INFINITI QX56 2011 Factory Service Manual

REAR WINDOW DEFOGGER SYSTEMDEF-19
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JCLWM5503GB
Revision: 2010 May2011 QX56

DEF-20
< WIRING DIAGRAM >
REAR WINDOW DEFOGGER SYSTEM
JCLWM5504GB
Revision: 2010 May2011 QX56

REAR WINDOW DEFOGGER SYSTEMDEF-21
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Revision: 2010 May2011 QX56

DEF-22
< WIRING DIAGRAM >
REAR WINDOW DEFOGGER SYSTEM
JCLWM5506GB
Revision: 2010 May2011 QX56

REAR WINDOW DEFOGGER SYSTEMDEF-23
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Revision: 2010 May2011 QX56

DEF-24
< BASIC INSPECTION >
DIAGNOSIS AND REPAIR WORK FLOW
BASIC INSPECTION
DIAGNOSIS AND REPAIR WORK FLOW
Work FlowINFOID:0000000006299433
DETAILED FLOW
1.OBTAIN INFORMATION ABOUT SYMPTOM
Interview the customer to obtain the malfunction information (conditions and environment when the malfunc-
tion occurred) as much as possible when the customer brings the vehicle in.
>> GO TO 2.
2.CHECK FOR DTC
Perform self diagnosis with CONSULT-III
Is any DTC detected?
YES-1 >> BCM: Refer to BCS-57, "DTCIndex".
YES-2 >> IPDM E/R: Refer to PCS-22, "
DTCIndex".
NO >> GO TO 3.
3.REPRODUCE THE MALFUNCTION INFORMATION
Check the malfunction on the vehicle that the customer describes.
Inspect the relation of the symptoms and the condition when the symptoms occur.
>> GO TO 4.
4.IDENTIFY THE MALFUNCTIONING SYS TEM WITH “SYMPTOM DIAGNOSIS”
Use “Symptom diagnosis” from the sympt om inspection result in step 3. Then identify where to start perform-
ing the diagnosis based on possible causes and symptoms.
>> GO TO 5.
5.IDENTIFY MALFUNCTIONING PARTS WITH “COMPONENT DIAGNOSIS”
Perform the diagnosis with “Component diagnosis” of the applicable system.
>> GO TO 6.
6.REPAIR OR REPLACE THE MALFUNCTIONING PARTS
Repair or replace the specified malfunctioning parts.
>> GO TO 7.
7.FINAL CHECK
Check that malfunctions are not reproduced when obtaini ng the malfunction information from the customer,
referring to the symptom inspection result in step 3.
Are all malfunctions corrected?
YES >> INSPECTION END
NO >> GO TO 4.
Revision: 2010 May2011 QX56

REAR WINDOW DEFOGGER SWITCHDEF-25
< DTC/CIRCUIT DIAGNOSIS >
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DTC/CIRCUIT DIAGNOSIS
REAR WINDOW DEFOGGER SWITCH
Component Function CheckINFOID:0000000006299434
1.CHECK REAR WINDOW DEF OGGER SWITCH FUNCTION
Check that the indicator lamp of rear window def ogger illuminates when rear window defogger switch ON.
Is the inspection result normal?
YES >> Rear window defogger switch function is OK.
NO >> Refer to DEF-25, "
Diagnosis Procedure"
Diagnosis ProcedureINFOID:0000000006299435
1.CHECK MULTIFUNCTION SWITCH (R EAR WINDOW DEFOGGER SWITCH)
Does multifunction switch operate normally?
Refer to AV-199, "
Symptom Table".
Is the inspection result normal?
YES >> INSPECTION END.
NO >> Replace multifunction switch (rear window defogger switch).
Revision: 2010 May2011 QX56

