Defecte Senzori de Parcare

8/22/2019 Defecte Senzori de Parcare

http://slidepdf.com/reader/full/defecte-senzori-de-parcare 1/31

Electrical equipment

77 11 322 302

"The repair procedures given by the manufacturer in this document are based on the

technical specifications current when it was prepared.

The procedures may be modified as a result of changes introduced by the

manufacturer in the production of the various component units and accessories fromwhich his vehicles are constructed."

MARCH 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 partreference numbering system is forbidden without the prior written authority of

Renault s.a.s.

© Renault s.a.s. 2006

PARKING PROXIMITY SENSOR

Vdiag No.: 04

Fault finding - Introduction 87F - 1

Fault finding - System operation 87F - 7

Fault finding - Track allocation 87F - 8

Fault finding - Configuration and programming 87F - 9

Fault finding - Summary table of faults 87F - 10

Fault finding - Interpretation of faults 87F - 11Fault finding - Conformity check 87F - 19

Fault finding - Interpretation of states 87F - 21

Fault finding - Interpretation of parameters 87F - 24

Fault finding - Customer complaints 87F - 26

Fault finding - Fault finding chart 87F - 27

87F




Fault finding - Introduction 87F

87F-1

Vdiag No.: 04

187FPARKING PROXIMITY SENSOR

Fault finding - Introduction

1. SCOPE OF THIS DOCUMENT

This document describes the fault-finding applicable to all Electronic Central Units with the following characteristics:

2. PREREQUISITES FOR FAULT FINDING

Documentation type

Fault finding procedures (this manual):

– Assisted fault finding (incorporated into the diagnostic tool), paper version (Workshop Repair Manual or

Technical Note) and Dialogys.

Wiring Diagrams:

– Visu-Diagram (CD-ROM), paper.

Type of diagnostic tools

– CLIP

Special tooling required

3. REMINDERS

Procedure

To run diagnostics on the vehicle's computers, switch on the ignition in fault finding mode (+ after ignition forced

setting).

Proceed as follows: – Renault card on the card holder (keyless vehicle scenario 1, basic, not hands-free and scenario 2, top

of the range, hands-free),

– Press and hold start button (longer than 5 seconds) with start-up conditions not fulfilled,

– Connect the diagnostic tool and perform the required operations.

To cut off + after ignition, proceed as follows: – Disconnect the diagnostic tool,

– Press the start button twice briefly (less then 3 seconds),

– Ensure that the + after ignition feed has been cut off by checking that the computer warning lights on

the instrument panel have gone out.

Vehicle(s): Scénic II

Function concerned: Parking aid

Name of computer: AAP

Program no.: 0000

VDIAG No.: 04

Essential special tooling

Multimeter

Universal terminal unit Elé. 1681

Note:

The left-hand and right-hand Xenon bulb computers are powered when the dipped headlights are lit. Fault finding

procedures can only be carried out on them after the ignition has been switched on in fault finding mode (+ after

ignition forced setting) and the dipped headlights are on.

AAP X84 - 1.0





87F-2

Vdiag No.: 04

Faults

Faults are declared to be either present or stored (depending on whether they appeared in a certain situation and

have disappeared since, or whether they remain but are not diagnosed within the current context).

The present or stored state of faults should be taken into consideration when the diagnostic tool is used after the

+ after ignition feed (without acting on the system components).

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

For a stored fault, note the faults displayed and apply 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 faulty component,

– the condition of the wires (melted or cut insulation, wear).

Conformity check

The conformity check is designed to check the states and parameters which do not display any faults on the

diagnostic tool when inconsistent. This phase therefore allows:

– Fault finding on faults which are not displayed but which may correspond to a customer complaint.

– Checks that the system operates correctly and that there is no risk of a fault reappearing after repairs.

This section gives the fault finding procedures for states and parameters and the conditions for checking them.

If a state is not operating normally or a parameter is outside permitted tolerance values, you should consult the

corresponding fault finding page.

Customer complaints - Fault finding chart

If the diagnostic tool check is correct, but the customer complaint persists, the problem should be dealt with

according to the customer complaint.

A synopsis of the general procedure to follow is provided on the following page in the

form of a flow chart.

