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501-16-1 501-16-1Wipers and Washers
DIAGNOSIS AND TESTING
High-Speed Windshield WipersWipers and WashersRefer to Wiring Diagrams Cell 81, Wipers and When the multi-function switch is set to theWashers for schematic and connector information. HIGH-speed position, it supplies ground to theRefer to Wiring Diagrams Cell 82, Liftgate high/low-speed relay coil and the run/park relayWiper/Washer for schematic and connector coil, which causes the windshield wiper motor toinformation. operate at high speed. During HIGH-speed operation
only, both the high/low-speed relay coil ground andSpecial Tool(s)
the run/park relay coil ground are controlled directly
by the multi-function switch. This differs from73III Automotive Meter105-R0057 or equivalent LOW-speed or INTERMITTENT operation when
the run/park relay coil is controlled by the
microprocessor. When the switch is placed in the
OFF position, the motor continues to operate until
the motor returns to the PARK position and the
internal Hall-effect sensor senses the motor magnet.
The output to the run/park relay deactivates theFlex Probe Kit105-R025B or equivalent relay and disconnects the voltage to the motor.
Since the high/low relay coil and the run/park relay
coil are both controlled by a hard-wired circuit to
the multi-function switch, the windshield wipers will
still operate in high-speed mode if the internal
windshield wiper module fails, but will not
automatically park when the multi-function switch isPrinciples of Operation
turned to the OFF position.The wiper motors receive inputs from the following:
Low-Speed Windshield Wipers• multi-function switch
When the multi-function switch is set to the• ABS control module vehicle speed signal (VSS)
LOW-speed position, it supplies ground to the• ignition switch internal windshield wiper motor module low-speed
input and the windshield wiper motor operates at• power distribution junction box (PDJB)low speed. During LOW-speed operation, the
The following components are integrated in theinternal run/park relay is activated by the
wiper motors:microprocessor and supplies 12 volts to the
low-speed brush of the windshield wiper motor. The• windshield wiper motor modulerun/park relay coil ground is controlled by the• High/Low speed relayinternal windshield wiper motor module based on
• run/park sense (Hall effect) inputs received from the multi-function switch.
• washer pump relay When the switch is placed in the OFF position, the
motor continues to operate until the motor returns to
the PARK position and the internal Hall-effect
sensor senses the motor magnet. The output to the
run/park relay deactivates the relay and disconnects
the voltage to the motor.
Copyright 2003, Ford Motor CompanyLast updated: 2/9/2007 2004 Excursion, F-Super Duty 250-550, 12/2004
501-16-2 501-16-2Wipers and Washers
DIAGNOSIS AND TESTING (Continued)
Washer SystemSince the run/park relay is controlled by the internal
windshield wiper motor microprocessor, the wipers When windshield wash is selected on thewill only operate in high-speed mode if the internal multi-function switch, the windshield wiper motorwindshield wiper motor module fails, and will not module activates its integral washer relay, whichautomatically park when the multi-function switch sends voltage to the washer pump to direct fluid tois turned to the OFF position. This is due to the the windshield.run/park and high/low relay coils being directly
Washer System — Excursionhard-wired to the switch in high speed. The diode
prevents current flow through the high/low relay The front and rear washer system share the samecoil so the relay remains in the normally closed washer reservoir and washer pump. The front andLOW-speed position. rear wiper motor modules each contain an integral
washer relay that supplies a ground path for theIntermittent-Speed Windshield Wipers
washer pump whenever they are inactive. WhenWhen the multi-function switch is set to the windshield wash is selected on the multi-functionINTERMITTENT position(s), it supplies ground to switch, the windshield wiper motor module activatesthe windshield wiper motor module inputs and the its integral washer relay, which sends voltage to thewindshield wiper motor operates in intermittent washer pump to direct fluid to the windshield.mode. During INTERMITTENT operation, the When rear wash is selected on the multi-functionwindshield wiper motor activates the run/park relay switch, the rear wiper motor module activates itscoil which sends voltage through the high/low relay. integral washer relay to send voltage to the washerThe high/low relay remains deactivated, supplying pump to direct fluid to the rear window.the voltage to the low-speed brush of the windshield
Software Safe Modewiper motor. The windshield motor continues to
operate until the internal Hall-effect sensor senses The windshield wiper motor defaults to softwarethe magnet (PARK position) and deactivates the safe mode when the run/park sensor does not senserun/park relay, which disconnects voltage from the the Hall-effect magnet inside the wiper motor. Thiswiper motor. The windshield wipers remain parked can be caused by an obstruction of the windshielduntil the windshield wiper motor module completes wipers, a binding linkage or loss of the Hall sensora time-out and then repeats the intermittent signal. The motor continues to operate in awindshield wiper cycle. high/low-speed condition, and when turned off, the
wipers immediately park on the windshield. IfIntermittent Rear Window Wiper System —
necessary, the wipers can be turned on and off untilExcursionthey return to the PARK position.
When the multi-function switch is set to the rear
INTERMITTENT position(s), it supplies ground to
the rear window wiper motor module input and the
wiper operates in intermittent mode. During
INTERMITTENT operation, the rear wiper motor
momentarily activates the rear window wiper relay
(internal), which sends voltage to the motor. Once
the rear window wiper motor is activated, the
internal run/park switch connects voltage to the
motor, keeping it operating. When the rear window
wiper motor returns to the PARK position, the
run/park switch disconnects voltage internally from
the wiper motor input, reconnecting it to the rear
window wiper motor module output. The rear
window wiper remains parked until the rear window
wiper motor module completes a time-out and then
repeats the cycle.
