

NOTES


Special notes:Before replacing an assisted parking brake computer, save the data from the old computer (for vehicles fitted with a manual gearbox).For this operation: (see Replacement of components).

Check to see if battery polarity has been inverted, if this is the case, clear the fault and check that the assisted parking brake computer is operating correctly (see System operation).

If the fault is still present, contact the Techline without clearing the fault.

AFTER REPAIR




37B-70

FPA Vdiag No.: 0C

DF059 PRESENT

OR STORED

NO PROTECTION AND SWITCHING UNIT MULTIPLEX SIGNAL1.DEF: No multiplex frames or invalid values (fault on computer transmitting the

signal or multiplex line fault)

NOTES


Deal with any Protection and Switching Unit computer faults first.The fault does not usually come from the assisted parking brake computer.

Conditions for applying fault finding procedures to stored faults:Apply this fault finding procedure if the fault reappears as present or stored after it has been cleared, the ignition has been switched back on (forced + after ignition feed: see Introduction), and the parking brake is released then applied by the control lever.

Special notes:This fault only relates to multiplex signals received from the Protection and Switching Unit computer.This fault indicates either that there is no signal or that the signals transmitted are inconsistent.Note:If a multiplex line fault such as this is present, the assisted parking brake computer may lose all or some of its assisted parking capabilities.

If there is a stored fault, refer to the statuses and parameters when it appears.Explanation of counters: see Introduction section.If the fault is stored and PR018 = 0 and PR022 > 25, clear the fault: do not take this fault into account.

AFTER REPAIR




37B-71


08

DF059

CONTINUED

Use the diagnostic tool to carry out fault finding on the multiplex system.This check ensures that the various multiplex system connections are correct and finds any faulty segments.Carry out any necessary repairs.

If the multiplex system test did not find the faulty connection, carry out a conformity check to check that the status from the Protection and Switching Unit computer is present and correct (ET016, PR015, PR017).Check the gearbox contacts.If the status and parameters shown here are not correct, carry out fault finding on the Protection and Switching Unit.

If the fault is still present, disconnect the Protection and Switching Unit computer connector to check that this connector and its clips (terminals) are in good condition, especially the multiplex track clips (see the Protection and Switching Unit wiring diagram affixed to the vehicle).Replace the clips if necessary.


AFTER REPAIR


FPA


37B-72


08

DF061PRESENT

OR STORED

UNIDENTIFIED ELECTRICAL FAULT1.DEF: The assisted parking brake computer has detected a fault during standby

mode (ignition off, vehicle doors and windows shut and lever indicator light off)

NOTES


Conditions for applying fault finding procedures to stored faults:Deal with this fault as if it were present.

Special notes:Before replacing an assisted parking brake computer, save the data from the old computer (for vehicles fitted with a manual gearbox).For this operation: (see Replacement of components).


AFTER REPAIR



ASSISTED PARKING BRAKEFault finding - Conformity check 37B

37B-73


08 Fault finding - Conformity check

MAIN SCREEN

NOTES

Only check conformity after a thorough check with the diagnostic tool.Application conditions: ignition on (forced + after ignition, see Introduction)Note:The interpretation of these statuses and parameters is only valid with the ignition switched on, the statuses and parameters displayed in blue on the diagnostic tool is information supplied by other computers, which are transmitted via the multiplex network. If these variables display inconsistent values, make sure that the multiplex system test has not shown up any faulty connections. Repair the faulty multiplex connections before looking for a possible signal fault.Each sub-function in this test is associated with a Fault finding chart.Special notes:The diagnostic tool may display the message Computer busy when viewing the statuses and parameters. This message is displayed when the parking brake is applying or releasing the brake, because the computer gives priority to controlling the motor before transmitting variables. If this message is displayed, exit the current screen and then return to it.

Order FunctionParameter or Status checked

or ActionDisplay and

notesFault finding

1Parking brake

operation statusET024: System operation

CUSTOMER MODE

If the status displays FACTORY MODE, the

computer is not operational.To enter CUSTOMER MODE, initialise the

computer again, by running command VP011 Computer

calibration and initialisation (see Replacement of components).

2Computer

electrical supply

ET001: + After ignition feed

Ignition off: ABSENT

Ignition on: PRESENT

In the event of a fault on this status, refer to the

interpretation of status ET001: + after ignition feed

PR001: Battery voltage9.6 V < PR001

< 15 V

If the value of the parameter is not within this range, check

the insulation, continuity and the absence of

interference resistance on the computer power supplies

and earths (see wiring diagram). If the fault is still

present, run fault finding on the charge circuit.