AAP X84 - 1.0





87F-3

Vdiag No.: 04

4. FAULT FINDING PROCEDURE

Check the battery charge and

condition of the fuses

Print the system fault finding log

(available in CLIP or in the

Workshop Repair Manual or

Technical Notes)

Connect CLIP

Dialogue with the

ECU?

yes

Read faults

Faults present

yes

Deal with faults found

Deal with stored faults

The symptom persists

yes

See CHART 1.

Conformity check


Use fault finding charts 5


Contact Techline with the

completed fault finding log

no

no

no Problem

solved

Problem

solved

no Problem

solved

no

AAP X84 - 1.0





87F-4

Vdiag No.: 04

You will always be asked for this report:

q When requesting technical assistance from the Techline.

q For certification requests when replacing parts that must be certified.

q Which must be attached to monitored parts for which reimbursement is requested. It is therefore used

to decide whether a reimbursement will be made under warranty and leads to improved analysis of the

removed parts.

6. SAFETY INSTRUCTIONS

All work on components requires obeying safety rules to prevent physical damage or human injury:

– Make sure the battery is properly charged to avoid damaging the computers with a low charge.

– Use the proper tools.

5. FAULT FINDING LOG

WARNING:

WARNING

All problems involving a complex system call for thorough diagnostics with the appropriate tools.

The FAULT FINDING LOG, which should be completed during the fault finding procedure,ensures a record is kept of the procedure carried out. It is an essential item when discussing the

fault with the constructor.

IT IS THEREFORE MANDATORY TO FILL OUT A FAULT FINDING SHEET EACH TIME FAULT FINDING

IS DONE.

AAP X84 - 1.0



List of monitored parts: Computer

FAULT FINDING LOGSystem: Parking aid

Page 1 / 2

q Administrative identification

Date 2 0

Sheet completed by

VIN

Engine

Diagnostic tool CLIP

Version

q Customer complaint

1198 No sound signal 1198 Constant sound signal 1198 The system does not detect

obstacles

Other Your comments

q Conditions under which the customer complaint occurs

011 When switched on 005 While driving 004 Intermittently

009 Sudden breakdown 999 When reverse gear is

engaged

Other Your comments

q Documentation used in fault finding

Fault finding procedure

Type of fault finding manual: Workshop Repair Manual Technical Note Assisted fault finding

Fault Finding Manual No.:

Wiring diagram used

Wiring Diagram Technical Note No.:

Other documentation

Title and/or part no.:

FD 24

Fault finding log

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



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

FAULT FINDING LOGSystem: Parking aid

Page 2 / 2

q Identification of the computer and system parts replaced

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

q Faults found with the diagnostic tool

Fault no. Present Stored Fault title Specification

q Conditions when fault occurs

State or parameter no. Name of parameter Value Unit

q System-specific information

Description:

q Additional information

What factors led you to replace the

computer?

What other parts were replaced?

Other defective functions?

Your comments

FD 24

Fault finding log

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




Fault finding - System operation 87F

87F-7

Vdiag No.: 04Fault finding - System operation

FUNCTIONAL DESCRIPTION

The system consists of four sensors mounted in the rear bumper, a computer and a buzzer.

The system assists the driver during parking maneouvres by warning of any obstacles behind the car.

– The sensors and the computer calculate the distance between the car and any obstacles. The sensors operate over

a distance range from 20 - 30 cm minimum to 150 cm maximum.

– The driver is informed of the distances by a buzzer .

– The system only works when the vehicle is in reverse gear . Activation is signalled by a brief 0.5-second ON tone.

The audible warning is activated when the car is 150 cm from the obstacle. As the distance diminishes, the frequency

of the warning signal increases. When the distance reaches 20 - 30 cm, the warning signal becomes steady.

– The system can only be activated with + after ignition feed.

DEACTIVATING THE SYSTEM

The parking aid system can be deactivated in two ways:

– Temporary deactivation: a brief press (one second) on the parking aid switch on the instrument panel

deactivates the system (the red light on the switch comes on). The function can be turned on again by a second

brief press (the red light on the switch goes out) or by turning the ignition off and back on.

– Permanent deactivation: the parking aid system can be deactivated for a longer time with a long press (about

three seconds) on the parking aid switch on the instrument panel (the red light on the switch comes on). The

function can be turned on again only by a second long press (the red light on the switch goes out).

Fault finding

A low 5-second audible signal informs the driver that a system fault has occurred when the ignition is

switched on.

