Infiniti M45 (Y34). Manual — part 775
CLIMATE CONTROLLED SEAT
SE-121
C
D
E
F
G
H
J
K
L
M
A
B
SE
Seat Cushion Thermal Electric Device Sensor Circuit Inspection
AIS002CE
1.
CHECK SEAT CUSHION THERMAL ELECTRIC DEVICE HARNESS
1.
Turn ignition switch OFF.
2.
Disconnect climate controlled seat control unit connector and seat cushion thermal electric device con-
nector.
3.
Check continuity between climate controlled seat control unit
connector B159 (driver side), B359 (passenger side) terminal
J17 (B/R), J18 (G/R) and seat cushion thermal electric device
dial connector B154 (driver side), B354 (passenger side) termi-
nal J17 (B/R), J18 (G/R).
4.
Check continuity between climate controlled seat control unit
connector B159 (driver side), B359 (passenger side) terminal
J17 (B/R), J18 (G/R) and ground.
OK or NG
OK
>> GO TO 2.
NG
>> Repair or replace harness between climate controlled seat control unit and seat cushion thermal
electric device.
2.
CHECK SEAT CUSHION THERMAL ELECTRIC DEVICE SENSOR
●
Connect climate controlled seat control unit connector and seat cushion thermal electric device connector.
●
Turn ignition switch ON.
●
Check voltage between seat cushion thermal electric device
connector B154 (driver side), B354 (passenger side) terminal
J18 (G/R) and ground.
OK or NG
OK
>> Seat cushion thermal electric device sensor circuit
inspection is OK.
NG
>> Replace seat cushion thermal electric device.
J17 (B/R)
−
J17 (B/R)
: Continuity should exist.
J18 (G/R)
−
J18 (G/R)
: Continuity should exist.
J17 (B/R)
−
Ground
: Continuity should not exist.
J18 (G/R)
−
Ground
: Continuity should not exist.
PIIA3337E
J18 (G/R)
−
Ground
: 0.5V
−
4V (Approx.)
PIIA3336E
SE-122
CLIMATE CONTROLLED SEAT
Seatback Thermal Electric Device Circuit Inspection
AIS002CF
1.
CHECK SEATBACK THERMAL ELECTRIC DEVICE 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
connector B159 (driver side), B359 (passenger side) terminal
J11 (B/R), J12 (PU/W) and seatback thermal electric device con-
nector B153 (driver side), B353 (passenger side) terminal J11
(B/R), J12 (PU/W).
4.
Check continuity between climate controlled seat control unit
connector B159 (driver side), B359 (passenger side) terminal
J11 (B/R), J12 (PU/W) and ground.
OK or NG
OK
>> GO TO 2.
NG
>> Repair or replace harness between climate controlled seat control unit and seatback thermal elec-
tric device.
2.
CHECK SEATBACK THERMAL ELECTRIC DEVICE POWER SUPPLY CIRCUIT
1.
Connect climate controlled seat control unit connector and seatback thermal electric device connector.
2.
Turn ignition switch ON.
3.
Check voltage between climate controlled seat control unit con-
nector and ground.
OK or NG
OK
>> Seatback thermal electric device circuit check is OK.
NG
>> Replace seat cushion thermal electric device.
J11 (B/R)
−
J11 (B/R)
: Continuity should exist.
J12 (PU/W)
−
J12 (PU/W)
: Continuity should exist.
J11 (B/R)
−
Ground
: Continuity should not exist.
J12 (PU/W)
−
Ground
: Continuity should not exist.
PIIA3343E
Connector
Terminal
(Wire color)
Condition
Voltage (V)
(Approx.)
(+)
(–)
B159
(Driver side),
B359
(Passenger side)
J11(B/R)
Ground
Turn ignition switch ON,
climate controlled seat
switch turn “HEAT”.
Battery
voltage
Turn ignition switch OFF.
0
J12
(PU/W)
Ground
Turn ignition switch ON,
climate controlled seat
switch turn “COOL”.
Battery
voltage
Turn ignition switch OFF.