2004 Excursion, F-Super Duty 250-550, 12/2004
501-16-3 501-16-3Wipers and Washers
DIAGNOSIS AND TESTING (Continued)
Windshield Wiper Circuit Function Table
Multi-FunctionSwitch Circuit 589 Circuit 61 Circuit 56 Circuit 58
Position (OG) (YE/RD) (DB/OG) (WH) Circuit 63 (RD)
OFF OPEN OPEN OPEN OPEN OPEN
INT 1 OPEN OPEN OPEN OPEN GROUND
INT 2 OPEN OPEN OPEN GROUND GROUND
INT 3 OPEN OPEN OPEN GROUND OPEN
INT 4 OPEN OPEN GROUND GROUND OPEN
INT 5 OPEN OPEN GROUND OPEN OPEN
LOW OPEN OPEN GROUND OPEN GROUND
HIGH OPEN GROUND GROUND OPEN GROUND
WASH GROUND OPEN/GROUND OPEN/GROUND OPEN/GROUND OPEN/GROUND
Rear Wiper Circuit Function Table (Excursion Visual Inspection Chartonly)
Mechanical ElectricalMulti-
• Windshield washer • CJB fuse: Function
hoses — 21 (25A) (ExcursionSwitch Circuit 993 Circuit 1300
• Wiper linkage only)Position (BN/WH) (VT)
• Multi-function switch — 33 (15A)OFF OPEN OPEN — 48 (10A) (Excursion
only)INT 1 OPEN GROUND— 106 (30A)
INT 2 GROUND GROUND • Circuitry• Windshield wiper motorWASH GROUND OPEN
3. If an obvious cause for an observed or reportedInspection and Verification
concern is found, correct the cause (if possible)1. Verify the customer concern by operating the before proceeding to the Symptom Chart.
system.
2. Visually inspect the following for obvious signs
of mechanical or electrical damage.
Symptom Chart
Symptom Chart
Condition Possible Sources Action
• The windshield wipers are • Multi-function switch • GO to Pinpoint Test A.inoperative • Circuitry
• Ignition switch• Windshield wiper motor
• The rear window wiper is • Multi-function switch • GO to Pinpoint Test B.inoperative (Excursion only) • Circuitry
• Ignition switch• Rear window wiper motor
• The windshield wipers stay • Windshield wiper motor • GO to Pinpoint Test C.on continuously • Multi-function switch
• Circuitry
• The rear window wiper stays • Rear window wiper motor • GO to Pinpoint Test D.on continuously (Excursion • Multi-function switchonly) • Circuitry
2004 Excursion, F-Super Duty 250-550, 12/2004
501-16-4 501-16-4Wipers and Washers
DIAGNOSIS AND TESTING (Continued)
Symptom Chart (Continued)
Condition Possible Sources Action
• The high/low windshield • Multi-function switch • GO to Pinpoint Test E.wiper speeds do not operate • Circuitrycorrectly • Windshield wiper motor
• The low rear window wiper • Multi-function switch • GO to Pinpoint Test F.speed does not operate • Circuitrycorrectly (Excursion only) • Rear window wiper motor
• The intermittent windshield • Multi-function switch • GO to Pinpoint Test G.wiper speed does not operate • Circuitrycorrectly • Windshield wiper motor
• The intermittent rear window • Multi-function switch • GO to Pinpoint Test H.wiper speed does not operate • Circuitrycorrectly (Excursion only) • Rear window wiper motor
• The windshield wipers do not • Multi-function switch • GO to Pinpoint Test I.operate correctly in the MIST • Circuitryposition • Washer pump
• Windshield wiper motor
• The rear window wiper wash • Multi-function switch • GO to Pinpoint Test J.and wipe function does not • Circuitryoperate • Washer pump
• Rear window wiper motor
• The washer pump is • Washer pump • GO to Pinpoint Test K.inoperative • Multi-function switch
• Windshield wiper motor• Rear window wiper motor• Circuitry
• The windshield wiper speed • Windshield wiper motor • GO to Pinpoint Test L.dependent interval mode does • Circuitrynot operate correctly • ABS module
• The wipers will not park at • Windshield wiper motor • REFER to Wiper Blade andcorrect position • Rear window wiper motor Pivot Arm Adjustment in this
• Pivot arm adjustment section.• Linkage
Pinpoint Tests
PINPOINT TEST A: THE WINDSHIELD WIPERS ARE INOPERATIVE
Test Step Result / Action to Take
A1 CHECK CIRCUITS 65 (DG) AND 1002 (BK/PK) FOR VOLTAGE
• Key in OFF position.• Disconnect: Windshield Wiper Motor C125.• Key in ON position.
(Continued)
2004 Excursion, F-Super Duty 250-550, 12/2004
501-16-5 501-16-5Wipers and Washers
DIAGNOSIS AND TESTING (Continued)
PINPOINT TEST A: THE WINDSHIELD WIPERS ARE INOPERATIVE (Continued)
Test Step Result / Action to Take
A1 CHECK CIRCUITS 65 (DG) AND 1002 (BK/PK) FOR VOLTAGE(Continued)
• Measure the voltage between windshield wiper C125 pin 5,circuit 65 (DG), harness side and ground; and betweenwindshield wiper motor C125 pin 8, circuit 1002 (BK/PK),harness side and ground.
YesGO to A2.
NoVERIFY CJB fuses 33 (15A) and 106(30A) are OK, If OK, REPAIR the circuit(s)in question. TEST the system for normal
• Are the voltages greater than 10 volts? operation.
A2 CHECK CIRCUITS 57 (BK) AND 676 (PK/OG) FOR OPENS
• Key in OFF position.• Measure the resistance between windshield wiper C125 pin 6,
circuit 57 (BK), harness side and ground; and betweenwindshield wiper motor C125 pin 3, circuit 676 (PK/OG), harnessside and ground.
