Infiniti QX56 (Z62). Manual — part 1135
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?
YES
>> GO TO 4.
NO
>> Repair or replace harness.
4.
CHECK SEATBACK THERMAL ELECTRIC UNIT SENSOR
Check seatback thermal electric unit sensor.
Refer to
.
Is the inspection result normal?
YES
>> GO TO 5.
NO
>> Replace seatback thermal electric unit.
5.
CHECK INTERMITTENT INCIDENT
GI-40, "Intermittent Incident"
>> INSPECTION END
Component Inspection
INFOID:0000000006217398
1.
CHECK SEATBACK THERMAL ELECTRIC UNIT SENSOR
1.
Turn ignition switch OFF.
2.
Disconnect seatback thermal electric unit connector.
3.
Check resistance between seatback thermal electric unit terminals.
*
: When sensor temperature is 25
°
C (77
°
F).
Is the inspection result normal?
YES
>> INSPECTION END
NO
>> Replace seatback thermal electric unit. Refer to
SE-117, "CLIMATE CONTROLLED SEAT UNIT :
Climate controlled seat control unit
Seatback thermal electric unit
Continuity
Connector
Terminal
Connector
Terminal
Driver side
B507
60
B465
60
Existed
Passenger side
B517
B439
Climate controlled seat control unit
Ground
Continuity
Connector
Terminal
Driver side
B507
60
Not existed
Passenger side
B517
Seatback thermal electric unit
Resistance
(K
Ω
)
(Approx.)
Terminal
60
61
1
*
SEAT CUSHION THERMAL ELECTRIC UNIT
SE-79
< DTC/CIRCUIT DIAGNOSIS >
C
D
E
F
G
H
I
K
L
M
A
B
SE
N
O
P
SEAT CUSHION THERMAL ELECTRIC UNIT
Component Function Check
INFOID:0000000006217399
1.
CHECK SEAT CUSHION THERMAL ELECTRIC UNIT FUNCTION
Check whether or not the temperature of the seat cushion 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:0000000006217400
1.
CHECK SEAT CUSHION THERMAL ELECTRIC UNIT SIGNAL
1.
Turn ignition switch ON.
2.
Check voltage between seat cushion 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 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 connector 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 controlled 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
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 : Disassembly and Assembly"
.
NO
>> Repair or replace harness.
Climate controlled seat control unit
Ground
Continuity
Connector
Terminal
Driver side
B509
67
Not existed
68
Passenger side
B519
67
68
SEAT CUSHION THERMAL ELECTRIC UNIT SENSOR
SE-81
< DTC/CIRCUIT DIAGNOSIS >
C
D
E
F
G
H
I
K
L
M
A
B
SE
N
O
P
SEAT CUSHION THERMAL ELECTRIC UNIT SENSOR
Component Function Check
INFOID:0000000006217401
1.
CHECK SEAT CUSHION THERMAL ELECTRIC UNIT SENSOR FUNCTION
Check whether or not the temperature of the seat cushion 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:0000000006217402
1.
CHECK SEAT CUSHION THERMAL ELECTRIC UNIT SENSOR SIGNAL
1.
Turn ignition switch ON.
2.
Check voltage between seat cushion thermal 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 connector 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 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 SEAT CUSHION THERMAL ELECTRIC UNIT SENSOR GROUND CIRCUIT
1.
Turn ignition switch OFF.
2.
Disconnect climate controlled seat control unit connector 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
Ground
Climate 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
70
B505
70
Existed
Passenger side
B519
B515
Climate controlled seat control unit
Ground
Continuity
Connector
Terminal
Driver side
B509
70
Not existed
Passenger side
B519
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