DEF-26
< DTC/CIRCUIT DIAGNOSIS >
REAR WINDOW DEFOGGER RELAY
REAR WINDOW DEFOGGER RELAY
DescriptionINFOID:0000000006299436
The rear window defogger is operated by turning the rear window defogger switch ON.
Component Function CheckINFOID:0000000006299437
1.CHECK FUNCTION
1. Perform IPDM E/R Active Test (“REAR DEFOGGER”) using CONSULT-III.
2. Touch “ON”.
3. Check that the rear window heating wire is getting warmer.
Is the inspection result normal?
YES >> Rear window defogger relay function is OK.
NO >> Refer to DEF-26, "
Diagnosis Procedure"
Diagnosis ProcedureINFOID:0000000006299438
1.CHECK FUSE
1. Turn ignition switch OFF.
2. Check the 15A fuse (No. 41, 42 located in IPDM E/R).
Is the inspection result normal?
YES >> GO TO 2.
NO >> Replace the blown fuse after repairing the affected circuit if a fuse is blown.
2.CHECK IPDM E/R OUTPUT SIGNAL
1. Perform IPDM E/R Active Test (“REAR DEFOGGER”) using CONSULT-III.
2. Touch “ON”.
3. Check voltage between IPDM E/R harness connector and ground.
Is the inspection result normal?
YES >> INSPECTION END
NO >> Replace IPDM E/R. Refer to PCS-32, "
Removal and Installation".
(+)
(− ) CONSULT-III Active Test condition Voltage (V)
(Approx.)
IPDM E/R
Connector Terminal
E11 14 Ground REAR DEFOGGER ON Battery voltage
OFF 0
Revision: 2010 May2011 QX56

REAR WINDOW DEFOGGERDEF-27
< DTC/CIRCUIT DIAGNOSIS >
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REAR WINDOW DEFOGGER
DescriptionINFOID:0000000006299439
Heats the heating wire with the power supply from the rear window defogger relay to prevent the rear window
from fogging up.
Component Function CheckINFOID:0000000006299440
1.CHECK FUNCTION
1. Perform IPDM E/R Active Test (“REAR DEFOGGER”) using CONSULT-III.
2. Touch “ON”.
3. Check that the rear window heating wire is getting warmer.
Is the inspection result normal?
YES >> Rear window defogger relay function is OK.
NO >> Refer to DEF-26, "
Diagnosis Procedure"
Diagnosis ProcedureINFOID:0000000006299441
1.CHECK REAR WINDOW DEFOGG ER POWER SUPPLY CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect rear window defogger connector.
3. Turn ignition switch ON.
4. Check voltage between rear window defogger harness connector and ground.
Is the inspection result normal?
YES >> GO TO 2.
NO >> GO TO 4.
2.CHECK REAR WINDOW DE FOGGER GROUND CIRCUIT
1. Turn ignition switch OFF.
2. Check continuity between rear window defogger harness connector and ground.
Is the inspection result normal?
YES >> GO TO 3.
NO >> Repair or replace harness.
3.CHECK FILAMENT
Refer to DEF-43, "
Inspection and Repair".
Is the inspection result normal?
YES >> GO TO 5.
NO >> Repair filament.
4.CHECK REAR WINDOW DEFOGG ER POWER SUPPLY CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect IPDM E/R connector.
3. Check continuity between IPDM E/R harness connector and rear window defogger harness connector.
(+)
(− ) Condition Voltage (V)
(Approx.)
Rear window defogger
Connector Terminal
D103 1 Ground Rear window defogger switch ON Battery voltage
OFF 0
Rear window defogger GroundContinuity
Connector Terminal
D104 2 Existed
Revision: 2010 May2011 QX56

DEF-28
< DTC/CIRCUIT DIAGNOSIS >
REAR WINDOW DEFOGGER
4. Check continuity between IPDM E/R connector and ground.
Is the inspection result normal?
YES >> GO TO 5.
NO >> Repair or replace harness.
5.CHECK INTERMITTENT INCIDENT
Check intermittent incident.
Refer to GI-40, "
Intermittent Incident".
>> INSPECTION END
IPDM E/R Rear window defogger Continuity
Connector Terminal Connector Terminal
E11 14 D103 1 Existed
IPDM E/R GroundContinuity
Connector Terminal
E11 14 Not existed
Revision: 2010 May2011 QX56