YesGO to A3.
NoREPAIR the circuit(s) in question. TEST
• Are the resistances less than 5 ohms? the system for normal operation.
A3 CHECK THE MULTI-FUNCTION SWITCH
• Disconnect: Multi-function Switch C202b. Yes• Carry out the multi-function switch component test. Refer to GO to A4.
Wiring Diagrams Cell 149 for component testing. No• Did the multi-function switch pass the component test? INSTALL a new multi-function switch.
REFER to Section 211-05.
(Continued)
2004 Excursion, F-Super Duty 250-550, 12/2004
501-16-6 501-16-6Wipers and Washers
DIAGNOSIS AND TESTING (Continued)
PINPOINT TEST A: THE WINDSHIELD WIPERS ARE INOPERATIVE (Continued)
Test Step Result / Action to Take
A4 CHECK CIRCUIT 57 (BK) FOR OPEN
• Measure the resistance between C202b pin 6, circuit 57 (BK),harness side and ground.
YesGO to A5.
NoREPAIR the circuit. TEST the system for
• Is the resistance less than 5 ohms? normal operation.
A5 CHECK CIRCUITS 56 (DB/OG), 58 (WH), 61 (YE/RD), AND 63(RD) FOR OPENS
• Using the following table, measure the resistance between themulti-function switch C202b harness side and the windshieldwiper motor C125 harness side:
Multi-function Switch C202b Windshield Wiper Motor C125
pin 2, circuit 56 (DB/OG) pin 10, circuit 56 (DB/OG)
pin 3, circuit 58 (WH) pin 11, circuit 58 (WH)
pin 4, circuit 61 (YE/RD) pin 1, circuit 61 (YE/RD)
pin 1, circuit 63 (RD) pin 9, circuit 63 (RD)
YesGO to A6.
NoREPAIR the circuit(s) in question. TEST
• Is the resistance less than 5 ohms? the system for normal operation.
A6 CHECK FOR CORRECT WIPER MOTOR OPERATION
• Disconnect all wiper motor connectors. Yes• Check for: INSTALL a new windshield wiper motor.
— corrosion. REFER to Windshield Wiper Motor in this— pushed-out pins. section.
• Connect all wiper motor connectors and make sure they seat Nocorrectly. The system is operating correctly at this
• Operate the system and verify the concern is still present. time. Concern may have been caused by• Is the concern still present? a loose or corroded connector. TEST the
system for normal operation.
2004 Excursion, F-Super Duty 250-550, 12/2004
501-16-7 501-16-7Wipers and Washers
DIAGNOSIS AND TESTING (Continued)
PINPOINT TEST B: THE REAR WIPER IS INOPERATIVE (EXCURSION ONLY)
Test Step Result / Action to Take
B1 CHECK CIRCUITS 297 (BK/LG) AND 406 (BN/WH) FORVOLTAGE
• Key in OFF position.• Disconnect: Rear Wiper Motor C476.• Key in ON position.• Measure the voltage between rear wiper motor C476 pin 3,
circuit 297 (BK/LG), harness side and ground; and between rearwiper motor C476 pin 4, circuit 406 (BN/WH), harness side andground.
YesGO to B2.
NoREPAIR the circuit(s) in question. TEST
• Are the voltages greater than 10 volts? the system for normal operation.
B2 CHECK CIRCUIT 57 (BK) FOR OPEN
• Key in OFF position.• Measure the resistance between rear wiper C476 pin 1, circuit
57 (BK), harness side and ground.
YesGO to B3.
NoREPAIR the circuit(s) in question. TEST
• Is the resistance less than 5 ohms? the system for normal operation.
B3 CHECK THE MULTI-FUNCTION SWITCH
• Key in OFF position. Yes• Disconnect: Multi-function Switch C202b. GO to B4.• Carry out the multi-function switch component test. Refer to No
Wiring Diagrams Cell 149 for component testing. INSTALL a new multi-function switch.• Did the multi-function switch pass the component test? REFER to Section 211-05.
(Continued)
2004 Excursion, F-Super Duty 250-550, 12/2004
501-16-8 501-16-8Wipers and Washers
DIAGNOSIS AND TESTING (Continued)
PINPOINT TEST B: THE REAR WIPER IS INOPERATIVE (EXCURSION ONLY) (Continued)
Test Step Result / Action to Take
B4 CHECK CIRCUIT 57 (BK) FOR OPEN
• Measure the resistance between C202b pin 6, circuit 57 (BK),harness side and ground.
YesGO to B5.
NoREPAIR the circuit. TEST the system for
• Is the resistance less than 5 ohms? normal operation.
B5 CHECK CIRCUITS 993 (BN/WH) AND 1300 (PK) FOR OPENS
• Measure the resistance between the multi-function switch C202bpin 11, circuit 993 (BN/WH) harness side and the rear wipermotor C476 pin 6, circuit 993 (BN/WH) harness side: andbetween the multi-function switch C202b pin 2, circuit 1300 (PK)harness side and the rear wiper motor C476 pin 7, circuit 1300(PK) harness side.
YesGO to B6.
NoREPAIR the circuit(s) in question. TEST
• Are the resistances less than 5 ohms? the system for normal operation.
B6 CHECK FOR CORRECT WIPER MOTOR OPERATION
• Disconnect all wiper motor connectors. Yes• Check for: INSTALL a new rear window wiper motor.
— corrosion. REFER to Rear Window Wiper Motor in— pushed-out pins. this section.
