INFINITI QX56 2011 Factory Service Manual

SE-82
< DTC/CIRCUIT DIAGNOSIS >
SEAT CUSHION THERMAL ELECTRIC UNIT SENSOR
4. Check continuity between climate controlled seat control unit harness connector and ground.
Is the inspection result normal?
YES >> GO TO 4.
NO >> Repair or replace harness.
4.CHECK SEAT CUSHION THERMAL ELECTRIC UNIT SENSOR
Check seat cushion thermal electric unit sensor.
Refer to SE-82, "
Component Inspection".
Is the inspection result normal?
YES >> GO TO 5.
NO >> Replace seat cushion thermal electric unit.
5.CHECK INTERMITTENT INCIDENT
Refer to GI-40, "
Intermittent Incident".
>> INSPECTION END
Component InspectionINFOID:0000000006217403
1.CHECK SEAT CUSHION THERMAL ELECTRIC UNIT SENSOR
1. Turn ignition switch OFF.
2. Disconnect seat cushion thermal electric unit connector.
3. Check resistance between seat cushion thermal electric unit terminals.
* : When sensor temperature is 25 °C (77 °F).
Is the inspection result normal?
YES >> INSPECTION END
NO >> Replace seat cushion thermal electric unit. Refer to SE-117, "
CLIMATE CONTROLLED SEAT
UNIT : Disassembly and Assembly".
Climate controlled seat control unit Seat cushion thermal electric unit
Continuity
Connector Terminal Connector Terminal
Driver side B509 70B505
70 Existed
Passenger side B519 B515
Climate controlled seat control unit GroundContinuity
Connector Terminal
Driver side B509 70 Not existed
Passenger side B519
Seat cushion thermal electric unit Resistance
(KΩ)
(Approx.)
Te r m i n a l
69 70 1
*
Revision: 2010 May2011 QX56

CLIMATE CONTROLLED SEATBACK BLOWER MOTORSE-83
< DTC/CIRCUIT DIAGNOSIS >
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CLIMATE CONTROLLED SEATBACK BLOWER MOTOR
Component Function CheckINFOID:0000000006217404
1.CHECK CLIMATE CONTROLLED SEA TBACK BLOWER MOTOR FUNCTION
When turning the climate controlled seat switch to the HEAT or COOL mode position, check that the climate
controlled seatback blower is operated in each specific mode.
Is the inspection result normal?
YES >> Climate controlled seatback blower motor is OK.
NO >> Refer to SE-83, "
Diagnosis Procedure".
Diagnosis ProcedureINFOID:0000000006217405
1.CHECK CLIMATE CONTROLLED SEATBAC K BLOWER MOTOR POWER SUPPLY
1. Turn ignition switch ON.
2. Check voltage between climate controlled s eatback blower motor harness connector and ground.
Is the inspection result normal?
YES >> GO TO 3.
NO >> GO TO 2.
2.CHECK CLIMATE CONTROLLE D SEATBACK BLOWER MOTOR POWER SUPPLY CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect climate controlled seatback blower moto r connector and climate controlled seat control unit
connector.
3. Check continuity between climate controlled seat back blower motor harness connector and climate con-
trolled seat control unit harness connector.
4. Check continuity between climate controlled seatback blower motor harness connector and ground.
Is the inspection result normal?
YES >> Replace climate controlled seat control unit. Refer to SE-117, "CLIMATE CONTROLLED SEAT
UNIT : Disassembly and Assembly".
NO >> Repair or replace harness.
(+)
(–) Condition Voltage (V)
(Approx.)
Climate controlled seatback blower motor
Connector Terminal
Driver side B466 62 GroundClimate controlled seat
switch
HEAT mode
12
COOL mode
Other than above 0
Passenger side B440 Climate controlled seat
switchHEAT mode
12
COOL mode
Other than above 0
Climate controlled seatback blower motor Climate controlled seat control unit Continuity
Connector Terminal Connector Terminal
Driver side B466 62B507
62 Existed
Passenger side B440 B517
Climate controlled seatback blower motor
GroundContinuity
Connector Terminal
Driver side B466 62 Not existed
Passenger side B440
Revision: 2010 May2011 QX56