FPA_V0C_CCONF/FPA_V04_CCONF/FPA_V08_CCONF FPA


37B-74


08

MAIN SCREEN (continued 1)

NOTES

Only check conformity after a thorough check with the diagnostic tool.Application conditions: ignition on (forced + after ignition, see Introduction)Note:The interpretation of these statuses and parameters is only valid with the ignition switched on, the statuses and parameters displayed in blue on the diagnostic tool is information supplied by other computers, which are transmitted via the multiplex network. If these variables display inconsistent values, check that the multiplex system test has not shown up any faulty connections. Repair the faulty multiplex connections before looking for a possible signal fault.Each sub-function in this test is associated with a Fault finding chart.Special notes:The diagnostic tool may display the message Computer busy when viewing the statuses and parameters. This message is displayed when the parking brake is applying or releasing the brake, because the computer gives priority to controlling the motor before transmitting variables. If this message is displayed, exit the current screen and then return to it.



notesFault finding

3

Card: The card fully inserted status only

affects Vdiag 08

ET013: Card fully insertedPRESENT

orABSENT

FPA


37B-75


08


NOTES



or ActionDisplay and notes Fault finding

4Assisted parking

brake

PR005: Force setting In rest position:X = 0 N.

when applying the brake on a level surface:400 < X < 550 N

When fully applied (lever fully pulled for 2 seconds) on a level

surface:1100 < X < 1150 N

Note: Depressing the brake pedal when the parking

brake is applied changes the measured force value (change in

the tension of the brake cables) and the parking

brake may be over-application.

Interpretation of these parameters is only valid without any

pressure on the brake pedal.

The difference between the reference and measured values must be no greater

than - 50 N or + 100 N. If the

measured value does not reach or exceeds the reference value

(mechanical or electrical fault with the control), the assisted

parking brake computer will detect a fault (DF025 Vehicle

movement with maximum

application, DF049 Braking or DF050

Manual lock). If one of these three faults is

displayed by the diagnostic tool, use the

relevant fault finding procedure.

PR004:Measured force

value

FPA


37B-76


08


NOTES


Order FunctionParameter or Status checked or Action

Display and notes Fault finding

Assisted parking brake

(continued)ET011: Parking brake

No movement of the lever:

INACTIVEWhen being

released: Released (while releasing, then INACTIVE).When applying for

parking:STATUS 1 Static

brakingDuring emergency

braking:STATUS 2

dynamic braking (over 6 mph or

10 km/h). When the system is faulty:

FAULTY

If the status does not function as shown, refer to the

interpretation of fault DF043 Parking brake motor.

FPA


37B-77


08

Sub function: PARKING

NOTES




notesFault finding

1Computer

electrical supply

ET001: + After ignition feed




interpretation of status ET001: + after ignition

supply

PR001: Battery voltage 9 V < X < 15 V

In the event of a fault with this parameter, check the

insulation, continuity and the absence of interference resistance on the computer earths and feeds (see wiring diagram). If the fault is still

present, run fault finding on the charge circuit.

FPA


37B-78


08

Sub-function: PARKING (continued 1)

NOTES




notesFault finding

2Parking brake control lever

ET008:Braking switch

position

Lever released:INACTIVE

Lever pulled to the first

contact (approx-imately 3 mm

travel):ACTIVE

If the status does not operate as shown, apply the

interpretation of status ET008 Braking switch

position.

ET009:Redundant braking

switch position


Lever pulled to the second

contact (end of travel):

ACTIVE


interpretation of status ET009 Redundant braking

switch position.

ET010:Release switch

position

Lever in rest position:

RELEASED. Lever fully applied and

release switch pressed:

PRESSED


interpretation of status ET010 Release switch

position.

FPA


37B-79


08


NOTES




3Assisted parking

brake


when applying the brake on a level

surface:400 < X < 550 N

When fully applied (lever fully pulled for 2

seconds) on a level surface:

1100 < X < 1150 NNote:

Depressing the brake pedal when the parking brake is

applied changes the measured force value (change in the tension of the brake cables)

and the parking brake may be over-application.

The interpretation of these parameters is only valid without

any pressure on the brake pedal.

The difference between the reference and

measured values must be no greater than - 50 N or + 100 N. If the measured value does not reach or exceeds the reference value (mechanical or

electrical fault with the control), the assisted

parking brake computer will detect a fault (DF025 Vehicle movement with maximum application,

DF049 Braking or DF050 Manual lock). If one of

these three faults is displayed by the

diagnostic tool, use the relevant fault finding

procedure.