• Connect all wiper motor connectors and make sure they seat Nocorrectly. The system is operating correctly at this
• Operate the system and verify the concern is still present. time. Concern may have been caused by• Is the concern still present? a loose or corroded connector. TEST the
system for normal operation.
PINPOINT TEST C: THE WINDSHIELD WIPERS STAY ON CONTINUOUSLY
Test Step Result / Action to Take
C1 CHECK THE MULTI-FUNCTION SWITCH
• Key in OFF position. Yes• Disconnect: Multi-function Switch C202b. GO to C2.• Carry out the multi-function switch component test. Refer to No
Wiring Diagrams Cell 149 for component testing. INSTALL a new multi-function switch.• Did the multi-function switch pass the component test? REFER to Section 211-05.
(Continued)
2004 Excursion, F-Super Duty 250-550, 12/2004
501-16-9 501-16-9Wipers and Washers
DIAGNOSIS AND TESTING (Continued)
PINPOINT TEST C: THE WINDSHIELD WIPERS STAY ON CONTINUOUSLY (Continued)
Test Step Result / Action to Take
C2 CHECK CIRCUIT 57 (BK) FOR OPEN
• Measure the resistance between C202b pin 6, circuit 57 (BK),harness side and ground.
YesGO to C3.
NoREPAIR the circuit. TEST the system for
• Is the resistance less than 5 ohms? normal operation.
C3 CHECK CIRCUITS 56 (DB/OG), 58 (WH), 61 (YE/RD), AND 63(RD) FOR SHORTS
• Disconnect: Windshield Wiper Motor C125.• Using the following table, measure the resistance between the
windshield wiper motor C125 harness side and ground:
Windshield Wiper Motor C125 Ground
pin 10, circuit 56 (DB/OG) ground
pin 11, circuit 58 (WH) ground
pin 1, circuit 61 (YE/RD) ground
pin 9, circuit 63 (RD) ground
YesGO to C4.
NoREPAIR the circuit(s) in question. TEST
• Is the resistance greater than 10,000 ohms? the system for normal operation.
C4 CHECK FOR CORRECT WIPER MOTOR OPERATION
• Disconnect all wiper motor connectors. Yes• Check for: INSTALL a new windshield wiper motor.
— corrosion. REFER to Windshield Wiper Motor in this— pushed-out pins. section.
• Connect all wiper motor connectors and make sure they seat Nocorrectly. The system is operating correctly at this
• Operate the system and verify the concern is still present. time. Concern may have been caused by• Is the concern still present? a loose or corroded connector. TEST the
system for normal operation.
2004 Excursion, F-Super Duty 250-550, 12/2004
501-16-10 501-16-10Wipers and Washers
DIAGNOSIS AND TESTING (Continued)
PINPOINT TEST D: THE REAR WIPER STAYS ON CONTINUOUSLY (EXCURSION ONLY)
Test Step Result / Action to Take
D1 CHECK THE MULTI-FUNCTION SWITCH
• Key in OFF position. Yes• Disconnect: Multi-function Switch C202b. GO to D2.• Carry out the multi-function switch component test. Refer to No
Wiring Diagrams Cell 149 for component testing. INSTALL a new multi-function switch.• Did the multi-function switch pass the component test? REFER to Section 211-05.
D2 CHECK CIRCUIT 57 (BK) FOR OPEN
• Measure the resistance between C202b pin 5, circuit 57 (BK),harness side and ground.
YesGO to D3.
NoREPAIR the circuit. TEST the system for
• Is the resistance less than 5 ohms? normal operation.
D3 CHECK CIRCUITS 993 (BN/WH) AND 1300 (PK) FOR SHORTS
• Disconnect: Rear Window Wiper Motor C476.• Measure the resistance between the rear window wiper motor
C476 pin 6, circuit 993 (BN/WH), harness side and ground; andbetween the rear wiper motor C476 pin 7, circuit 1300 (PK),harness side and ground.
YesGO to D4.
NoREPAIR the circuit(s) in question. TEST
• Are the resistances greater than 10,000 ohms? the system for normal operation.
D4 CHECK FOR CORRECT WIPER MOTOR OPERATION
• Disconnect all wiper motor connectors. Yes• Check for: INSTALL a new rear window wiper motor.
— corrosion. REFER to Rear Window Wiper Motor in— pushed-out pins. this section.
• Connect all wiper motor connectors and make sure they seat Nocorrectly. The system is operating correctly at this
• Operate the system and verify the concern is still present. time. Concern may have been caused by• Is the concern still present? a loose or corroded connector. TEST the
system for normal operation.
2004 Excursion, F-Super Duty 250-550, 12/2004
501-16-11 501-16-11Wipers and Washers
DIAGNOSIS AND TESTING (Continued)
PINPOINT TEST E: THE HIGH/LOW WINDSHIELD WIPER SPEEDS DO NOT OPERATE CORRECTLY
Test Step Result / Action to Take
E1 CHECK THE MULTI-FUNCTION SWITCH
• Key in OFF position. Yes• Disconnect: Multi-function Switch C202b. GO to E2.• Carry out the multi-function switch component test. Refer to No
Wiring Diagrams Cell 149 for component testing. INSTALL a new multi-function switch.• Did the multi-function switch pass the component test? REFER to Section 211-05. TEST the
system for normal operation.
E2 CHECK CIRCUIT 57 (BK) FOR OPEN
• Measure the resistance between C202b pin 6, circuit 57 (BK),harness side and ground.
YesGO to E3.
NoREPAIR the circuit. TEST the system for
• Is the resistance less than 5 ohms? normal operation.
