2010 INFINITI QX56 mirror

DEF-2
PASSENGER SIDE DOOR MIRROR DEFOG-
GER DOES NOT OPERATE. ............................
41
Diagnosis Procedure ........................................... ...41
REAR WINDOW DEFOGGER SWITCH DOES
NOT LIGHT, BUT REAR WINDOW DEFOG-
GER OPERATES ...............................................
42
Diagnosis Procedure ........................................... ...42
PRECAUTION .............................................43
PRECAUTIONS .............................................. ...43
Precaution for Supplemental Restraint System
(SRS) "AIR BAG" and "SEAT BELT PRE-TEN-
SIONER" .............................................................. ...
43
Precaution Necessary for Steering Wheel Rota-
tion After Battery Disconnect ..................................
43
Handling for Adhesive and Primer ..........................44
ON-VEHICLE REPAIR ...............................45
REAR WINDOW DEFOGGER ........................ ...45
Filament Check .................................................... ...45
Filament Repair .......................................................45
Revision: April 20092010 QX56

DEF-4
< FUNCTION DIAGNOSIS >
REAR WINDOW DEFOGGER SYSTEM
FUNCTION DIAGNOSIS
REAR WINDOW DEFOGGER SYSTEM
System DiagramINFOID:0000000005146817
System DescriptionINFOID:0000000005146818
Operation Description
• When rear window defogger switch is turned ON while ignition switch is ON, the A/C and AV switch assem-bly (rear window defogger switch) transmits rear window defogger switch signal to BCM.
• BCM transmits rear window defogger control signal to IPDM E/R and display unit via CAN communication when rear window defogger operates.
• IPDM E/R turns rear window defogger relay and heated mirror relay ON when rear window defogger switch
signal is received.
• Rear window defogger and door mirror defogger are supplied with power and operate when rear window defogger relay and heated mirror relay turn ON.
• Rear window defogger ON is displayed when signal is received.
Timer function
• BCM turns rear window defogger relay and heated mirror relay ON for approximately 15 minutes when rear window defogger switch is turned ON while ignition switch is ON. It makes rear window defogger and door
mirror defogger operate.
• Timer is canceled after pressing rear window defogger switch again during timer operation. Then BCM turns
rear window defogger relay and heated mirror relay OFF. The same reaction also occurs during timer opera-
tion, if the ignition switch is turned OFF.
INPUT/OUTPUT SIGNAL CHART
ALLIA0892GB
Switch Input signal to BCM BCM functionActuator
Rear window defogger switch Defogger switch signal Rear window defogger & door mirror
defogger control Rear window defogger
Door mirror defogger
Ignition switch Ignition signal
Revision: April 20092010 QX56

REAR WINDOW DEFOGGER SYSTEMDEF-5
< FUNCTION DIAGNOSIS >
C
DE
F
G H
I
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M A
B
DEF
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O P
Component Parts LocationINFOID:0000000005146819
Component DescriptionINFOID:0000000005146820
ALLIA0314ZZ
1. A. Steering column assembly B. BCM M18, M20 (view with instru-
ment panel removed) 2. A/C and AV switch assembly (rear
window defogger switch) M98 3. A. Rear window defogger ground
connector D604
B. Rear window defogger connector
D406
4. IPDM E/R E120, E122, E124 5. Do or mirror (door mirror defogger)
LH D4, RH D107
BCM • Operates the rear window defogger with the operation of rear window defogger switch.
• Performs the timer control of rear window defogger.
Rear window defogger relay • Operates the rear window defogger and the door mirror defogger with the control signal from
BCM.
A/C and AV switch assembly
(rear window defogger switch) • The rear window defogger switch is turned ON.
• Turns the indicator lamp ON when detecting the operation of rear window defogger.
Rear window defogger • Heats the heating wire with the power supply from the rear window defogger relay to prevent
the rear window from fogging up.
Door mirror defogger • Heats the heating wire with the power supply from the heated mirror relay to prevent the door
mirror from fogging up.
Revision: April 20092010 QX56