PR004:Measured force

value

FPA


37B-80


08


NOTES



or ActionDisplay and notes Fault finding

Assisted parking brake

(continued)ET011: Parking brake

No movement of the lever:

INACTIVEWhen released: Released (while releasing, then

INACTIVE),When applying for

parking:STATUS 1 Static

brakingDuring emergency

braking:STATUS 2

dynamic braking (over 6 mph or

10 km/h). When the system is faulty:

FAULTY

If the status does not function as shown, refer to the interpretation of fault

DF043 Parking brake motor.

4 Braking AC002: BrakingACTIVE or INACTIVE

5 Release AC003: ReleaseACTIVE or INACTIVE

FPA


37B-81


08

Sub-function: AUTOMATIC APPLICATION

NOTES




1Assisted braking

configurationET022:

Automatic braking

configurationWITH or WITHOUT

Depending on the customers request, the assisted parking

brake computer may be configured WITH or

WITHOUT assisted braking when stopping the engine.

Refer to the interpretation of status ET022 Automatic braking configuration.

2Computer

electrical supplyET001:

+ after ignition feed




interpretation of status ET001: + after ignition feed.

3 Engine

PR015: Engine speed 0 rpm In the event of a fault with this parameter and status, check that the injection computer is

sending signals correctly (absence of faults DF036 No injection multiplex signal

and DF052 Multiplex network). If the fault is still

present run fault finding on the injection computer).

ET019: Engine

STOPPEDOther possibilities depending on the

operating condition of the engine:

RUNNING– UNDER

STARTER– STALLED

FPA


37B-82


08

Sub-function: AUTOMATIC APPLICATION (continued 1)

NOTES




4 Wheel speeds PR012:Vehicle speed

X = 0 mph (km/h)

In the event of a fault with this parameter, check that

the anti-lock braking system computer is

sending the signal correctly (absence of fault DF037 No ABS multiplex signal and

DF052 Multiplex network). If the fault is still present run fault finding

on the ABS computer.

5Assisted

parking brakeET011: Parking brake

No movement of the lever:INACTIVE

When released: Released (while releasing, then

INACTIVE),When applying for parking:STATUS 1 Static brakingDuring emergency braking:

STATUS 2 dynamic braking. (above 6 mph (10 km/h)). When the

system is faulty: FAULTY

If the status does not function as shown, use the

interpretation of fault DF043 Parking brake

motor.

FPA


37B-83


08


NOTES




Assisted parking brake (continued)


when applying the brake on a level surface:

400 < X < 550 N When fully applied (lever fully

pulled for 2 seconds) on a level surface:

1100 < X < 1150 NNote:

Depressing the brake pedal when the parking brake is

applied changes the measured force value

(change in the tension of the brake cables) and the parking brake may

be super-locked.Interpretation of these

parameters is only valid without any pressure on

the brake pedal.

The difference between the reference and

measured values must be no greater than - 50 N or + 100 N. If the measured value does not reach or exceeds the reference value (mechanical or

electrical fault with the control), the assisted

parking brake computer will detect a fault (DF025 Vehicle movement with maximum application,

DF049 Braking or DF050 Manual lock). If one of

these three faults is displayed by the

diagnostic tool, use the relevant fault finding

procedure.

PR004:Measured

force value

FPA


37B-84


08


NOTES




6 Vehicle incline PR003: Slope value

On a level surface the value is:

- 2 d°°°° < X < + 2 d°°°°Possible values according

to the slope:- 25 d°°°° < X < + 25 d°°°°

On a level surface, if the reading is not 0 d°°°° ±±±± 2:

Refer to the interpretation of parameter PR003

Incline value.

FPA


37B-85


08

Sub-function: AUTOMATIC RELEASE

NOTES




1Assisted release

configurationET023:

Automatic release

configurationWITH or WITHOUT

Depending on the customers request, the assisted parking brake

computer may be configured WITH or

WITHOUT assisted brake release when driving the vehicle off. Refer to the interpretation of status

ET023 Automatic release configuration.

2Computer electrical supply

ET001:+ After ignition

feed




interpretation of status ET001: + after ignition

feed.

FPA


37B-86


08

Sub-function: AUTOMATIC RELEASE (continued 1)

NOTES




3Vehicles fitted with a manual

gearbox

ET016:Manual

gearbox lever position

Neutral: NEUTRALor

Gear engaged: NOT IN NEUTRAL

In the event of a fault with these statuses, check that the UCH is sending signals correctly (absence of fault DF039 No UCH multiplex

signal).If the fault is still present, carry out fault finding on

the UCH.

ET017:Reverse gear

engaged

YES(lever in reverse gear).

NO(for other gear lever

positions).

4

Vehicles fitted with an

assisted gearbox

ET018:Automatic

gearbox lever position

Depending on the lever position:

P, R, N, D or Manual mode (manual mode = sequential

gear selection position).