E3 CHECK CIRCUITS 56 (DB/OG), 61 (YE/RD), AND 63 (RD) FOROPENS
• Disconnect: Windshield Wiper Motor C125.• Using the following table, measure the resistance between the
multi-function switch C202b harness side and the windshieldwiper motor C125 harness side:
Multi-function Switch C202b Windshield Wiper Motor C125
pin 2, circuit 56 (DB/OG) pin 10, circuit 56 (DB/OG)
pin 4, circuit 61 (YE/RD) pin 1, circuit 61 (YE/RD)
pin 1, circuit 63 (RD) pin 9, circuit 63 (RD)
YesGO to E4.
NoREPAIR the circuit(s) in question. TEST
• Is the resistance less than 5 ohms? the system for normal operation.
(Continued)
2004 Excursion, F-Super Duty 250-550, 12/2004
501-16-12 501-16-12Wipers and Washers
DIAGNOSIS AND TESTING (Continued)
PINPOINT TEST E: THE HIGH/LOW WINDSHIELD WIPER SPEEDS DO NOT OPERATE CORRECTLY(Continued)
Test Step Result / Action to Take
E4 CHECK FOR CORRECT WIPER MOTOR OPERATION
• Disconnect all wiper motor connectors. Yes• Check for: INSTALL a new windshield wiper motor.
— corrosion. REFER to Windshield Wiper Motor in this— pushed-out pins. section.
• Connect all wiper motor connectors and make sure they seat Nocorrectly. The system is operating correctly at this
• Operate the system and verify the concern is still present. time. Concern may have been caused by• Is the concern still present? a loose or corroded connector. TEST the
system for normal operation.
PINPOINT TEST F: THE LOW REAR WINDOW WIPER SPEED DOES NOT OPERATE CORRECTLY
Test Step Result / Action to Take
F1 CHECK THE MULTI-FUNCTION SWITCH
• Key in OFF position. Yes• Disconnect: Multi-function Switch C202b. GO to F2.• Carry out the multi-function switch component test. Refer to No
Wiring Diagrams Cell 149 for component testing. INSTALL a new multi-function switch.• Did the multi-function switch pass the component test? REFER to Section 211-05.
F2 CHECK CIRCUIT 57 (BK) FOR OPEN
• Measure the resistance between C202b pin 6, circuit 57 (BK),harness side and ground.
YesGO to F3.
NoREPAIR the circuit. TEST the system for
• Is the resistance less than 5 ohms? normal operation.
F3 CHECK CIRCUITS 993 (BN/WH) AND 1300 (PK) FOR OPENS
• Disconnect: Rear Window Wiper Motor C476.
(Continued)
2004 Excursion, F-Super Duty 250-550, 12/2004
501-16-13 501-16-13Wipers and Washers
DIAGNOSIS AND TESTING (Continued)
PINPOINT TEST F: THE LOW REAR WINDOW WIPER SPEED DOES NOT OPERATE CORRECTLY(Continued)
Test Step Result / Action to Take
F3 CHECK CIRCUITS 993 (BN/WH) AND 1300 (PK) FOR OPENS(Continued)
• Measure the resistance between the multi-function switch C202bpin 11, circuit 993 (BN/WH) harness side and the rear wipermotor C476 pin 6, circuit 993 (BN/WH) harness side; andbetween the multi-function switch C202b pin 12, circuit 1300(PK) harness side and the rear wiper motor C476 pin 7, circuit1300 (PK) harness side.
YesGO to F4.
NoREPAIR the circuit(s) in question. TEST
• Are the resistances less than 5 ohms? the system for normal operation.
F4 CHECK FOR CORRECT WIPER MOTOR OPERATION
• Disconnect all wiper motor connectors. Yes• Check for: INSTALL a new rear window wiper motor.
— corrosion. REFER to Rear Window Wiper Motor in— pushed-out pins. this section.
• Connect all wiper motor connectors and make sure they seat Nocorrectly. The system is operating correctly at this
• Operate the system and verify the concern is still present. time. Concern may have been caused by• Is the concern still present? a loose or corroded connector. TEST the
system for normal operation.
PINPOINT TEST G: THE INTERMITTENT WINDSHIELD WIPER SPEED DOES NOT OPERATECORRECTLY
Test Step Result / Action to Take
G1 CHECK THE MULTI-FUNCTION SWITCH
• Key in OFF position. Yes• Disconnect: Multi-function Switch C202b. GO to G2.• Carry out the multi-function switch component test. Refer to No
Wiring Diagrams Cell 149 for component testing. INSTALL a new multi-function switch.• Did the multi-function switch pass the component test? REFER to Section 211-05. TEST the
system for normal operation.
(Continued)
2004 Excursion, F-Super Duty 250-550, 12/2004
501-16-14 501-16-14Wipers and Washers
DIAGNOSIS AND TESTING (Continued)
PINPOINT TEST G: THE INTERMITTENT WINDSHIELD WIPER SPEED DOES NOT OPERATECORRECTLY (Continued)
Test Step Result / Action to Take
G2 CHECK CIRCUIT 57 (BK) FOR OPEN
• Measure the resistance between C202b pin 6, circuit 57 (BK),harness side and ground.
YesGO to G3.
NoREPAIR the circuit. TEST the system for
• Is the resistance less than 5 ohms? normal operation.
G3 CHECK CIRCUITS 56 (DB/OG), 61 (YE/RD), AND 63 (RD) FOROPENS
• Disconnect: Windshield Wiper Motor C125.• Using the following table, measure the resistance between the
multi-function switch C202b harness side and the windshieldwiper motor C125 harness side:
Multi-function Switch C202b Windshield Wiper Motor C125
pin 2, circuit 56 (DB/OG) pin 10, circuit 56 (DB/OG)
pin 4, circuit 61 (YE/RD) pin 1, circuit 61 (YE/RD)
pin 1, circuit 63 (RD) pin 9, circuit 63 (RD)
pin 3, circuit 58 (WH) pin 11, circuit 58 (WH)
YesGO to G4.