0
PIIA3344E
CLIMATE CONTROLLED SEAT
SE-123
C
D
E
F
G
H
J
K
L
M
A
B
SE
Seatback Thermal Electric Device Sensor Circuit Inspection
AIS002CG
1.
CHECK SEATBACK THERMAL ELECTRIC DEVICE 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
connector B159 (driver side), B359 (passenger side) terminal
J19 (L/OR), J20 (R/L) and seatback thermal electric device con-
nector B153 (driver side), B353 (passenger side) terminal J19
(L/OR), J20 (R/L).
4.
Check continuity between climate controlled seat control unit
connector B159 (driver side), B359 (passenger side) terminal
J19 (L/OR), J20 (R/L) and ground.
OK or NG
OK
>> GO TO 2.
NG
>> Repair or replace harness between climate controlled seat control unit and seatback thermal elec-
tric device.
2.
CHECK SEAT CUSHION THERMAL ELECTRIC DEVICE SENSOR
1.
Connect climate controlled seat control unit connector and seatback thermal electric device connector.
2.
Turn ignition switch ON.
3.
Check voltage between seat cushion thermal electric device
connector B153 (driver side), B353 (passenger side) terminal
J19 (L/OR) and ground.
OK or NG
OK
>> Seatback thermal electric device sensor circuit inspec-
tion is OK.
NG
>> Replace seatback thermal electric device.
J19 (L/OR)
−
J19 (L/OR)
: Continuity should exist.
J20 (R/L)
−
J20 (R/L)
: Continuity should exist.
J19 (L/OR)
−
Ground
: Continuity should not exist.
J20 (R/L)
−
Ground
: Continuity should not exist.
PIIA3341E
J19 (L/OR)
−
Ground
: 0.5V
−
4V (Approx)
PIIA3340E
SE-124
CLIMATE CONTROLLED SEAT
Blower Motor Power Supply Circuit Inspection
AIS002CH
1.
CHECK BLOWER MOTOR HARNESS
1.
Turn ignition switch OFF.
2.
Disconnect climate controlled seat control unit and blower motor connector.
3.
Check continuity between climate controlled seat control unit
connector B159 (driver side), B359 (passenger side) terminal
J10 (PU) and blower motor connector B155 (driver side), B355
(passenger side) terminal J10 (PU).
4.
Check continuity between climate controlled seat control unit
connector B159 (driver side), B359 (passenger side) terminal
J10 (PU) and ground.
OK or NG
OK
>> GO TO 2.
NG
>> Repair or replace harness between climate controlled seat control unit and blower motor.
2.
CHECK BLOWER MOTOR POWER SUPPLY CIRCUIT
1.
Connect climate controlled seat control unit connector and blower motor connector.
2.
Turn ignition switch ON.
3.
Check voltage between climate controlled seat control unit con-
nector and ground.
OK or NG
OK
>> GO TO 3.
NG
>> Replace climate controlled seat control unit.
3.
CHECK BLOWER MOTOR GROUND HARNESS
1.
Turn ignition switch OFF.
2.
Disconnect climate controlled seat control unit connector and cli-
mate controlled blower motor connector.
3.
Check continuity between climate controlled seat control unit
connector B159 (driver side), B359 (passenger side) terminal J3
(GY) and climate controlled blower motor connector B155
(driver side), B355 (passenger side) terminal J3 (GY).
4.
Check continuity between climate controlled seat control unit
connector B159 (driver side), B359 (passenger side) terminal J3
(GY) and ground.
J10 (PU)
−
J10 (PU)
: Continuity should exist.
J10 (PU)
−
Ground
: Continuity should not exist.
PIIA3326E
Connector
Terminal
(Wire color)
Condition
Voltage (V)
(Approx.)
(+)
(–)
B159
(Driver side),
B359
(Passenger side)
J10(PU)
Ground
Turn ignition switch ON
Climate controlled seat
switch “HEAT” or “COOL”.
6 – 12
Turn ignition switch OFF.
0
PIIA3325E
J3 (GY)
−
J3 (GY)
: Continuity should exist.
J3 (GY)
−
Ground
: Continuity should not exist.
PIIA3327E
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