In the event of a fault with these statuses, check that the computers concerned

are sending signals correctly (absence of fault

DF038 No automatic transmission multiplex

signal and DF052 Multiplex network).

If the fault is still present run fault finding on the

computer concerned.

ET017:Reverse gear

engaged

YES(selector lever in R).

NO(for other gear lever

positions).

FPA


37B-87


08


NOTES




5Door opening

switchesET014:

Door opening switches

OPEN:driver's door open.

CLOSED:driver's doors closed.

Note:This status only works with

the driver's door.

If the status is not operating as shown, check that the UCH is correctly sending

the signal (absence of faults DF039 No UCH multiplex signal and

DF052 Multiplex network). If the status

functions with the passenger door but not the driver's door, reinitialise the

computer by running command VP011

Computer calibration and initialisation (see Replacement of

components) to configure the correct type of steering

(right or left-hand).If the fault is still present, run fault finding on the

UCH.

FPA


37B-88


08


NOTES




6 Clutch pedal PR006:Clutch pedal

position

No load position:0 < X < 20%

In the event of a fault, check that the potentiometer is fitted correctly. If the fault is still

present, consult the interpretation of fault DF015

Clutch position sensor circuit.Note:

The clutch pedal operating values differ according to the type of

steering.

Pedal fully depressed:

Right-hand drive:50 < X < 70%

Left-hand drive:70 < X < 90%

7Accelerator

pedalPR017:

Accelerator pedal position

No load position:0 < X < 10%

In the event of a fault with this parameter, check that the

injection computer is sending the signal correctly (absence of fault DF036 No injection multiplex

signal)).If the fault is still present, carry out

fault finding on the injection computer.

Note:The value of this parameter

depends on the injection fitted to the vehicle. The values noted in this check are therefore only

average values (refer to the injection conformity check).

Pedal depressed fully (depressed past resistance

point):110 < X < 120%Invalid value:

118% (this value means that the

signal is not being received, e.g.:

ignition switched off)

FPA


37B-89


08


NOTES




8 Engine

PR015: Engine speed 0 rpm.

In the event of a fault with this parameter and status, check that the injection computer is in fact

sending signals (absence of faults DF036 No injection multiplex signal and DF052 Multiplex

network).If the fault is still present, carry out

fault finding on the injection computer.

ET019: Engine



– RUNNING– STARTER ACTIVATED

– STALLED (in the event where the engine is not stopped in the normal way)

FPA



08


NOTES




9 Wheel speed PR012: Vehicle speed X = 0 mph (km/h)

In the event of a fault with this parameter, check that

the ABS computer is correctly sending the signal (no faults DF037 No ABS

multiplex signal and DF052 Multiplex

network). If the fault is still present run fault finding


FPA

37B-90


37B-91


08


NOTES




10Assisted

parking brake

PR005: Force setting In rest position: X = 0 N.when applying the brake

on a level surface:400 < X < 550 N

When fully applied (lever fully pulled for 2 seconds)


Note:Depressing the brake pedal when the parking

brake is applied changes the measured force value (change in the tension of the brake cables) and the

parking brake may be super-locked.

Interpretation of these parameters is only valid without any pressure on

the brake pedal.

The difference between the reference and measured

values must be no greater than - 50 N or + 100 N. If the measured value does not reach or exceeds the

reference value (mechanical or electrical fault with the control), the

assisted parking brake computer will detect a fault

(DF025 Vehicle movement with maximum

application, DF049 Braking or DF050 Manual lock). If one of these three faults is displayed by the diagnostic tool, use the


PR004:Measured force value

FPA


37B-92


08


NOTES




11Assisted




INACTIVE),When applying for parking:

STATUS 1: static braking.

During emergency braking:

STATUS 2: dynamic braking. (above 6 mph (10 km/h)). When the




motor.

12 Vehicle incline PR003: Slope value

On a level surface the value is:

- 2 d°°°° < X < + 2 d°°°°Possible values according

to the slope:- 25 d°°°° < X < + 25 d°°°°

On a level surface, if the reading is not 0 d°°°° ±±±± 2:

Refer to the interpretation of parameter PR003 Incline value.

FPA


37B-93


08

Sub-function: EMERGENCY BRAKING

NOTES




1 Engine ET019: Engine



– RUNNING– STARTER

ACTIVATED– STALLED

In the event of a fault with this status, check that the

injection computer is correctly sending the signal (absence of faults DF036 No injection multiplex

signal and DF052 Multiplex network).

If the fault is still present, run fault finding on the

injection computer.