Note:

The status screen of the fault-finding tool can be used to determine the state of the system (ready, detecting,

suspended or off) with status ET003 "Parking aid function" (see conformity check or status interpretation).

AAP X84 - 1.0




Fault finding - Track allocation 87F

87F-8

Vdiag No.: 04Fault finding - Track allocation

Computer track Description Destination track

1 + 12 volts after ignitionTrack 11 of the Protection and

Communication Unit PPH2 connector

2 + 12 volts alarm Track 2 of the parking aid alarm

3 Computer EARTH

4 Reverse-gear signal (+ 12 volts)Track 9 of the Protection and

Communication Unit PPH2 connector

5 Indicator light control Track B2 of the parking aid switch

6 Alarm earth Track 1 of the parking aid alarm

7

8 Diagnostic line K Track 7 of the diagnostic socket

9 + 12 volts proximity sensors Track 1 of the 4 proximity sensors

10 Proximity sensors earth Track 3 of the 4 proximity sensors

11

12 Parking-aid switch on/off signal Track B1 of the parking aid switch

13 Right-hand inner sensor signal Track 2 of the inner right sensor

14 Left-hand inner sensor signal Track 2 of the inner left sensor

15 Left-hand outer sensor signal Track 2 of the outer left sensor

16 Right-hand inner sensor signal Track 2 of the outer right sensor

Note:

The computer and alarm are located on the left side of the luggage compartment behind the interior lining.

AAP X84 - 1.0




Fault finding - Configuration and programming 87FVdiag No.: 04Fault finding - Configuration and programming

CONFIGURATION AFTER REPLACING THE COMPUTER

Following a computer replacement, the parking aid computer has to be reconfigured to inform it of the body type with

configuration "CF005 VEHICLE IDENTIFICATION" (fault-finding tool repair-mode menu, configuration service). The

configuration adapts the sensors' detection field to the type of body.The type of gearbox associated with the body type (automatic or manual transmission) determines the timing of the

parking aid coming on. In fact, the parking aid coming on is indicated by a brief 5-second activation tone (vehicle

is in reverse gear). In vehicles with automatic transmission, the 3-second timer prevents the activation tone from

sounding every time the driver switches from Park to Drive.

Two types of vehicle can be programmed:

– J84 / R84 TA: Short and long Scénic II with automatic transmission.

– J84 / R84 BVM: Short and long Scénic II with manual transmission.

Following computer configuration, the configuration has to be confirmed by reading configuration "LC005 VEHICLE

IDENTIFICATION" (fault-finding tool repair-mode menu, read configuration service).

SETTING OPTIONS

At the customer's request, the volume and tone of the buzzer can be adjusted (fault-finding tool repair-mode menu,

configuration service).

Configuration "CF001 BUZZER VOLUME)" is used to adjust the volume.

There are five selections:

– NONE

– LOW

– MEDIUM

– LOUD

– MAXIMUM

Configuration "CF006 TONE SETTING)" is used to adjust the tone of the buzzer.

There are three selections:

– 800 Hz

– 1000 Hz

– 2000 Hz (high-pitch)

After the computer has been configured, the configuration has to be confirmed by reading configurations "LC001

BUZZER VOLUME" and "LC006 TONE SETTING" (fault-finding tool repair-mode menu, read configuration service).

AAP X84 - 1.0

87F-9




Fault finding - Summary table of faults 87FVdiag No.: 04Fault finding - Summary table of faults

Fault names DTC

DF002 OUTER LEFT SENSOR 90 01

DF003 INNER LEFT SENSOR 90 02

DF004 OUTER RIGHT SENSOR 90 04

DF005 INNER RIGHT SENSOR 90 03

DF006 BUZZER 90 06

DF007 SENSOR POWER SUPPLY 90 07

DF008 COMPUTER FAULT 90 05

DF012 PARKING AID SWITCH LIGHT 90 10

AAP X84 - 1.0

87F-10




Fault finding - Interpretation of faults 87FVdiag No.: 04Fault finding - Interpretation of faults

DF002

PRESENTOR

STORED

LEFT-HAND OUTER SENSOR

CC.1 : Short circuit to + 12 V

CO.0 : Open circuit or short circuit to earth

1.DEF: Internal electronic fault.