NoREPAIR the circuit(s) in question. TEST
• Is the resistance less than 5 ohms? the system for normal operation.
G4 CHECK FOR CORRECT WIPER MOTOR OPERATION
• Disconnect all wiper motor connectors. Yes• Check for: INSTALL a new windshield wiper motor.
— corrosion. REFER to Windshield Wiper Motor in this— pushed-out pins. section.
• Connect all wiper motor connectors and make sure they seat Nocorrectly. The system is operating correctly at this
• Operate the system and verify the concern is still present. time. Concern may have been caused by• Is the concern still present? a loose or corroded connector. TEST the
system for normal operation.
2004 Excursion, F-Super Duty 250-550, 12/2004
501-16-15 501-16-15Wipers and Washers
DIAGNOSIS AND TESTING (Continued)
PINPOINT TEST H: THE INTERMITTENT REAR WIPER SPEED DOES NOT OPERATE CORRECTLY
Test Step Result / Action to Take
H1 CHECK THE MULTI-FUNCTION SWITCH
• Key in OFF position. Yes• Disconnect: Multi-function Switch C202b. GO to H2.• Carry out the multi-function switch component test. Refer to No
Wiring Diagrams Cell 149 for component testing. INSTALL a new multi-function switch.• Did the multi-function switch pass the component test? REFER to Section 211-05.
H2 CHECK CIRCUIT 57 (BK) FOR OPEN
• Measure the resistance between C202b pin 6, circuit 57 (BK),harness side and ground.
YesGO to H3.
NoREPAIR the circuit. TEST the system for
• Is the resistance less than 5 ohms? normal operation.
H3 CHECK CIRCUITS 993 (BN/WH) AND 1300 (PK) FOR OPENS
• Disconnect: Rear Window Wiper Motor C476.• Measure the resistance between the multi-function switch C202b
pin 11, circuit 993 (BN/WH) harness side and the rear wipermotor C476 pin 6, circuit 993 (BN/WH) harness side; andbetween the multi-function switch C202b pin 12, circuit 1300(PK) harness side and the rear wiper motor C476 pin 7, circuit1300 (PK) harness side.
YesGO to H4.
NoREPAIR the circuit(s) in question. TEST
• Are the resistances less than 5 ohms? the system for normal operation.
H4 CHECK FOR CORRECT WIPER MOTOR OPERATION
• Disconnect all wiper motor connectors. Yes• Check for: INSTALL a new rear window wiper motor.
— corrosion. REFER to Rear Window Wiper Motor in— pushed-out pins. this section.
• Connect all wiper motor connectors and make sure they seat Nocorrectly. The system is operating correctly at this
• Operate the system and verify the concern is still present. time. Concern may have been caused by• Is the concern still present? a loose or corroded connector. TEST the
system for normal operation.
2004 Excursion, F-Super Duty 250-550, 12/2004
501-16-16 501-16-16Wipers and Washers
DIAGNOSIS AND TESTING (Continued)
PINPOINT TEST I: THE WINDSHIELD WIPERS DO NOT OPERATE CORRECTLY IN THE MIST POSITION
Test Step Result / Action to Take
I1 CHECK THE MULTI-FUNCTION SWITCH
• Key in OFF position. Yes• Disconnect: Multi-function Switch C202b. GO to I2.• Carry out the multi-function switch component test. Refer to No
Wiring Diagrams Cell 149 for component testing. INSTALL a new multi-function switch.• Did the multi-function switch pass the component test? REFER to Section 211-05.
I2 CHECK CIRCUIT 57 (BK) FOR OPEN
• Measure the resistance between C202b pin 6, circuit 57 (BK),harness side and ground.
YesGO to I3.
NoREPAIR the circuit. TEST the system for
• Is the resistance less than 5 ohms? normal operation.
I3 CHECK CIRCUIT 589 (OG) FOR OPEN
• Disconnect: Windshield Wiper Motor C125.• Measure the resistance between C202b pin 5, circuit 589 (OG),
harness side and C125 pin 12, circuit 589 (OG), harness side.
YesGO to Pinpoint Test K.
NoREPAIR the circuit. TEST the system for
• Is the resistance less than 5 ohms? normal operation.
PINPOINT TEST J: THE REAR WINDOW WIPER WASH AND WIPE FUNCTION DOES NOT OPERATE
Test Step Result / Action to Take
J1 CHECK THE MULTI-FUNCTION SWITCH
• Key in OFF position. Yes• Disconnect: Multi-function Switch C202b. GO to J2.• Carry out the multi-function switch component test. Refer to No
Wiring Diagrams Cell 149 for component testing. INSTALL a new multi-function switch.• Did the multi-function switch pass the component test? REFER to Section 211-05.
(Continued)
2004 Excursion, F-Super Duty 250-550, 12/2004
501-16-17 501-16-17Wipers and Washers
DIAGNOSIS AND TESTING (Continued)
PINPOINT TEST J: THE REAR WINDOW WIPER WASH AND WIPE FUNCTION DOES NOT OPERATE(Continued)
Test Step Result / Action to Take
J2 CHECK CIRCUIT 57 (BK) FOR OPEN
• Measure the resistance between C202b pin 6, circuit 57 (BK),harness side and ground.
YesGO to J3.
NoREPAIR the circuit. TEST the system for
• Is the resistance less than 5 ohms? normal operation.