SE-84
< DTC/CIRCUIT DIAGNOSIS >
CLIMATE CONTROLLED SEATBACK BLOWER MOTOR
3.CHECK CLIMATE CONTROLLED SEATBACK BLOWER MOTOR SPEED CONTROL SIGNAL
Check voltage between climate controlled seat back blower motor harness connector and ground.
Is the inspection result normal?
YES >> GO TO 5.
NO >> GO TO 4.
4.CHECK CLIMATE CONTROLLED SEATBACK BLOWER MOTOR SPEED CONTROL SIGNAL CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect climate controlled seatback blower moto r connector and climate controlled seat control unit
connector.
3. Check continuity between climate controlled seat back blower motor harness connector and climate con-
trolled seat control unit harness connector.
4. Check continuity between climate controlled seatback blower motor harness connector and ground.
Is the inspection result normal?
YES >> Replace climate controlled seat control unit. Refer to SE-117, "CLIMATE CONTROLLED SEAT
UNIT : Disassembly and Assembly".
NO >> Repair or replace harness.
5.CHECK CLIMATE CONTROLLED SEATBACK BLOWER MOTOR GROUND CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect climate controlled seatback blower moto r and climate controlled seat control unit connector.
3. Check continuity between climate controlled seat back blower motor harness connector and climate con-
trolled seat control unit harness connector.
(+)
(–) Condition Voltage (V)
(Approx.)
Climate controlled seatback blower motor
Connector Terminal
Driver side B466 63 GroundClimate controlled seat
switch
HEAT 5.5 - 8
COOL
HI 11.2
MID 8
LO 6.5
Other than above 0
Passenger side B440 Climate controlled seat
switchHEAT 5.5 - 8
COOL
HI 11.2
MID 8
LO 6.5
Other than above 0
Climate controlled seatback blower motor Climate controlled seat control unit Continuity
Connector Terminal Connector Terminal
Driver side B466 63B507
63 Existed
Passenger side B440 B517
Climate controlled seatback blower motor
GroundContinuity
Connector Terminal
Driver side B466 63 Not existed
Passenger side B440
Revision: 2010 May2011 QX56

CLIMATE CONTROLLED SEATBACK BLOWER MOTORSE-85
< DTC/CIRCUIT DIAGNOSIS >
C
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M A
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4. Check continuity between climate controlled seatback blower motor harness connector and ground.
Is the inspection result normal?
YES >> Replace climate controlled seatback blower motor. Refer to SE-117, "CLIMATE CONTROLLED
SEAT UNIT : Disassembly and Assembly".
NO >> Repair or replace harness.
Climate controlled seatback blower motor Climate controlled seat control unit Continuity
Connector Terminal Connector Terminal
Driver side B466 64B507
64 Existed
Passenger side B440 B517
Climate controlled seatback blower motor
GroundContinuity
Connector Terminal
Driver side B466 64 Not existed
Passenger side B440
Revision: 2010 May2011 QX56

SE-86
< DTC/CIRCUIT DIAGNOSIS >
CLIMATE CONTROLLED SEAT CUSHION BLOWER MOTOR
CLIMATE CONTROLLED SEAT CUSHION BLOWER MOTOR
Component Function CheckINFOID:0000000006217406
1.CHECK CLIMATE CONTROLLED SEAT CUSHION BLOWER MOTOR FUNCTION
When turning the climate controlled seat switch to the HEAT or COOL mode position, check that the climate
controlled seat cushion blower is operated in each specific mode.
Is the inspection result normal?
YES >> Climate controlled seat cushion blower motor is OK.
NO >> Refer to SE-86, "
Diagnosis Procedure".
Diagnosis ProcedureINFOID:0000000006217407
1.CHECK CLIMATE CONTROLLED SEAT CUSHION BLOWER MOTOR POWER SUPPLY
1. Turn ignition switch ON.
2. Check voltage between climate controlled seat cushion blower motor harness connector and ground.
Is the inspection result normal?
YES >> GO TO 3.
NO >> GO TO 2.
2.CHECK CLIMATE CONTROLLED SEAT CUSHION BLOWER MOTOR POWER SUPPLY CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect climate controlled seat cushion blower motor connector and climate controlled seat control
unit connector.
3. Check continuity between climate controlled seat cushion blower motor harness connector and climate
controlled seat control unit harness connector.
4. Check continuity between climate controlled s eat cushion blower motor harness connector and ground.
Is the inspection result normal?
YES >> Replace climate controlled seat control unit. Refer to SE-117, "CLIMATE CONTROLLED SEAT
UNIT : Disassembly and Assembly".
NO >> Repair or replace harness.
(+)
(–) Condition Voltage (V)
(Approx.)
Climate controlled seat cushion blower motor
Connector Terminal
Driver side B506 71 GroundClimate controlled seat
switch
HEAT mode
12
COOL mode
Other than above 0
Passenger side B516 Climate controlled seat
switchHEAT mode
12
COOL mode
Other than above 0
Climate controlled seat cushion blower motor Climate controlled seat control unit Continuity
Connector Terminal Connector Terminal
Driver side B506 71B507
71 Existed
Passenger side B516 B517
Climate controlled seat cushion blower motor
GroundContinuity
Connector Terminal
Driver side B506 71 Not existed
Passenger side B516
Revision: 2010 May2011 QX56