NOTES

Conditions for applying the fault finding procedure to the stored fault:

The fault is declared present after:

– shifting into reverse if the parking aid system is ON (READY): parking aid light switch

off, see the interpretation of status ET003 "Parking aid function".

Special notes:

This fault is indicated by the buzzer (5-second alarm) and the system shuts off.

Switch off the ignition and disconnect the computer's 16-track connector.

With the 16-track connector disconnected, measure resistances inside the computer:

The computer resistance between track 15 and track 9 should be 215 kΩΩΩΩ ±±±± 10 kΩΩΩΩ.


If the readings do not match the above values, or if there is a short circuit between the specified tracks, contactyour Techline.

If the above check fails to solve the problem, remove the rear bumper and disconnect the outer left proximity

sensor's 3-track connector.

Check the condition of the sensor connector. Replace the connector if necessary.Measure the resistance between sensor track 2 (signal) and track 1 (power). Replace the sensor if the

resistance is not infinite.

Then measure the resistance between sensor track 2 (signal) and track 3 (earth). Replace the sensor if the

resistance is not 98 kΩΩΩΩ ±±±± 5 kΩΩΩΩ (wait a few seconds for the reading to stabilize).

With the ignition off , disconnect the parking-aid computer connector to check the insulation, continuity and

absence of interference resistance on the following connections:

Parking aid computer Left-hand outer sensor

Track 9 Track 1

Track 15 Track 2Track 10 Track 3

Repair if necessary (see vehicle diagram).

If the above checks fail to solve the problem, replace the outer left proximity sensor.

AFTER REPAIR – Clear the fault memory. – Follow the instructions to confirm repair.

– Deal with any other possible faults.

AAP X84 - 1.0

87F-11




Fault finding - Interpretation of faults 87FVdiag No.: 04

DF003

PRESENTOR

STORED

LEFT-HAND INNER SENSOR




NOTES





Special notes:







If the above check fails to solve the problem, remove the rear bumper and disconnect the inner left proximity








Parking aid computer Left-hand inner sensor

Track 9 Track 1

track 14 Track 2track 10 Track 3


If the above checks fail to solve the problem, replace the inner left proximity sensor.



AAP X84 - 1.0

87F-12





DF004

PRESENTOR

STORED

RIGHT-HAND OUTER SENSOR




NOTES





Special notes:







If the above check fails to solve the problem, remove the rear bumper and disconnect the outer right proximity








Parking aid computer Right-hand outer sensor

Track 9 Track 1



If the above checks fail to solve the problem, replace the outer right proximity sensor.



AAP X84 - 1.0

87F-13





DF005

PRESENTOR

STORED

RIGHT-HAND INNER SENSOR




NOTES





Special notes:







If the above check fails to solve the problem, remove the rear bumper and disconnect the inner right proximity








Parking aid computer Right-hand inner sensor

Track 9 Track 1



If the above checks fail to solve the problem, replace the inner right proximity sensor.



AAP X84 - 1.0

87F-14





DF006

PRESENTOR

STORED

BUZZER



NOTES





Special notes:

This fault is indicated by the absence of a 1-second signal from the buzzer when

shifting into reverse.


With the 16-track connector disconnected, measure the resistance inside the computer between track 2 and

track 6. The computer should have a resistance of 314 ΩΩΩΩ.

If the reading does not match the above values, or if there is a short circuit between the specified tracks,

contact your Techline.

Check the connection and condition of the connector on the buzzer.

Replace the connector if necessary.



Parking aid computer Buzzer

Track 2 Track 2

Track 6 Track 1


Measure the resistance of the buzzer between track 1 and track 2.

Replace the buzzer if its resistance is not approximately 48 ΩΩΩΩ.

If the above checks fail to solve the problem, replace the buzzer.



AAP X84 - 1.0

87F-15





DF007

PRESENTOR

STORED

SUPPLY VOLTAGE SENSORS

CC.0 : Short circuit to earth

NOTES


Apply this fault finding procedure if the fault appears as present or stored again after:

– clearing the fault, switching the ignition off and on, and shifting into reverse.

Special notes:The sensors receive a 12-volt power supply directly from the computer.

With the parking aid computer 16-track connector connected and the ignition on, measure the sensor power

supply coming from the computer. The power reading between track 9 (+ 12 V) and track 10 (earth) should

be the same as the battery voltage (± 0.5 V).

