Infiniti QX56 (Z62). Manual — part 1134
SE-74
< DTC/CIRCUIT DIAGNOSIS >
CLIMATE CONTROLLED SEAT SWITCH
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 SWITCH
Check climate controlled seat switch.
Refer to
.
Is the inspection result normal?
YES
>> GO TO 6.
NO
>> Replace climate controlled seat switch. Refer to
SE-147, "Removal and Installation"
.
6.
CHECK INTERMITTENT INCIDENT
GI-40, "Intermittent Incident"
>> INSPECTION END
Component Inspection
INFOID:0000000006217393
1.
CHECK CLIMATE CONTROLLED SEAT SWITCH
1.
Turn ignition switch OFF.
2.
Disconnect climate controlled seat switch connector.
3.
Check the continuity between climate controlled seat switch terminals under the following terminals.
Is the inspection result normal?
YES
>> INSPECTION END
NO
>> Replace climate controlled seat switch. Refer to
SE-147, "Removal and Installation"
.
Terminal
Condition
Continuity
2
1
Climate controlled seat switch
COOL mode
ON
Existed
OFF
Not existed
3
HEAT mode
ON
Existed
OFF
Not existed
SEATBACK THERMAL ELECTRIC UNIT
SE-75
< DTC/CIRCUIT DIAGNOSIS >
C
D
E
F
G
H
I
K
L
M
A
B
SE
N
O
P
SEATBACK THERMAL ELECTRIC UNIT
Component Function Check
INFOID:0000000006217394
1.
CHECK SEATBACK THERMAL ELECTRIC UNIT FUNCTION
Check whether or not the temperature of the seatback 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
Diagnosis Procedure
INFOID:0000000006217395
1.
CHECK SEATBACK THERMAL ELECTRIC UNIT INPUT SIGNAL
1.
Turn ignition switch ON.
2.
Check voltage between seatback thermal 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 seatback thermal electric unit.
NO
>> GO TO 2.
2.
CHECK SEATBACK THERMAL ELECTRIC UNIT CIRCUIT
1.
Turn ignition switch OFF.
2.
Disconnect climate controlled seat control unit connector and seatback thermal electric unit connector.
3.
Check continuity between climate controlled seat control unit harness connector and seatback thermal
electric unit harness connector.
4.
Check continuity between climate controlled seat control unit harness connector and ground.
(+)
(–)
Condition
Voltage (V)
(Approx.)
Seatback thermal electric unit
Connector
Terminal
Driver side
B465
58
Ground
Climate controlled seat
switch
HEAT or COOL
0 - 12*
Other than above
0
59
HEAT or COOL
0 - 12*
Other than above
0
Passenger side
B439
58
Climate controlled seat
switch
HEAT or COOL
0 - 12*
Other than above
0
59
HEAT or COOL
0 - 12*
Other than above
0
Climate controlled seat control unit
Seatback thermal electric unit
Continuity
Connector
Terminal
Connector
Terminal
Driver side
B509
58
B465
58
Existed
59
59
Passenger side
B519
58
B439
58
59
59
SE-76
< DTC/CIRCUIT DIAGNOSIS >
SEATBACK THERMAL ELECTRIC UNIT
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.
Climate controlled seat control unit
Ground
Continuity
Connector
Terminal
Driver side
B509
58
Not existed
59
Passenger side
B519
58
59
SEATBACK THERMAL ELECTRIC UNIT SENSOR
SE-77
< DTC/CIRCUIT DIAGNOSIS >
C
D
E
F
G
H
I
K
L
M
A
B
SE
N
O
P
SEATBACK THERMAL ELECTRIC UNIT SENSOR
Component Function Check
INFOID:0000000006217396
1.
CHECK SEATBACK THERMAL ELECTRIC UNIT SENSOR FUNCTION
Check whether or not the temperature of the seatback 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
Diagnosis Procedure
INFOID:0000000006217397
1.
CHECK SEATBACK THERMAL ELECTRIC UNIT SENSOR SIGNAL
1.
Turn ignition switch ON.
2.
Check voltage between seatback thermal electric unit harness connector and ground.
Is the inspection result normal?
YES
>> GO TO 3.
NO
>> GO TO 2.
2.
CHECK SEATBACK THERMAL ELECTRIC UNIT SENSOR CIRCUIT
1.
Turn ignition switch OFF.
2.
Disconnect climate controlled seat control unit connector and seatback thermal electric unit connector.
3.
Check continuity between climate controlled seat control unit harness connector and seatback thermal
electric unit harness connector.
4.
Check continuity between climate controlled 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 SEATBACK THERMAL ELECTRIC UNIT SENSOR GROUND CIRCUIT
1.
Turn ignition switch OFF.
2.
Disconnect climate controlled seat control unit connector and seatback thermal electric unit connector.
3.
Check continuity between climate controlled seat control unit harness connector and seatback thermal
electric unit harness connector.
(+)
(-)
Condition
Voltage (V)
(Approx.)
Seatback thermal electric unit
Connector
Terminal
Driver side
B465
61
Ground
Climate controlled seat
operated
1 - 5
Passenger side
B439
Climate controlled seat control unit
Seatback thermal electric unit
Continuity
Connector
Terminal
Connector
Terminal
Driver side
B507
61
B465
61
Existed
Passenger side
B517
B439
Climate controlled seat control unit
Ground
Continuity
Connector
Terminal
Driver side
B507
61
Not existed
Passenger side
B517
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