Infiniti FX35, FX50 (S51). Manual — part 1624
SE-16
< DTC/CIRCUIT DIAGNOSIS >
CLIMATE CONTROLLED SEAT SWITCH
YES
>> Replace climate controlled seat control unit. Refer to
SE-85, "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-106, "Removal and Installation"
6.
CHECK INTERMITTENT INCIDENT
GI-36, "Intermittent Incident"
>> INSPECTION END
Component Inspection
INFOID:0000000005236614
1.
CHECK CLIMATE CONTROLLED SEAT SWITCH
1.
Turn ignition OFF.
2.
Disconnect climate controlled seat switch connector.
3.
Check climate controlled seat switch terminals.
Is the inspection result normal?
YES
>> Climate controlled seat switch is OK.
NO
>> Replace climate controlled seat switch. Refer to
SE-106, "Removal and Installation"
Climate controlled seat switch
Terminal
Condition
Continuity
Driver side
M177
2
1
Climate controlled seat
switch
COOL mode
Pressed
Existed
Released
Not existed
3
HEAT mode
Pressed
Existed
Released
Not existed
Passenger side
M178
2
1
Climate controlled seat
switch
COOL mode
Pressed
Existed
Released
Not existed
3
HEAT mode
Pressed
Existed
Released
Not existed
SEATBACK THERMAL ELECTRIC DEVICE
SE-17
< DTC/CIRCUIT DIAGNOSIS >
C
D
E
F
G
H
I
K
L
M
A
B
SE
N
O
P
SEATBACK THERMAL ELECTRIC DEVICE
Description
INFOID:0000000005236615
Installed in the seatback backside and heats or cools the airflow from the climate controlled seat blower motor
in accordance with the control from the climate controlled seat control unit.
Component Function Check
INFOID:0000000005236616
1.
CHECK FUNCTION
Checks whether or not the temperature of the seatback thermal electric device changes in accordance with
the HEAT or COOL switch operation of the climate controlled seat control switch.
Is the inspection result normal?
YES
>> Seatack thermal device function is OK.
NO
>> Refer to
Diagnosis Procedure
INFOID:0000000005236617
1.
CHECK SEATBACK THERMAL ELECTRIC DEVICE SIGNAL
1.
Turn ignition switch ON.
2.
Check voltage between seatback thermal electric device harness connector and ground.
*:It changes between battery voitage or 0V
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 device.
NO
>> GO TO 2.
2.
CHECK SEATBACK THERMAL ELECTRIC DEVICE CIRCUIT
1.
Turn ignition switch OFF.
2.
Disconnect climate controlled seat control unit connector and seatback thermal electric device connector.
3.
Check continuity between climate controlled seat control unit harness connector and seatback thermal
electric device harness connector.
4.
Check continuity between climate controlled seat control unit harness connector and ground.
(+)
(–)
Condition
Voltage (V)
(Approx.)
Seatback thermal electric device
Connector
Terminal
Driver side
B504
35
Ground
Climate con-
trolled seat
switch
HEAT and COOL
0 - battery voltage*
Other than above
0
36
HEAT and COOL
0 - battery voltage*
Other than above
0
Passenger side
B514
35
Climate con-
trolled seat
switch
HEAT and COOL
0 - battery voltage*
Other than above
0
36
HEAT and COOL
0 - battery voltage*
Other than above
0
Climate controlled seat control unit
Seatback thermal electric device
Continuity
Connector
Terminal
Connector
Terminal
Driver side
B509
35
B504
35
Existed
36
36
Passenger side
B519
35
B514
35
36
36
SE-18
< DTC/CIRCUIT DIAGNOSIS >
SEATBACK THERMAL ELECTRIC DEVICE
Is the inspection result normal?
YES
>> Replace climate controlled seat control unit. Refer to
SE-85, "Disassembly and Assembly"
.
NO
>> Repair or replace harness.
Climate controlled seat control unit
Ground
Continuity
Connector
Terminal
Driver side
B509
35
Not existed
36
Passenger side
B519
35
36
SEATBACK THERMAL ELECTRIC DEVICE SENSOR
SE-19
< DTC/CIRCUIT DIAGNOSIS >
C
D
E
F
G
H
I
K
L
M
A
B
SE
N
O
P
SEATBACK THERMAL ELECTRIC DEVICE SENSOR
Description
INFOID:0000000005236618
Measures seatback temperature.
Diagnosis Procedure
INFOID:0000000005236619
1.
CHECK SEATBACK THERMAL ELECTRIC DEVICE SENSOR CIRCUIT
1.
Turn ignition switch ON.
2.
Check voltage between climate controlled seat control unit harness connector and ground.
Is the inspection result normal?
YES
>> Seatback thermal electric device sensor circuit is OK.
NO
>> GO TO 2.
2.
CHECK SEATBACK THERMAL ELECTRIC DEVICE SENSOR HARNESS
1.
Turn ignition switch OFF.
2.
Disconnect climate controlled seat control unit connector and seatback thermal electric device connector.
3.
Check continuity between climate controlled seat control unit harness connector and seatback thermal
electric device harness connector.
4.
Check continuity between font ventilation seat control unit harness connector and ground.
Is the inspection result normal?
YES
>> GO TO 3.
NO
>> Repair or replace harness.
3.
CHECK SEATBACK THERMAL ELECTRIC DEVICE SENSOR
Check resistance between seatback thermal electric device connector.
(+)
(–)
Condition
Voltage (V)
(Approx.)
Climate controlled seat control unit
Connector
Terminal
Driver side
B507
37
Ground
Climate controlled seat
operated
1 - 5
Passenger side
B517
Climate controlled seat control unit
Seatback thermal electric device
Continuity
Connector
Terminal
Connector
Terminal
Driver side
B507
37
B504
37
Existed
38
38
Passenger side
B517
37
B514
37
38
38
Climate controlled seat control unit
Ground
Continuity
Connector
Terminal
Driver side
B507
37
Not existed
38
Passenger side
B517
37
38
Seatback thermal electric device
Terminal
Resistance
(K
Ω
)
(Approx.)
Connector
Driver side
B504
37
38
1
Passenger side
B514
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