CLIMATE CONTROLLED SEAT CUSHION BLOWER MOTORSE-87
< DTC/CIRCUIT DIAGNOSIS >
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M A
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3.CHECK CLIMATE CONTROLLED SEAT CUSHION BLOWER MOTOR SPEED CONTROL SIGNAL
Check voltage between climate controlled seat cushion blower motor harness connector and ground.
Is the inspection result normal?
YES >> GO TO 5.
NO >> GO TO 4.
4.CHECK CLIMATE CONTROLLED SEAT CUSHION BL OWER MOTOR SPEED CONTROL SIGNAL CIR-
CUIT
1. Turn ignition switch OFF.
2. Disconnect climate controlled seat cushion blower motor connector and climate controlled seat control
unit connector.
3. Check continuity between climate controlled seat cushion blower motor harness connector and climate
controlled seat control unit harness connector.
4. Check continuity between climate controlled s eat cushion blower motor harness connector and ground.
Is the inspection result normal?
YES >> Replace climate controlled seat control unit. Refer to SE-117, "CLIMATE CONTROLLED SEAT
UNIT : Disassembly and Assembly".
NO >> Repair or replace harness.
5.CHECK CLIMATE CONTROLLED SEAT CUSHI ON BLOWER MOTOR GROUND CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect climate controlled seat cushion blower motor and climate controlled seat control unit connec-
tor.
3. Check continuity between climate controlled seat cushion blower motor harness connector and climate
controlled seat control unit harness connector.
(+)
(–) Condition Voltage (V)
(Approx.)
Climate controlled seat cushion blower motor
Connector Terminal
Driver side B506 72 GroundClimate controlled seat
switch
HEAT 5.5 - 8
COOL
HI 9.2
MID 8
LO 6.5
Other than above 0
Passenger side B516 Climate controlled seat
switchHEAT 5.5 - 8
COOL
HI 9.2
MID 8
LO 6.5
Other than above 0
Climate controlled seat cushion blower motor Climate controlled seat control unit Continuity
Connector Terminal Connector Terminal
Driver side B506 72B507
72 Existed
Passenger side B516 B517
Climate controlled seat cushion blower motor
GroundContinuity
Connector Terminal
Driver side B506 72 Not existed
Passenger side B516
Revision: 2010 May2011 QX56

SE-88
< DTC/CIRCUIT DIAGNOSIS >
CLIMATE CONTROLLED SEAT CUSHION BLOWER MOTOR
4. Check continuity between climate controlled seat cushion blower motor harness connector and ground.
Is the inspection result normal?
YES >> Replace climate controlled seat cushion blower motor. Refer to SE-117, "CLIMATE CON-
TROLLED SEAT UNIT : Disassembly and Assembly".
NO >> Repair or replace harness.
Climate controlled seat cushion blower motor Climate controlled seat control unit Continuity
Connector Terminal Connector Terminal
Driver side B506 64B507
64 Existed
Passenger side B516 B517
Climate controlled seat cushion blower motor
GroundContinuity
Connector Terminal
Driver side B506 64 Not existed
Passenger side B516
Revision: 2010 May2011 QX56