J3 CHECK CIRCUIT 993 (BN/WH) FOR OPEN
• Key in OFF position.• Disconnect: Rear Window Wiper Motor C476.• Measure the resistance between C202b pin 11, circuit 589 (OG),
harness side and C476 pin 6, circuit 993 (BN/WH), harnessside.
YesGO to Pinpoint Test K.
NoREPAIR the circuit. TEST the system for
• Is the resistance less than 5 ohms? normal operation.
PINPOINT TEST K: THE WASHER PUMP IS IN OPERATIVE
Test Step Result / Action to Take
K1 CHECK THE MULTI-FUNCTION SWITCH
• Key in OFF position. Yes• Disconnect: Multi-function Switch C202b. GO to K2.• Carry out the multi-function switch component test. Refer to No
Wiring Diagrams Cell 149 for component testing. INSTALL a new multi-function switch.• Did the multi-function switch pass the component test? REFER to Section 211-05.
(Continued)
2004 Excursion, F-Super Duty 250-550, 12/2004
501-16-18 501-16-18Wipers and Washers
DIAGNOSIS AND TESTING (Continued)
PINPOINT TEST K: THE WASHER PUMP IS IN OPERATIVE (Continued)
Test Step Result / Action to Take
K2 CHECK CIRCUIT 57 (BK) FOR OPEN
• Measure the resistance between C202b pin 6, circuit 57 (BK),harness side and ground.
YesFor Excursion only GO to K3. All othersGO to K11.
NoREPAIR the circuit. TEST the system for
• Is the resistance less than 5 ohms? normal operation.
K3 CHECK CIRCUIT 993 (BN/WH) FOR OPEN (EXCURSION ONLY)
• Key in OFF position.• Disconnect: Rear Window Wiper Motor C476 (Excursion only).• Measure the resistance between C202b pin 11, circuit 993
(BN/WH), harness side and C476 pin 6, circuit 993 (BN/WH),harness side.
YesGO to K4.
NoREPAIR the circuit. TEST the system for
• Is the resistance less than 5 ohms? normal operation.
K4 CHECK CIRCUIT 57 (BK) FOR OPEN
• Measure the resistance between C476 pin 2, circuit 57 (BK)harness side and ground.
YesGO to K5.
NoREPAIR the circuit. TEST the system for
• Is the resistance less than 5 ohms? normal operation.
(Continued)
2004 Excursion, F-Super Duty 250-550, 12/2004
501-16-19 501-16-19Wipers and Washers
DIAGNOSIS AND TESTING (Continued)
PINPOINT TEST K: THE WASHER PUMP IS IN OPERATIVE (Continued)
Test Step Result / Action to Take
K5 CHECK CIRCUIT 406 (BN/WH) FOR VOLTAGE
• Key in ON position.• Measure the voltage between C476 pin 4, circuit 406 (BN/WH)
harness side and ground.
YesGO to K6.
NoVERIFY CJB fuse 21 (25A) is OK. If OK,REPAIR the circuit. TEST the system for
• Is the voltage greater than 10 volts? normal operation.
K6 CHECK CIRCUIT 941 (PK/LG) FOR VOLTAGE
• Key in OFF position.• Connect: Rear Window Wiper Motor C476.• Disconnect: Washer Pump Motor C137.• Key in ON position.• Measure the voltage between C137 pin 1, circuit 941 (PK/LG)
harness side and ground while depressing the multi-functionswitch to the wash position.
YesGO to K8.
No• Is the voltage greater than 10 volts? GO to K7.
K7 CHECK CIRCUIT 941 (BN/WH) AND 946 (PK/LG) FOR OPEN
• Key in OFF position.• Disconnect: Rear Window Wiper Motor C476.
(Continued)
2004 Excursion, F-Super Duty 250-550, 12/2004
501-16-20 501-16-20Wipers and Washers
DIAGNOSIS AND TESTING (Continued)
PINPOINT TEST K: THE WASHER PUMP IS IN OPERATIVE (Continued)
Test Step Result / Action to Take
K7 CHECK CIRCUIT 941 (BN/WH) AND 946 (PK/LG) FOR OPEN(Continued)
• Measure the resistance between C476 pin 5, circuit 946(PK/LG), harness side and C137 pin 1, circuit 941 (PK/LG),harness side.
YesINSTALL a new rear window wiper motor.REFER to Rear Window Wiper Motor inthis section.
NoREPAIR the circuit. TEST the system for
• Is the resistance less than 5 ohms? normal operation.
K8 CHECK CIRCUIT 946 (BK/WH) FOR GROUND
• Measure the resistance between C137 pin 2, circuit 946(BK/WH) harness side and ground.
YesINSTALL a new washer pump. REFER toWasher Pump and Reservoir in thissection.
No• Is the resistance less than 5 ohms? GO to K9.
K9 CHECK CIRCUIT 946 (BK/WH) FOR OPEN
• Disconnect: Windshield Wiper Motor C125.• Measure the resistance between C125 pin 7, circuit 946
(BK/WH), harness side and C137 pin 2, circuit 946 (BK/WH),harness side.
YesGO to K10.
NoREPAIR the circuit. TEST the system for
• Is the resistance less than 5 ohms? normal operation.
(Continued)
2004 Excursion, F-Super Duty 250-550, 12/2004
501-16-21 501-16-21Wipers and Washers
DIAGNOSIS AND TESTING (Continued)
PINPOINT TEST K: THE WASHER PUMP IS IN OPERATIVE (Continued)
Test Step Result / Action to Take
K10 CHECK CIRCUIT 57 (BK) FOR OPEN
• Measure the resistance between C125 pin 6, circuit 57 (BK)harness side and ground.
YesINSTALL a new windshield wiper motor.REFER to Windshield Wiper Motor in thissection.