2 Wheel speed

PR012: Vehicle speed X = 0 mph (km/h) In the event of a fault with these parameters, check that the anti-lock braking

system computer is correctly sending the

signals (absence of fault DF037 No ABS system

multiplex signal and DF052 Multiplex

network). If the fault is still present run fault finding


PR013:Rear left-hand wheel speed

X = 0 mph (km/h)

PR014:Rear right-hand wheel

speedX = 0 mph (km/h)

FPA


37B-94


08

Sub-function: EMERGENCY BRAKING (continued 1)

NOTES




3Parking brake control lever

ET008:Braking switch

position


Lever pulled to the firstcontact (approx-

imately 3 mmtravel):

ACTIVE

If the status does not operate as shown, apply

the interpretation of status ET008 Braking switch

position.

ET009:Redundant

braking switch position

Lever released INACTIVE

Lever pulled to the second contact (end of travel):

ACTIVE


the interpretation of status ET009 Redundant

braking switch position.

ET010:Release

switch position

Lever in rest position: RELEASED

Lever fully applied and release switch pressed:

PRESSED


the interpretation of status ET010 Release switch

position.

FPA


37B-95


08


NOTES




4Assisted




INACTIVE),When applying for parking:

STATUS 1: static braking.

During emergency braking:

STATUS 2: dynamic braking. (above 6 mph (10 km/h)). When the




motor.

FPA


37B-96


08


NOTES




1Assisted

parking brake


when applying the brake on a level surface:400 < X < 550 N

When fully applied (lever fully pulled for 2 seconds)


Note:Depressing the brake pedal when the parking

brake is applied changes the measured force value (change in the tension of the brake cables) and the

parking brake may be super-locked.

Interpretation of these parameters is only valid without any pressure on

the brake pedal.

The difference between the reference and measured

values must be no greater than - 50 N or + 100 N. If the measured value does not reach or exceeds the

reference value (mechanical or electrical fault with the control), the

assisted parking brake computer will detect a fault

(DF025 Vehicle movement with maximum

application, DF049 Braking or DF050 Manual lock). If one of these three faults is displayed by the diagnostic tool, use the


PR004:Measured

force value

FPA

ASSISTED PARKING BRAKEFault finding - Status summary table 37B

37B-97


08 Fault finding - Status summary table

Tool status Diagnostic tool title

ET001 + after ignition feed

ET008 Braking switch position

ET009 Redundant braking switch position

ET010 Release switch position

ET011 Parking brake

ET013 Card fully inserted (only for Vdiag 08)

ET014 Door opening switches

ET016 Manual gearbox lever position

ET017 Reverse gear engaged

ET018 Automatic gearbox lever position

ET019 Engine

ET022 Automatic braking configuration

ET023 Automatic release configuration

ET024 System operation

FPA

ASSISTED PARKING BRAKEFault finding - Interpretation of statuses 37B

37B-98


08 Fault finding - Interpretation of statuses

ET001

+ AFTER IGNITION FEED

NOTES None.

This status means there is a + 12 V computer after ignition.When the ignition is off, the status displays: ABSENT.When the ignition is on, the status displays: PRESENT.

If the status does not operate as specified: disconnect the assisted parking brake computer connector to check the insulation, continuity and the absence of interference resistance on the following connections:Automatic parking brake computer connector

track H4

track G4 + before ignition feed

track H2

track G2 earth


If the connections are correct, the power is correctly supplied to the assisted parking brake computer, but the fault is still present, contact the Techline.

AFTER REPAIR Repeat the conformity check from the start.

FPA_V0C_ET001/FPA_V04_ET001/FPA_V08_ET001 FPA


37B-99


08

ET008

ET009

ET010

BRAKING SWITCH POSITION

REDUNDANT BRAKING SWITCH POSITION

RELEASE SWITCH POSITION

NOTES None.

Using the diagnostic tool (PARKING sub-function), check the operation of the parking brake control lever. With the ignition switched on, statuses ET008, ET009, ET010 should operate as below:



position.



Lever applied slightly (3 mm

travel)ACTIVE INACTIVE RELEASED


Lever applied and release button

pressedACTIVE ACTIVE PRESSED

If the statuses do not function as specified, refer to the fault finding procedure for fault DF047 Manual control.


FPA_V0C_ET008/FPA_V0C_ET009/FPA_V0C_ET010/FPA_V04_ET008/FPA_V04_ET009/FPA_V04_ET010/FPA_V08_ET008/FPA_V08_ET009/FPA_V08_ET010 FPA


37B-100


08

ET022

AUTOMATIC BRAKING CONFIGURATION

NOTESSpecial notes:To understand the operation of assisted braking, refer to the System operation.