DEF-12
< COMPONENT DIAGNOSIS >
DOOR MIRROR DEFOGGER LH
DOOR MIRROR DEFOGGER LH
DescriptionINFOID:0000000005146834
Heats the heating wire with the power supply from the rear window defogger relay to prevent the door mirror
from fogging up.
Component Function CheckINFOID:0000000005146835
1. CHECK DOOR MIRROR DEFOGGER LH
Check that heating wire of door mirror defogger LH is heated when turning the rear window defogger switch
ON.
Is the inspection result normal?
YES >> Door mirror defogger is OK.
NO >> Refer to DEF-12, "
Diagnosis Procedure".
Diagnosis ProcedureINFOID:0000000005146836
Regarding Wiring Diagram information, refer to DEF-27, "Wiring Diagram".
1. CHECK POWER SUPPLY
Check if the following fuse in the IPDM E/R is blown.
Is the inspection result normal?
YES >> GO TO 2
NO >> If fuse is blown, be sure to eliminate cause of malfunction before installing new fuse.
2. CHECK DOOR MIRROR DE FOGGER POWER SUPPLY CIRCUIT
Check voltage between IPDM E/R connector and ground.
Is the inspection result normal?
YES >> GO TO 3
NO >> Replace IPDM E/R. Refer to PCS-35, "
Removal and Installation of IPDM E/R".
3. CHECK DOOR MIRROR DEFOGGER POWER SUPPLY CIRCUIT 2
1. Turn ignition switch OFF.
2. Disconnect door mirror LH.
3. Turn ignition switch ON.
4. Check voltage between door mirror LH connector and ground.
COMPONENT PARTS AMPEREFUSE NO.
IPDM E/R 15A43
ConnectorTe r m i n a l
ConditionVoltage (V)
(Approx.)
(+) (-)
E120 23 Ground Rear window defogger
switch ON
Battery voltage
Rear window defogger
switch OFF 0
LIIA2049E
ConnectorTe r m i n a l
ConditionVoltage (V)
(Approx.)
(+) (-)
LIIA1456E
Revision: April 20092010 QX56

DOOR MIRROR DEFOGGER LHDEF-13
< COMPONENT DIAGNOSIS >
C
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F
G H
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M A
B
DEF
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Is the inspection result normal?
YES >> GO TO 4
NO >> Repair or replace harness.
4. CHECK DOOR MIRROR DEFOGGER CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect IPDM E/R and door mirror LH.
3. Check continuity between IPDM E/R connector E120 terminal 23 and door mirror LH connector D4 terminal 10.
Is the inspection result normal?
YES >> GO TO 5
NO >> Repair or replace harness.
5. CHECK DOOR MIRROR DEFOGGER GROUND CIRCUIT
Check continuity between door mirror LH connector D4 terminal 11
and ground.
Is the inspection result normal?
YES >> GO TO 6
NO >> Repair or replace harness.
6. CHECK DOOR MIRROR DEFOGGER LH
Check door mirror defogger LH.
Refer to DEF-13, "
Component Inspection".
Is the inspection result normal?
YES >> GO TO 7
NO >> Replace door mirror. Refer to MIR-17, "
Door Mirror Assembly".
7. CHECK INTERMITTENT INCIDENT
Check intermittent incident.
Refer to GI-38, "
Intermittent Incident".
Is the inspection result normal?
YES >> Check the following. • Battery power supply circuit.
• IPDM E/R.
NO >> Repair or replace the malfunctioning parts.
Component InspectionINFOID:0000000005146837
1. CHECK DOOR MIRROR DEFOGGER
D4 10 Ground Rear window defogger
switch ON
Battery voltage
Rear window defogger
switch OFF 0
23 - 10
: Continuity should exist.
WIIA0529E
11 - Ground: Continuity should exist.
LIIA1454E
Revision: April 20092010 QX56

DEF-14
< COMPONENT DIAGNOSIS >
DOOR MIRROR DEFOGGER LH
Check continuity between door mirror LH terminals 10 and 11.
Is the inspection result normal?
YES >> Check the condition of the harness and the connector.
NO >> Replace malfunctioning door mirror LH. Refer to MIR-
17, "Door Mirror Assembly".
10 - 11
: Continuity should exist.
WIIA0531E
Revision: April 20092010 QX56