NoREPAIR the circuit. TEST the system for
• Is the resistance less than 5 ohms? normal operation.
K11 CHECK CIRCUIT 589 (OG) FOR OPEN
• Key in OFF position.• Disconnect: Windshield Wiper Motor C125.• Disconnect: Multi-function Switch C202b.• Measure the resistance between C125 pin 12, circuit 589 (OG),
harness side and C202b pin 5, circuit 589 (OG), harness side.
YesGO to K12.
NoREPAIR the circuit. TEST the system for
• Is the resistance less than 5 ohms? normal operation.
K12 CHECK CIRCUIT 65 (DG) FOR VOLTAGE
• Key in ON position.• Measure the voltage between C125 pin 5, circuit 65 (DG)
harness side and ground.
YesGO to K13.
NoVERIFY CJB fuse 106 (30A) is OK. If OK,REPAIR the circuit. TEST the system for
• Is the voltage greater than 10 volts? normal operation.
(Continued)
2004 Excursion, F-Super Duty 250-550, 12/2004
501-16-22 501-16-22Wipers and Washers
DIAGNOSIS AND TESTING (Continued)
PINPOINT TEST K: THE WASHER PUMP IS IN OPERATIVE (Continued)
Test Step Result / Action to Take
K13 CHECK CIRCUIT 946 (PK/LG) FOR VOLTAGE
• Key in OFF position.• Connect: Rear Window Wiper Motor C476.• Disconnect: Washer Pump Motor C137.• Key in ON position.• Measure the voltage between C137 pin 2, circuit 946 (BK/WH)
harness side and ground while depressing the multi-functionswitch to the wash position.
YesGO to K15.
No• Is the voltage greater than 10 volts? GO to K14.
K14 CHECK CIRCUIT 946 (BK/WH) FOR OPEN
• Key in OFF position.• Disconnect: Windshield Wiper Motor C125.• Measure the resistance between C125 pin 7, circuit 946
(BK/WH) (Excursion) or circuit 994 (BK/WH) (all others), harnessside and C137 pin 2, circuit 946 (BK/WH) (Excursion) or circuit994 (BK/WH) (all others), harness side.
YesINSTALL a new windshield wiper motor.REFER to Windshield Wiper Motor in thissection.
NoREPAIR the circuit. TEST the system for
• Is the resistance less than 5 ohms? normal operation.
(Continued)
2004 Excursion, F-Super Duty 250-550, 12/2004
501-16-23 501-16-23Wipers and Washers
DIAGNOSIS AND TESTING (Continued)
PINPOINT TEST K: THE WASHER PUMP IS IN OPERATIVE (Continued)
Test Step Result / Action to Take
K15 CHECK CIRCUIT 941 (BK) FOR OPEN
• Measure the resistance between C137 pin 1, circuit 941 (BK)(Excursion) or C137 circuit 57 (BK) (all others) harness side andground.
YesINSTALL a new washer pump. REFER toWasher Pump and Reservoir in thissection.
NoREPAIR the circuit. TEST the system for
• Is the resistance less than 5 ohms? normal operation.
PINPOINT TEST L: THE WINDSHIELD WIPER SPEED DEPENDENT INTERVAL MODE DOES NOTOPERATE CORRECTLY
Test Step Result / Action to Take
L1 CHECK THE ABS — MONITOR THE VSS
• Monitor VSS while driving the vehicle from 0 to 88.5 kph (55 Yesmph). GO to L2.
• Does the VSS agree with the ABS PIDs? NoREFER to Section 206-09.
L2 CHECK CIRCUIT 679 (GY/BK) FOR AN OPEN
• Disconnect: ABS C135.• Disconnect: Windshield Wiper Motor C125.• Measure the resistance between anti-lock brake control module
C135 pin 11, circuit 679 (GY/BK), harness side and windshieldwiper motor C125 pin 4, circuit 679 (GY/BK), harness side.
YesGO to L3.
NoREPAIR the circuit. TEST the system for
• Is the resistance less than 5 ohms? normal operation.
(Continued)
2004 Excursion, F-Super Duty 250-550, 12/2004
501-16-24 501-16-24Wipers and Washers
DIAGNOSIS AND TESTING (Continued)
PINPOINT TEST L: THE WINDSHIELD WIPER SPEED DEPENDENT INTERVAL MODE DOES NOTOPERATE CORRECTLY (Continued)
Test Step Result / Action to Take
L3 CHECK CIRCUIT 679 (GY/BK) FOR A SHORT TO GROUND
• Measure the resistance between ABS C135 pin 11, circuit 679(GY/BK), harness side and ground.
YesGO to L4.
NoREPAIR the circuit. TEST the system for
• Is the resistance greater than 10,000 ohms? normal operation.
L4 CHECK CIRCUIT 679 (GY/BK) FOR A SHORT TO VOLTAGE
• Key in ON position.• Measure the voltage between ABS C135 pin 11, circuit 679
(GY/BK), harness side and ground.
YesREPAIR the circuit. TEST the system fornormal operation.
No• Is voltage present? GO to L5.
L5 CHECK FOR CORRECT WIPER MOTOR OPERATION
• Key in OFF position. Yes• Disconnect all wiper motor connectors. INSTALL a new windshield wiper motor.• Check for: REFER to Windshield Wiper Motor in this
— corrosion. section.— pushed-out pins. No
• Connect all wiper motor connectors and make sure they seat The system is operating correctly at thiscorrectly. time. Concern may have been caused by
• Operate the system and verify the concern is still present. a loose or corroded connector. TEST the• Is the concern still present? system for normal operation.
2004 Excursion, F-Super Duty 250-550, 12/2004