If there is not a 12-V power supply between the tracks specified above, remove the rear bumper to access the

sensors.

Switch off ignition and disconnect the parking-aid computer connector to check the insulation, continuityand absence of interference resistance on the following connections:

Parking aid computer connector Sensors

Track 9 Track 1 of the four sensorsTrack 10 Track 3 of the four sensors

Repair if necessary.

If the sensor power supply tests okay (no short circuit), reconnect the computer connector and four sensor

connectors.

Turn on the ignition and disconnect the sensors, one at a time, to see if any of the sensors causes the power

supply to drop. Replace the faulty sensor.

If the fault persists, contact your Techline.



AAP X84 - 1.0

87F-16





DF008

PRESENTOR

STORED

COMPUTER FAULT

1.DEF : Electric fault inside computer



NOTES


Apply this fault finding procedure if the fault appears as present or stored again after:

– clearing the fault, switching the ignition off and on, and shifting into reverse.

Special notes:

If the fault is present and characterized 1.DEF, the system operates in defect mode

(substitute values are used).

If the fault is present and characterized 3.DEF, and the buzzer fails to sound when

shifting into reverse, contact your Techline.

After following the instructions, if the fault recurs, switch off the ignition and disconnect the parking aid

computer supply fuse (see vehicle diagram).

Plug the fuse back in, switch the ignition back on, and do a fault reading.

If the fault recurs, check the connections and condition of the parking aid computer connector (no damage

to the connections).


With the ignition off , disconnect the parking aid computer connector to make sure the power supply is okay

and check the insulation, continuity and absence of interference resistance in the following connections:

Parking aid computer connector

Track 1 + After ignition (track 11 of the Protection and Switch Unit

PPH2 connector)

Track 3 Earth


If the above checks fail to solve the problem, contact your Techline.



AAP X84 - 1.0

87F-17





DF011

PRESENTOR

STORED

WARNING LIGHT

CC.0 : Short circuit to earth

CO.1 : Short circuit or open circuit to + 12 V

NOTES



– shifting into reverse and pressing the switch to turn off the parking aid.

Remove the parking aid switch and check the connections and condition of its connector.


Check for an earth on track B3 of the parking aid switch connector.


With the ignition off , disconnect the parking-aid switch connector to check the insulation, continuity and

absence of interference resistance on the following connection:

Parking aid switch connector Parking aid computer connector

Track B2 Track 5


If the connection just checked is okay (no open or short circuit), and there is an earth on track B3 of the switch

but the problem persists, replace the parking aid switch.



AAP X84 - 1.0

87F-18




Fault finding - Conformity check 87FVdiag No.: 04

187FPARKING PROXIMITY SENSOR

Fault finding - Conformity check

NOTES Only check the conformity after a complete check with the diagnostic tool.

Fault-finding test conditions: ignition on.

Order FunctionSetting Status

Checked or ActionDisplay and notes Fault finding

1Parking aid

system status

ET003: Parking aid

function

READY

(system operating and

ready to detect)

For more information or, if

there is a problem, see the

fault finding for status

ET003.

DETECTING

(if the system is

detecting)

SUSPENDED(if the system is

temporarily switched

off)

OFF

(if the system is

completely switched

off)

2Parking aid ON/

OFF switch.

ET004: PARKING AID

SWITCH

PRESS DETECTED

when the switch is

pressed, RELEASED

when released.

If the switch does not

operate as specified:

Replace the switch.

3 Supplies

PR006: Sensor supply

voltage

10.5 V < X < 14.4 V If there is a problem, apply

fault-finding procedure

DF007.

PR020: Computer

supply voltage

10.5 V < X < 14.4 V If there is a problem with

this parameter, check theinsulation, continuity and

absence of interference

resistance on the

computer power supply

and earth (see wiring

diagrams). If the problem isstill present, carry out a

fault finding test on the

charging circuit.

4Reverse gear

selection

ET001: Reverse gear

engaged

YES

or

NO

In the event of a problem:

see the fault finding

procedure for status

ET001.

AAP X84 - 1.0

87F-19




Fault finding - Conformity check 87F

87F-20

Vdiag No.: 04

NOTES Only check the conformity after a complete check with the diagnostic tool.

Fault-finding test conditions: ignition on.

Order FunctionParameter or State Check

or ActionDisplay and notes Fault finding

5 Buzzer control

ET002: Buzzer control ON

when the buzzer

sounds.