CLIMATE CONTROLLED SEAT SWITCH INDICATORSE-89
< DTC/CIRCUIT DIAGNOSIS >
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CLIMATE CONTROLLED SEAT SWITCH INDICATOR
Component Function CheckINFOID:0000000006217408
1.CHECK CLIMATE CONTROLLED SEA T SWITCH INDICATOR FUNCTION
Check that the related indicator lamp illuminates when c limate controlled seat switch is set to HEAT or COOL
mode.
Is the inspection result normal?
YES >> Climate controlled seat switch indicator function is OK.
NO >> Refer to SE-89, "
Diagnosis Procedure".
Diagnosis ProcedureINFOID:0000000006217409
1.CHECK CLIMATE CONTROLLED SEAT SWITCH INPUT SIGNAL
1. Turn ignition switch ON.
2. Check voltage between climate controll ed seat switch harness connector and ground.
Is the inspection result normal?
YES >> GO TO 3.
NO >> GO TO 2.
2.CHECK CLIMATE CONTROLLED SEA T SWITCH INDICATOR CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect climate controlled seat switch connecto r and climate controlled seat control unit connector.
3. Check continuity between climate controlled seat switch harness connector and climate controlled seat
control unit harness connector.
4. Check continuity between climate contro lled seat switch harness connector and ground.
(+)
(–) Condition Voltage (V)
(Approx.)
Climate controlled seat switch
Connector Terminal
Driver side M38 5
Ground Climate controlled seat
switch (driver side)
HEAT mode 12
OFF 0
4 COOL mode 12
OFF 0
Passenger side M39 5
Climate controlled seat
switch (passenger side) HEAT mode 12
OFF 0
4 COOL mode 12
OFF 0
Climate controlled seat switch Climate controlled seat control unit
Continuity
Connector Terminal Connector Terminal
Driver side M38 4
B507 56
Existed
557
Passenger side M39 4
B517 56
557
Revision: 2010 May2011 QX56

SE-90
< DTC/CIRCUIT DIAGNOSIS >
CLIMATE CONTROLLED SEAT SWITCH INDICATOR
Is the inspection result normal?
YES >> Replace climate controlled seat control unit. Refer to SE-117, "CLIMATE CONTROLLED SEAT
UNIT : Disassembly and Assembly".
NO >> Repair or replace harness.
3.CHECK CLIMATE CONTROLLED SEAT SWITCH GROUND CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect climate controlled seat switch connector.
3. Check continuity between climate contro lled seat switch harness connector and ground.
Is the inspection result normal?
YES >> Replace climate controlled seat switch. Refer to SE-147, "Removal and Installation".
NO >> Repair or replace harness.
Climate controlled seat switch
GroundContinuity
Connector Terminal
Driver side M38 4
Not existed
5
Passenger side M39 4
5
Climate controlled seat switch
GroundContinuity
Connector Terminal
Driver side M38 6 Existed
Passenger side M39
Revision: 2010 May2011 QX56

CLIMATE CONTROLLED SEAT BLOWER FILTERSE-91
< DTC/CIRCUIT DIAGNOSIS >
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CLIMATE CONTROLLED SEAT BLOWER FILTER
SEATBACK BLOWER MOTOR
SEATBACK BLOWER MOTOR : Diagnosis ProcedureINFOID:0000000006217410
1.CHECK CLIMATE CONTROLLED SEATBACK BLOWER FILTER
Remove climate controlled seatback blow er filter and check that there is no clogging by dirt or foreign matters.
Is the inspection result normal?
YES >> INSPECTION END
NO >> Replace climate controlled seatback blower filter. Refer to SE-148, "
SEATBACK : Removal and
Installation".
SEAT CUSHION BLOWER MOTOR
SEAT CUSHION BLOWER MOTOR : Diagnosis ProcedureINFOID:0000000006217411
1.CHECK CLIMATE CONTROLLED SEA T CUSHION BLOWER FILTER
Remove climate controlled seat cushion blower filter and check that there is no clogging by dirt or foreign mat-
ters.
Is the inspection result normal?
YES >> INSPECTION END
NO >> Replace climate controlled seat cushion blower filter. Refer to SE-148, "
SEAT CUSHION :
Removal and Installation".
Revision: 2010 May2011 QX56