This status indicates the assisted braking configuration status.This configuration can be checked on two screens. Configuration reading screen (repair mode): LC009 Vehicle configuration (NORMAL with braking, COLD

CLIMATE without assisted braking). Variables screen (fault finding mode, assisted braking sub-function): ET022 Assisted braking configuration.When the assisted braking is ACTIVE, the status should be WITH.When the assisted braking is not ACTIVE (for cold countries, for example), the status should be WITHOUT.If the configuration does not match the customer request, reconfigure the assisted parking brake computer by activating configuration CF007 Vehicle configuration (repair mode, see Configuration and programming)




37B-101


08

ET023

AUTOMATIC RELEASE CONFIGURATION

NOTESSpecial notes:To understand the operation of assisted braking, refer to the System operation.

This status indicates the assisted release configuration status.This configuration can be checked on two screens. Configuration reading screen (repair mode): LC013 Automatic release (WITH or WITHOUT). Variables screen (fault finding mode, automatic release sub-function): ET023 Automatic release

configuration.When the assisted brake release is ACTIVE, the status should be WITH.When the assisted brake release is not ACTIVE (depending on the customer request), the status should be WITHOUT.If the configuration does not match the customer request, reconfigure the assisted parking brake computer by activating configuration CF011 Automatic release (repair mode, see Configuration and programming)



ASSISTED PARKING BRAKEFault finding - Parameter summary table 37B

37B-102


08 Fault finding - Parameter summary table

Tool parameter Diagnostic tool title

PR001 Battery voltage

PR003 Slope value

PR004 Measured force value

PR005 Force setting

PR006 Clutch pedal position

PR012 Vehicle speed

PR013 Rear left-hand wheel speed

PR014 Rear right-hand wheel speed

PR015 Engine speed

PR016 Engine torque (only for Vdiag 04)

PR017 Accelerator pedal position

FPA

ASSISTED PARKING BRAKEFault finding - Interpretation of parameters 37B

37B-103


08 Fault finding - Interpretation of parameters

PR003

SLOPE VALUE

NOTES None.

This parameter displays the vehicle's incline on a slope (X-axis).The value displayed represents degrees (and not percentage grade).Normally, this parameter should display:

– On a level surface: - 2 d°°°° < X < + 2 d°°°°– Possible values, depending on slope: - 25 d°°°° < X < + 25 d°°°°

If the values displayed are not correct, contact the Techline.


FPA_V0C_PR003/FPA_V04_PR003/FPA_V08_PR003 FPA

ASSISTED PARKING BRAKEFault finding - Interpretation of commands 37B

37B-104


08 Fault finding - Interpretation of commands

AC002

BRAKING

NOTESSpecial notes:The commands are found in the tool's fault finding mode, Actuator command button.

Running this command engages the assisted parking brake cables.It can therefore be used to test operation of the assisted parking brake motor, either to display a present fault or to test motor operation in the event of a control lever failure.Note:Before running this command, check that the brake cables are correctly fitted and that no one is working on the vehicle.Only run this command with the parking brake released.


FPA


37B-105


08

AC003

RELEASE

NOTESSpecial notes:The commands are found in the tool's fault finding mode, Actuator command button.

Running this command releases the assisted parking brake cables.It can therefore be used to test operation of the assisted parking brake motor, either to display a present fault or to test motor operation in the event of a control lever failure.Note:Before running this command, check that the brake cables are correctly fitted and that no one is working on the vehicle.Only run this command with the parking brake engaged.


FPA


37B-106


08

SC005

SAVE CLUTCH PEDAL PROGRAMMING

NOTESSpecial notes:The commands are found in the tool's repair mode, Programming button.

Run command SC005 Save clutch pedal programming with the assisted parking brake computer which is faulty or to be replaced.The pedals and the gearbox must not be operated during the backup procedure.Carrying out this backup procedure before each replacement of the computer enables the old clutch pedal travel specifications to be re-entered into the new assisted parking brake computer.

Park the vehicle on a level surface.– Select the diagnostic tool's Repair mode menu.– On the tool's navigation menu, select Programming.Run command SC005 Save clutch pedal programming.


FPA


37B-107


08

SC006

ENTER CLUTCH PEDAL PROGRAMMING


Once the assisted parking brake computer has been changed.Run command SC006 Enter clutch pedal programming after having run command SC005 Save clutch pedal programming.Test braking and release, and starting the assisted parking brake computer when applied, to check conformity.

Park the vehicle on a level surface.– Select the diagnostic tool's Repair mode menu.– On the tool's navigation menu select Programming.– Run command SC006 Enter clutch pedal programming.Note:When a new assisted parking brake computer is initialised, the slope sensor is calibrated after running command VP011 Computer calibration and initialisation.