DOOR MIRROR DEFOGGER RHDEF-15
< COMPONENT DIAGNOSIS >
C
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G H
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J
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M A
B
DEF
N
O P
DOOR MIRROR DEFOGGER RH
DescriptionINFOID:0000000005146838
Heats the heating wire with the power supply from t he rear window defogger relay to prevent the door mirror
from fogging up.
Component Function CheckINFOID:0000000005146839
1.CHECK DOOR MIRROR DEFOGGER RH
Check that the heating wire of door mirror defogger RH is heated when turning the rear window defogger
switch ON.
Is the inspection result normal?
YES >> Door mirror defogger RH is OK.
NO >> Refer to DEF-15, "
Diagnosis Procedure".
Diagnosis ProcedureINFOID:0000000005146840
Regarding Wiring Diagram information, refer to DEF-27, "Wiring Diagram".
1. CHECK POWER SUPPLY
Check if the following fuse in the IPDM E/R is blown.
Is the inspection result normal?
YES >> GO TO 2
NO >> If fuse is blown, be sure to eliminate cause of malfunction before installing new fuse.
2. CHECK DOOR MIRROR DEFOGGER POWER SUPPLY CIRCUIT
Check voltage between IPDM E/R connector and ground.
Is the inspection result normal?
YES >> GO TO 3
NO >> Replace IPDM E/R. Refer to PCS-35, "
Removal and Installation of IPDM E/R".
3. CHECK DOOR MIRROR DEFOGGER POWER SUPPLY CIRCUIT 2
1. Turn ignition switch OFF.
2. Disconnect door mirror RH.
3. Turn ignition switch ON.
4. Check voltage between door mirror RH connector and ground.
COMPONENT PARTS AMPEREFUSE NO.
IPDM E/R 15A43
ConnectorTe r m i n a l
ConditionVoltage (V)
(Approx.)
(+) (-)
E120 23 Ground Rear window defogger
switch ON
Battery voltage
Rear window defogger
switch OFF 0
LIIA2049E
ConnectorTe r m i n a l
ConditionVoltage (V)
(Approx.)
(+) (-)
LIIA1456E
Revision: April 20092010 QX56

DEF-16
< COMPONENT DIAGNOSIS >
DOOR MIRROR DEFOGGER RH
Is the inspection result normal?
YES >> GO TO 4
NO >> Repair or replace harness.
4. CHECK DOOR MIRROR DEFOGGER CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect IPDM E/R and door mirror RH.
3. Check continuity between IP DM E/R connector E120 terminal
23 and door mirror RH connector D107 terminal 10.
Is the inspection result normal?
YES >> GO TO 5
NO >> Repair or replace harness.
5. CHECK DOOR MIRROR DEFOGGER GROUND CIRCUIT
Check continuity between door mirror RH connector D107 terminal
11 and ground.
Is the inspection result normal?
YES >> GO TO 6
NO >> Repair or replace harness.
6. CHECK DOOR MIRROR DEFOGGER RH
Check door mirror defogger RH.
Refer to DEF-16, "
Component Inspection".
Is the inspection result normal?
YES >> GO TO 7
NO >> Replace door mirror. Refer to MIR-17, "
Door Mirror Assembly".
7. CHECK INTERMITTENT INCIDENT
Check intermittent incident.
Refer to GI-38, "
Intermittent Incident".
Is the inspection result normal?
YES >> Check the following. • Battery power supply circuit.
• IPDM E/R.
NO >> Repair or replace the malfunctioning parts.
Component InspectionINFOID:0000000005146841
1. CHECK DOOR MIRROR DEFOGGER
D107 10 Ground Rear window defogger
switch ON
Battery voltage
Rear window defogger
switch OFF 0
23 - 10
: Continuity should exist.
WIIA0529E
11 - Ground: Continuity should exist.
LIIA1454E
Revision: April 20092010 QX56