Infiniti FX35, FX50 (S51). Manual — part 1626
SE-24
< DTC/CIRCUIT DIAGNOSIS >
SEAT CUSHION THERMAL ELECTRIC DEVICE SENSOR
Is the inspection result normal?
YES
>> Replace climate controlled seat control unit. Refer to
SE-84, "Removal and Installation"
NO
>> Replace seat cushion thermal electric device.
Seat cushion thermal electric device
Terminal
Resistance
(K
Ω
)
(Approx.)
Connector
Driver side
B505
33
34
1
Passenger side
B515
CLIMATE CONTROLLED SEAT BLOWER MOTOR
SE-25
< DTC/CIRCUIT DIAGNOSIS >
C
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CLIMATE CONTROLLED SEAT BLOWER MOTOR
Description
INFOID:0000000005236625
• Sends air flow to the seat cushion and seatback.
Component Function Check
INFOID:0000000005236626
1.
CHECK FUNCTION
When turning the climate controlled seat switch to the HEAT and COOL mode position, check that the climate
controlled seat blower is operated in each specific mode.
Is the inspection result normal?
YES
>> Climate controlled seat blower motor is OK.
NO
>> Refer to
Diagnosis Procedure
INFOID:0000000005236627
1.
CHECK CLIMATE CONTROLLED SEAT BLOWER MOTOR POWER SUPPLY
1.
Turn ignition switch ON.
2.
Check voltage between climate controlled seat blower motor harness connector and ground.
Is the inspection result normal?
YES
>> GO TO 3.
NO
>> GO TO 2.
2.
CHECK CLIMATE CONTROLLED BLOWER MOTOR POWER SUPPLY CIRCUIT
1.
Turn ignition switch OFF.
2.
Disconnect climate controlled blower motor connector and climate controlled seat control unit connector.
3.
Check continuity between climate controlled seat blower motor harness connector and climate controlled
seat control unit harness connector.
4.
Check continuity between climate controlled seat blower motor harness connector and ground.
Is the inspection result normal?
YES
>> Replace climate controlled seat control unit. Refer to
SE-85, "Disassembly and Assembly"
NO
>> Repair or replace harness.
(+)
(–)
Condition
Voltage (V)
(Approx.)
Climate controlled seat blower motor
Connector
Terminal
Driver side
B506
39
Ground
Climate controlled seat
switch
HEAT mode
Battery voltage
COOL mode
Other than above
0
Passenger side
B516
Climate controlled seat
switch
HEAT mode
Battery voltage
COOL mode
Other than above
0
Climate controlled seat blower motor
Climate controlled seat control unit
Continuity
Connector
Terminal
Connector
Terminal
Driver side
B506
39
B507
39
Existed
Passenger side
B516
B517
Climate controlled seat blower motor
Ground
Continuity
Connector
Terminal
Driver side
B506
39
Not existed
Passenger side
B516
SE-26
< DTC/CIRCUIT DIAGNOSIS >
CLIMATE CONTROLLED SEAT BLOWER MOTOR
3.
CHECK CLIMATE CONTROLLED SEAT BLOWER MOTOR SPEED CONTROL SIGNAL
Check voltage between climate controlled seat blower motor harness connector and ground.
Is the inspection result normal?
YES
>> GO TO 5.
NO
>> GO TO 4.
4.
CHECK CLIMATE CONTROLLED SEAT BLOWER MOTOR SPEED CONTROL SIGNAL CIRCUIT
1.
Turn ignition switch OFF.
2.
Disconnect climate controlled seat blower motor connector and climate controlled seat control unit con-
nector.
3.
Check continuity between climate controlled seat blower motor harness connector and climate controlled
seat control unit harness connector.
4.
Check continuity between climate controlled seat blower motor harness connector and ground.
Is the inspection result normal?
YES
>> Replace climate controlled seat control unit. Refer to
SE-85, "Disassembly and Assembly"
.
NO
>> Repair or replace harness.
5.
CHECK CLIMATE CONTROLLED SEAT BLOWER MOTOR GROUND CIRCUIT
1.
Turn ignition switch OFF.
2.
Disconnect climate controlled seat blower motor and climate controlled seat control unit connector.
3.
Check continuity between climate controlled seat blower motor harness connector and climate controlled
seat control unit harness connector.
4.
Check continuity between climate controlled seat blower motor harness connector and ground.
(+)
(–)
Condition
Voltage (V)
(Approx.)
Climate controlled seat blower motor
Connector
Terminal
Driver side
B506
40
Ground
Climate controlled seat
HEAT mode
8.5 - 9
LO COOL
8
MID COOL
9
Passenger side
B516
HI COOL
12
Other than above
0
Climate controlled seat blower motor
Climate controlled seat control unit
Continuity
Connector
Terminal
Connector
Terminal
Driver side
B506
40
B507
40
Existed
Passenger side
B516
B517
Climate controlled seat blower motor
Ground
Continuity
Connector
Terminal
Driver side
B506
40
Not existed
Passenger side
B516
Climate controlled seat blower motor
Climate controlled seat control unit
Continuity
Connector
Terminal
Connector
Terminal
Driver side
B506
41
B507
41
Existed
Passenger side
B516
B517
CLIMATE CONTROLLED SEAT BLOWER MOTOR
SE-27
< DTC/CIRCUIT DIAGNOSIS >
C
D
E
F
G
H
I
K
L
M
A
B
SE
N
O
P
Is the inspection result normal?
YES
>> GO TO 6.
NO
>> Repair or replace harness.
6.
CHECK CLIMATE CONTROLLED SEAT BLOWER MOTOR GROUND
1.
Connect climate controlled seat blower motor connector and climate controlled seat control unit connec-
tor.
2.
Check continuity between climate controlled seat blower motor harness connector and ground.
Is the inspection result normal?
YES
>> Replace climate controlled seat control unit. Refer to
SE-85, "Disassembly and Assembly"
NO
>> Replace climate controlled seat blower motor. Refer to
SE-85, "Disassembly and Assembly"
Climate controlled seat blower motor
Ground
Continuity
Connector
Terminal
Driver side
B506
41
Not existed
Passenger side
B516
Climate controlled seat blower motor
Ground
Continuity
Connector
Terminal
Driver side
B506
41
Existed
Passenger side
B516
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