OFF otherwise.

If there is a fault, refer to

the fault finding procedure

for status ET002.

6

Proximity

sensors

PR001: Left hand outer

sensor distance

20 cm < X < 150 cm

depending on theproximity of the

obstacle. (value beyond

detection: 255 cm).

In the event of a problem,

refer to the fault findingprocedure for parameter

PR001.

PR002: Left hand inner

sensor distance

20 cm < X < 150 cm

depending on the

proximity of the

obstacle. (value beyond

detection: 255 cm).


refer to the fault finding

procedure for parameter

PR002.

PR003: Right hand outer

sensor distance

20 cm < X < 150 cm

depending on the

proximity of theobstacle. (value beyond

detection: 255 cm).



procedure for parameter PR003.

PR004: Right hand inner

sensor distance

20 cm < X < 150 cm

depending on the

proximity of theobstacle. (value beyond

detection: 255 cm).



procedure for parameter PR004.

PR005: Shortest

distance

calculated

20 cm < X < 150 cm

depending on the

proximity of the

obstacle. (value beyonddetection: 255 cm).



procedure for parameter

PR005.

AAP X84 - 1.0




Fault finding - Interpretation of states 87F

87F-21

Vdiag No.: 04Fault finding - Interpretation of states

ET001

REVERSE GEAR ENGAGED

NOTES

Special note:

This fault finding applies if reverse-gear status is not properly displayed (status

displays YES or NO steadily, whether or not in reverse).

Make sure the reversing lights working properly: they should come on when shifting into and go off when

shifting out of reverse.

If the reversing lights fail to function as specified, make the necessary repairs.

With the ignition off , disconnect the parking aid computer connector to check the insulation (against + 12 V),

continuity, and absence of interference resistance in the following connection:

Parking aid computer connector Rear left hand lights connector

Track 4 Track 2


AFTER REPAIR Repeat the conformity check from the start.

AAP X84 - 1.0





87F-22

Vdiag No.: 04

ET002

BUZZER CONTROL

NOTES There must be no faults present or stored.

ET002

remains OFF.

With the fault-finding tool's "main data" screen, make sure the parking aid system is really

on with status ET003 "Parking aid function" (parking aid switch light off).

If the status displayed is suspended or off, the system has to be reactivated by a one- or

three-second press. See the interpretation of status ET003.

With the fault-finding tool's configuration reading screen ("repair mode" menu), make

sure that the parking aid system is properly configured for the type of body on which it is

installed (LC005 "Vehicle identification": Mégane, automatic or manual transmission).

Reconfigure the computer if necessary with command CF005 "Vehicle identification".

With the vehicle near (20 to 150 cm) an obstacle, make sure the real distance matches

the value displayed by the fault-finding tool (PR001 to PR004).

If the distance is off or if the distance setting remains at 255 cm, make sure nothing is

interfering with the reading (adhesive, mud, snow etc. on the rear bumper).

ET002

ON but buzzer fails

to sound.

With the fault-finding tool's configuration reading screen, make sure the buzzer volumeis not turned down full (LC001: NONE).

If the volume setting is NONE, the computer has to be reconfigured with command

CF001 "Buzzer volume". Select the volume setting preferred by the customer (low,

medium, high, maximum).

With the ignition off , disconnect the parking-aid computer connector to check the

insulation, continuity and absence of interference resistance on the followingconnections:


Track 2 Track 1

Track 6 Track 2Repair if necessary (see vehicle diagram).

Measure the resistance between the buzzer's two tracks.

Replace the buzzer if its resistance is not approximately 48 ΩΩΩΩ.

If the above checks fail to solve the problem, replace the buzzer.


AAP X84 - 1.0





87F-23

Vdiag No.: 04

ET003

PARKING AID FUNCTION

NOTES Special notes:

If the parking aid system is suspended or off, the parking aid switch light is on.

This status indicates whether the parking aid system is on or off:

– ET003: READY This means that, when backing up, the parking aid system detects obstacles and

the buzzer sounds (the parking aid switch light is off).

– ET003: DETECTING This status is displayed when in reverse and the parking aid system detectsan obstacle.

– ET003: SUSPENDED This means the parking aid system is switched off (no detection possible).