FPA


37B-108


08

SC008

SLOPE INITIALISATION


Using the screen for the Automatic release sub-function on the diagnostic tool, display parameter PR003 Incline value.If the value displayed does not equal 0 d°°°° ±±±± 2 on a level surface: run the command by following the procedure described below.

Park the vehicle on a level surface.– Select the diagnostic tool's Repair mode menu.– On the tool's navigation menu select Programming.– Run command SC008 Angle initialisation.– Check the conformity of parameter PR003 Incline value.Note:When a new assisted parking brake computer is initialised, the slope sensor is calibrated after running command VP011 Computer calibration and initialisation.


FPA

ASSISTED PARKING BRAKEFault finding - Customer complaints 37B

37B-109


08 Fault finding - Customer complaints

NOTESOnly check the customer complaint after performing a complete check with the diagnostic tool.

NO DIALOGUE WITH THE COMPUTER. ALP 1

WILL NOT RELEASE. ALP 2

ASSISTED RELEASE TOO EARLY OR TOO LATE. ALP 3

ASSISTED BRAKING FAULTS.(when the engine switches off)

ALP 4

IMPOSSIBLE TO MANUALLY RELEASE ASSISTED PARKING BRAKE.

ALP 5

IMPOSSIBLE TO RELEASE WITH THE EMERGENCY BRAKE.

ALP 6

ASSISTED PARKING BRAKE SEEMS TO APPLY WHILST DRIVING.

ALP 7

ASSISTED PARKING BRAKE DOES NOT APPLY CORRECTLY ON A SLOPE.

ALP 8

FPA

ASSISTED PARKING BRAKEDiagnostic - Fault finding chart 37B

37B-110


08 Diagnostic - Fault finding chart

ALP 1 No dialogue with the computer

NOTES None.

Try the diagnostic tool on another vehicle.

Check:– the connection between the diagnostic tool and the diagnostic sensor (lead in good condition),– the connection between the diagnostic sensor and the diagnostic socket (lead in good condition),– the engine and passenger compartment fuses.

Check for + 12 V battery feed on track 16, and + 12 V after ignition feed on track 1 and an earth on track 5 and on track 4 of the diagnostic socket.Repair if necessary.

Disconnect the automatic parking brake computer connector to check the insulation, continuity and the absence of interference resistance on the following connections:Automatic parking brake computer connector

track H4

track G4 + AVC

track H2

track G2 earth

track A4 track 7 of the diagnostic socket (K line)


AFTER REPAIRCarry out a check using the diagnostic tool.Deal with any other faults.

FPA_V0C_ALP1/FPA_V04_ALP1/FPA_V08_ALP1 FPA


37B-111


08

ALP 2 Will not release

NOTES

Only investigate this customer complaint after a full check using the diagnostic tool (no faults must be present or stored).The main causes of the brake not releasing are:

– Driver's door incorrectly closed (on vehicles with an automatic transmission).– Insufficient acceleration value.– Fault with gearbox switch.– Fault with door switch.– Pads stuck.– Incorrect multiplex line signals.

If the manual release will not work, see ALP 4.

Check that the force applied to the accelerator pedal is sufficient whether or not the vehicle is on a downward slope or not.

For a vehicle fitted with an automatic transmission, check that the door on the driver's side is not open or incorrectly closed.Close the door and put the vehicle back into neutral, if necessary.

Check that the interior lights have gone out.Check that the door switch is working correctly:Check the insulation, continuity and the absence of interference resistance on the following connections:– connection code 133B– connection code 133CBetween the door switch, component code 1217 and the UCH, component code 645 (see 87B, UCH, Door switch).If there is repair method (see Technical Note 6015A, Repairing electrical wiring, Harnesses: Repair precautions), repair the wiring; if not, replace it.Repair if necessary.

Check that the force applied to the accelerator pedal is sufficient and that the accelerator value is sufficient (refer to the conformity check) whether the vehicle is on a downward slope or not.

Check the operation of the gearbox switch (see 23A, Automatic transmission, Gearbox switch).Repair if necessary.

Test the braking system:Look for any areas where the brake pads may be sticking (due to ice, salt, etc.).Check that the brake piston is operating correctly.Repair if necessary.Test the multiplex network and check any incorrect multiplex line signals coming from the injection, automatic transmission, and UCH computers.





37B-112


08

ALP 3 Release too early or too late

NOTESOnly investigate this customer complaint after a full check using the diagnostic tool (no faults must be present or stored).

Assisted release may be activated too late if a trailer is attached to the vehicle.Test assisted release without the trailer.

Test the braking system:Look for any areas where the brake pads may be sticking (due to ice, salt, etc.).Check that the brake piston is operating correctly.Repair if necessary.

