2011 INFINITI QX56 Factory Service Manual

coolant level warning traction control sensor fuel filter location service schedule

Page 4537 of 5598

INFINITI QX56 2011 Factory Service Manual
SE-78
< DTC/CIRCUIT DIAGNOSIS >
SEATBACK THERMAL ELECTRIC UNIT SENSOR
4. Check continuity between climate controlled seat control unit harness connector and ground.
Is the inspection result normal?
Y

Page 4538 of 5598

INFINITI QX56 2011 Factory Service Manual
SEAT CUSHION THERMAL ELECTRIC UNITSE-79
< DTC/CIRCUIT DIAGNOSIS >
C
DE
F
G H
I
K L
M A
B
SE
N
O P
SEAT CUSHION THERMAL ELECTRIC UNIT
Component Function CheckINFOID:0000000006217399
1.CHECK SEAT CUSHI

SEAT CUSHION THERMAL ELECTRIC UNITSE-79
< DTC/CIRCUIT DIAGNOSIS >
C
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F
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I
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M A
B
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N
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SEAT CUSHION THERMAL ELECTRIC UNIT
Component Function CheckINFOID:0000000006217399
1.CHECK SEAT CUSHION THERMAL ELECTRIC UNIT FUNCTION
Check whether or not the temperature of the seat cush ion thermal electric unit changes in accordance with the
HEAT or COOL switch operation of the climate controlled seat control switch.
Is the inspection result normal?
YES >> Seatback thermal electric unit function is OK.
NO >> Refer to SE-79, "
Diagnosis Procedure".
Diagnosis ProcedureINFOID:0000000006217400
1.CHECK SEAT CUSHION THERMAL ELECTRIC UNIT SIGNAL
1. Turn ignition switch ON.
2. Check voltage between seat cushion ther mal electric unit harness connector and ground.
*:It changes between 12 and 0 V
NOTE:
Wait 1 minute or more after the activation start, and then start the measurement.
Is the inspection result normal?
YES >> Replace seat cushion thermal electric unit.
NO >> GO TO 2.
2.CHECK SEAT CUSHION THERMAL ELECTRIC UNIT CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect climate controlled seat control unit connec tor and seat cushion thermal electric unit connector.
3. Check continuity between climate controlled seat control unit harness connector and seat cushion thermal
electric unit harness connector.
4. Check continuity between climate controll ed seat control unit harness connector and ground.
(+)
(–) Condition Voltage (V)
(Approx.)
Seat cushion thermal electric unit
Connector Terminal
Driver side B505 67
Ground Climate controlled seat
switch
HEAT or COOL 0 - 12*
Other than above 0
68 HEAT or COOL 0 - 12*
Other than above 0
Passenger side B515 67
Climate controlled seat
switch HEAT or COOL 0 - 12*
Other than above 0
68 HEAT or COOL 0 - 12*
Other than above 0
Climate controlled seat control unit Seat cushion thermal electric unit
Continuity
Connector Terminal Connector Terminal
Driver side B509 67
B505 67
Existed
68 68
Passenger side B519 67
B515 67
68 68
Revision: 2010 May2011 QX56

Page 4539 of 5598

INFINITI QX56 2011 Factory Service Manual
SE-80
< DTC/CIRCUIT DIAGNOSIS >
SEAT CUSHION THERMAL ELECTRIC UNIT
Is the inspection result normal?
YES >> Replace climate controlled seat control unit. Refer to SE-117, "CLIMATE CONTROLLED SEAT
UNIT

Page 4540 of 5598

INFINITI QX56 2011 Factory Service Manual
SEAT CUSHION THERMAL ELECTRIC UNIT SENSORSE-81
< DTC/CIRCUIT DIAGNOSIS >
C
DE
F
G H
I
K L
M A
B
SE
N
O P
SEAT CUSHION THERMAL ELECTRIC UNIT SENSOR
Component Function CheckINFOID:0000000006217401
1.C

SEAT CUSHION THERMAL ELECTRIC UNIT SENSORSE-81
< DTC/CIRCUIT DIAGNOSIS >
C
DE
F
G H
I
K L
M A
B
SE
N
O P
SEAT CUSHION THERMAL ELECTRIC UNIT SENSOR
Component Function CheckINFOID:0000000006217401
1.CHECK SEAT CUSHION THERMAL ELECTRIC UNIT SENSOR FUNCTION
Check whether or not the temperature of the seat cush ion thermal electric unit changes in accordance with the
HEAT or COOL switch operation of the climate controlled seat control switch.
Is the inspection result normal?
YES >> INSPECTION END
NO >> Refer to SE-81, "
Diagnosis Procedure".
Diagnosis ProcedureINFOID:0000000006217402
1.CHECK SEAT CUSHION THERMAL ELECTRIC UNIT SENSOR SIGNAL
1. Turn ignition switch ON.
2. Check voltage between seat cushion ther mal electric unit harness connector and ground.
Is the inspection result normal?
YES >> GO TO 3.
NO >> GO TO 2.
2.CHECK SEAT CUSHION THERMAL ELECTRIC UNIT SENSOR CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect climate controlled seat control unit connec tor and seat cushion thermal electric unit connector.
3. Check continuity between climate controlled seat control unit harness connector and seat cushion thermal
electric unit harness connector.
4. Check continuity between climate controll ed seat control unit harness connector and ground.
Is the inspection result normal?
YES >> Replace climate controlled seat control unit.
NO >> Repair or replace harness.
3.CHECK SEAT CUSHION THERMAL ELEC TRIC UNIT SENSOR GROUND CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect climate controlled seat control unit connec tor and seat cushion thermal electric unit connector.
3. Check continuity between climate controlled seat control unit harness connector and seat cushion thermal
electric unit harness connector.
(+)
(-) Condition Voltage (V)
(Approx.)
Seat cushion thermal electric unit
Connector Terminal
Driver side B505 70 GroundClimate controlled seat
operated
1 - 5
Passenger side B515
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
Revision: 2010 May2011 QX56

Page 4541 of 5598

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 norma

Page 4542 of 5598

INFINITI QX56 2011 Factory Service Manual
CLIMATE CONTROLLED SEATBACK BLOWER MOTORSE-83
< DTC/CIRCUIT DIAGNOSIS >
C
DE
F
G H
I
K L
M A
B
SE
N
O P
CLIMATE CONTROLLED SEATBACK BLOWER MOTOR
Component Function CheckINFOID:0000000006217404
1.CHEC

CLIMATE CONTROLLED SEATBACK BLOWER MOTORSE-83
< DTC/CIRCUIT DIAGNOSIS >
C
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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

Page 4543 of 5598

INFINITI QX56 2011 Factory Service Manual
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 blowe

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

Page 4544 of 5598

INFINITI QX56 2011 Factory Service Manual
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 gro

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