The suspension is temporary because the parking aid system comes back on after the ignition is switched off

and on. The system can be suspended and turned back on manually with a brief press (one second) on the

parking aid switch.

– ET003: OFF This means the parking aid system is switched off (no detection possible). Thissuspension is permanent (turning the ignition off and on does not reactivate the system). The system can be

turned off and on with a long press (three seconds) on the parking aid switch.

If the status is not as specified, check for an earth on track A2 of the parking aid switch.


With the ignition off , disconnect the parking aid switch connector to check the insulation (against the earth and

+ 12 V), continuity, and absence of interference resistance in the following connection:

Parking aid switch connector Parking aid computer connector

Track B1 Track 12


If the connection just checked is okay (no open or short circuit), and there is an earth on track A2 of the switch

but the problem persists, check switch operation with an ohmmeter.

Switch not pressed: insulation between track A2 and B1.

Switch pressed: continuity between track A2 and B1.

Replace the parking aid switch if it fails to function as specified.


AAP X84 - 1.0




Fault finding - Interpretation of parameters 87F

87F-24

Vdiag No.: 04Fault finding - Interpretation of parameters

PR001

PR002

PR003

PR004

LEFT-HAND OUTER SENSOR DISTANCE

LEFT-HAND INNER SENSOR DISTANCE

RIGHT-HAND OUTER SENSOR DISTANCE

RIGHT-HAND INNER SENSOR DISTANCE

NOTES

Special notes:

Before tracking down a possible problem with these parameters, make sure no fault is

present or stored. If there is one, use the diagnostic procedure associated with the fault

detected by the fault-finding tool.

NOTE:The ultrasonic sensors are very fragile. Therefore, when removing the rear bumper, be

careful not to scratch them.

With the fault-finding tool's configuration reading screen ("repair mode" menu), make sure that the parking aid

system is properly configured for the type of body on which it is installed (LC005 "Vehicle identification":

Mégane, automatic or manual transmission). Reconfigure the computer if necessary with command CF005

"Vehicle identification".

With the vehicle near (20 to 150 cm) an obstacle, make sure the real distance matches the value displayed by

the fault-finding tool (PR001 to PR004).

If the distance is off or if the distance setting remains at 255 cm, make sure nothing is interfering with thereading (adhesive, mud, snow etc. on the rear bumper).

If the distances displayed by the sensors seem wrong or 255 cm is displayed steadily, check the condition of

the sensor(s). There must be no scratches on the detection component (outer metal part) of the sensors.

Replace the faulty sensor.

If the problem persists, apply the fault-finding procedure to the sensor whose distance reading is wrong (even

if the fault-finding tool does not report a fault).


AAP X84 - 1.0




Fault finding - Interpretation of parameters 87F

87F-25

Vdiag No.: 04

PR005

SHORTEST CALCULATED DISTANCE

NOTES

Special notes:

Before tracking down a possible problem with these parameters, make sure no fault is

present or stored. If there is one, use the diagnostic procedure associated with the fault

detected by the fault-finding tool.

NOTE:

The ultrasonic sensors are very fragile. Therefore, when removing the rear bumper, be

careful not to scratch them.

This parameter is an average calculated by the computer when an obstacle is

placed between two sensors.

Below 30 cm, the calculated distance is displayed as 0 cm (critical detection wheel with

intermittent or steady alarm).

With the fault-finding tool's configuration reading screen ("repair mode" menu), make sure that the parking aid

system is properly configured for the type of body on which it is installed (LC005 "Vehicle identification":

Mégane or Mégane 4X4, automatic or manual transmission). Reconfigure the computer if necessary with

command CF005 "Vehicle identification".

With the vehicle near (0 to 150 cm) an obstacle, see if the calculated distance is accurate.

If the distance is off or if the distance setting remains at 255 cm, make sure nothing is interfering with the

reading (adhesive, mud, snow etc. on the rear bumper).

If the calculated distance is still off or displaying 255 cm steadily, check the condition of the sensors, which

must not have any scratches on the detection component (outer metal part).

Replace the faulty sensor.

If the problem persists, apply the fault-finding procedure to the sensor whose distance reading is wrong (even

if the fault-finding tool does not report a fault).


AAP X84 - 1.0




Fault finding - Customer complaints 87F

87F-26

Vdiag No.: 04Fault finding - Customer complaints

NOTES Only consult the customer complaints after a complete check using the diagnostic tool.