Check the clutch sensor positioning: Espace IV and Vel SatisCheck the insulation, continuity and the absence of interference resistance on the following connections:– connection code 150K,– connection code 150L,– connection code 26X.Between the assisted parking brake computer, component code 1217 and the clutch position sensor, component code 1057. (See 87B, UCH, Door switch).If there is repair method (see Technical Note 6015A, Repairing electrical wiring, Harnesses: Repair precautions), repair the wiring; if not, replace it.Reposition it, if necessary.Replace the clutch sensor, if necessary. Laguna II and Mégane IICheck the insulation, continuity and the absence of interference resistance on the following connections:– connection code 150Q,– connection code 150L.Between the assisted parking brake computer, component code 1217 and the clutch pedal sensor, component code 675. (see section 87B, UCH, Door switch).1. Laguna II:Check the continuity and absence of interference resistance on the following connection:– connection code 86D.Between the injection computer, component code 120 and the clutch pedal switch, component code 675.2. Mégane II:Check the continuity and absence of interference resistance on the following connection:– connection code H51.Between the injection computer, component code 120 and the clutch pedal switch, component code 675.If there is repair method (see Technical Note 6015A, Repairing electrical wiring, Harnesses: Repair precautions), repair the wiring; if not, replace it.Reposition it, if necessary.Replace the clutch sensor, if necessary.




37B-113


08

ALP 3

CONTINUED

Reconfigure the vehicle clutch curve by applying the special command SC006 Enter clutch pedal programming.Test the assisted brake release.

Check the condition of the clutch system (wear of the different components, possible build-up of grease on surfaces in friction).Repair if necessary.Test the multiplex network and check any faults on the injection, automatic transmission, and UCH computers.



FPA


37B-114


08

ALP 4 Assisted braking fault (when the engine is stopped)


Check any faults on the UCH, injection and ABS computers, to ensure they have actually received a request to stop the engine.Test the application of the assisted parking brake with the engine switched off.

Incorrect signal faults on the multiplex line.Test the multiplex network (see 88B, Multiplexing).

After the engine stalls, the automatic braking function is not activated.

Check the + 12 V supply, the insulation, continuity and the absence of interference resistance on the following connection:– connection code BP2.Between the assisted parking brake computer, component code 1217 and the battery, component code 107.If the continuity is correct, test the charge circuit (see Technical Note 6014A, Checking the charging circuit).Repair if necessary.





37B-115


08

ALP 5 Impossible to manually release assisted parking brake


Check any incorrect signals on the multiplex line.Test the multiplex network (see 88B, Multiplexing).

Check that the card is correctly inserted for a card reader, scenario 1 (not hands-free).If not refer to the fault finding procedure for the UCH (see 87B, Passenger compartment connection unit).Reposition it, if necessary.

Check that the steering column is unlocked.

Check the + 12 V supply, the insulation, continuity and the absence of interference resistance on the following connection:– connection code BP2.Between the assisted parking brake computer, component code 1217 and the battery, component code 107.If the continuity is correct, test the charge circuit (see Technical Note 6014A, Checking the charging circuit).Repair if necessary.

Check the operation of the release switch.Check the continuity of the following connection codes:– connection code 150P,– connection code 150N,– connection code 150B,– connection code 150G,Between the assisted parking brake lever control unit, component code 1216 and the assisted parking brake computer, component code 1217.Repair if necessary.





37B-116


08

ALP 6 Impossible to release with the emergency brake


Check that the assisted parking brake is not already released.

Check that the force is sufficient to release the emergency brake.Reduce the emergency brake cable voltage, if necessary.





37B-117


08

ALP 7 The assisted parking brake seems to apply whilst driving


Check that the engine has not stalled whilst driving.

Check that the assisted parking brake is actually released.

Check that the injection control system is not in defect mode (engine Limp Home).Test the multiplex network.Check any injection computer faults.If the fault is still present, contact the Techline.




37B-118


08

ALP 8 The assisted parking brake does not apply correctly on a slope


Check that the vehicle is correctly gripping the ground.

Check that the vehicle is not outside the limits.

Check the + 12 V supply, the insulation, continuity and the absence interference resistance on the following connection:– connection code BP2Between the assisted parking brake computer, component code 1217 and the battery, component code 107.If the continuity is correct, test the charge circuit (see Technical Note 6014A, Checking the charging circuit).Repair if necessary.

Check the condition of the brake pads (wear, fitting, insufficient run-in, etc.).Replace if necessary.

Check the condition of the brake callipers.Repair if necessary.

Check the fitting of the pressure plate between the assisted parking brake and the brake calliper.Refit if necessary.




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