NO DIALOGUE WITH THE COMPUTER CHART 1

NO SOUND SIGNAL CHART 2

CONSTANT SOUND SIGNAL

(no obstacle detection)CHART 3

AAP X84 - 1.0




Fault finding - Fault finding chart 87F

87F-27

Vdiag No.: 04Fault finding - Fault finding chart

CHART 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 socket (wiring in good condition),

– the injection, engine and passenger compartment fuses.

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

With the ignition off, disconnect the parking-aid computer connector to check the insulation, continuity and


Parking aid computer connector

Track 1 + Before ignition (see vehicle diagram)

Track 3 Earth

Track 8 track 7 of the diagnostic socket (line K)


AFTER REPAIR Perform a complete check using the diagnostic tool.

AAP X84 - 1.0





87F-28

Vdiag No.: 04

CHART 2 No sound signal

NOTES Only investigate this customer complaint after a full check with the diagnostic tool

(no faults must be present or stored).

At the fault-finding tool's main data screen, make sure the

parking aid system is really on. Status ET003 "Parking aid

function" must be "READY" (and the red light on the

parking aid switch must be off).

Is status ET003 okay?

Yes

At the fault-finding tool's main data screen, make sure

reverse really is engaged. Status ET001 "Reverse

engaged" must be "YES". Also make sure the reversing

lights really come on when reverse is engaged.

Is status ET001 okay?

Yes

At the fault-finding tool's read configuration screen, make

sure the buzzer volume is not turned down completely

(setting LC001 "Buzzer volume" must not be NONE).

Is setting LC001 "NONE"?

No

Check the connection and condition of the connector

on the buzzer (located in the left rear wing).Replace the connector if necessary.

No

Turn on the parking aid system

by pressing on the switch for 1

or 3 seconds (the red light

should go out).

NOTE:

For more details about system

activation, see the interpretation

of status ET003.

No Apply the fault-finding

procedure for status ET001.

Yes

Reconfigure the buzzer volume

with the fault-finding tool

(command CF001 "Buzzer

volume").

AFTER REPAIR Check that the system is operating correctly.

AAP X84 - 1.0





87F-29

Vdiag No.: 04

CHART 2

CONTINUED

With the fault-finding tool's parameter screen (PR001,

PR002, PR003, PR004), make sure the proximity

sensors really detect obstacles (between 20 and

150 cm).

Do the parameters specified above display

distances (with an obstacle in front of the rear

bumper)?

Yes

Place an obstacle in front of the rear bumper to have the tool display a distance reading. During the detection,

make sure the buzzer has a proper power supply by taking a reading between track 1 and track 2 on the

buzzer.

During this test, is the buzzer receiving power?

Yes No

Measure the resistance between the buzzer's

two tracks.

Replace the buzzer if its resistance is not

approximately 48 ΩΩΩΩ.

With the ignition off , disconnect the parking-aid computer

connector to check the insulation, continuity and

absence of interference resistance on the following

connections:

Is the fault still present? Parking aid computer Buzzer

Track 2 Track 2

Track 6 Track 1

Repair if necessary (see vehicle diagram).yes No

Is the fault still present?Replace the alarm.

No yes

End of fault finding. Contact your Techline.

No

Apply the fault-finding

procedure for parameters

(PR001, PR002, PR003,

PR004).


AAP X84 - 1.0




Fault finding - Fault finding chart 87FVdiag No.: 04

CHART 3 Steady alarm (no obstacle detection)

NOTES Only investigate this customer complaint after a full check with the diagnostic tool

(no faults must be present or stored).

With the ignition off , disconnect the parking-aid computer

connector to check the insulation, continuity and absence of

interference resistance on the following connections:



NOTE:

The line running from track 6 of the computer must be insulated

against + 12 V and the one from track 2 of the computer must be

insulated against the earth.


Is the fault still present?

Yes

With no obstacle less than 150 cm in front of the rear bumper, make sure the distance reading on the fault-

finding tool is 255 cm "out of range" (PR001, PR002, PR003, PR004).

If those parameters display a setting even though there is no obstacle in front of the rear bumper, make sure

nothing is interfering with the reading (adhesive, mud, snow etc. on the rear bumper).


End of fault finding.

NoEnd of fault finding.


Documents

Defecte Senzori de Parcare