Infiniti M45 (Y34). Manual — part 773
CLIMATE CONTROLLED SEAT
SE-113
C
D
E
F
G
H
J
K
L
M
A
B
SE
Passenger Side Climate Controlled Seat Control Unit Power Supply Circuit
Inspection
AIS002C7
1.
CHECK FUSE
Check if any of the following fuses for Fuse, fusible link and relay unit block (J/B) are blown.
NOTE:
Refer to
SE-100, "Component Parts and Harness Connector Location"
.
OK or NG
OK
>> GO TO 2.
NG
>> If fuse is blown, be sure to eliminate cause of malfunction before installing new fuse, refer to
100, "Component Parts and Harness Connector Location"
2.
CHECK CLIMATE CONTROLLED SEAT CONTROL UNIT POWER SUPPLY CIRCUIT1
1.
Turn ignition switch OFF.
2.
Disconnect climate controlled seat relay.
3.
Check voltage between climate controlled seat relay connector
E76 terminal 7 (L) and ground.
OK or NG
OK
>> GO TO 3.
NG
>> Repair or replace harness between fuse block (J/B) and
climate controlled seat relay.
3.
CHECK CLIMATE CONTROLLED SEAT RELAY
Check continuity between climate controlled seat relay terminals 6
and 7.
OK or NG
OK
>> GO TO 4.
NG
>> Replace climate controlled seat relay.
COMPONENT PARTS
AMPERE
FUSE NO.
Fuse, fusible link and relay unit
15A
71
7 (L)
−
Ground
: Battery voltage
PIIA3317E
Terminal
Condition
Continuity
6
7
12V direct current supply
between terminals 1 and 2
Yes
No current supply
No
SEC202B
SE-114
CLIMATE CONTROLLED SEAT
4.
CHECK CLIMATE CONTROLLED SEAT CONTROL UNIT POWER SUPPLY CIRCUIT 2
1.
Connect climate controlled seat relay.
2.
Disconnect climate controlled seat control unit connector.
3.
Turn ignition switch ON.
4.
Check voltage between climate controlled seat control unit con-
nector and ground.
OK or NG
OK
>> GO TO 5.
NG
>> Repair or replace harness between climate controlled seat relay and climate controlled seat con-
trol unit.
5.
CHECK CLIMATE CONTROLLED SEAT CONTROL UNIT POWER SUPPLY CIRCUIT 3
Check voltage between climate controlled seat control unit connec-
tor and ground.
OK or NG
OK
>> GO TO 6.
NG
>> Repair or replace harness between fuse block and cli-
mate controlled seat control unit.
6.
CHECK CLIMATE CONTROLLED SEAT CONTROL UNIT GROUND CIRCUIT
1.
Turn ignition switch OFF.
2.
Check continuity between climate controlled seat control unit
connector B358 terminal JC (B) and ground.
OK or NG
OK
>> Passenger side climate controlled seat unit power sup-
ply and ground circuit check is OK.
NG
>> Repair or replace harness between climate controlled
seat control unit and ground.
Con-
nector
Terminal
(Wire color)
Condition
Voltage (V)
(Approx.)
(+)
(–)
B358
JD(W/G)
Ground
Turn ignition switch ON.
Battery voltage
Turn ignition switch OFF.
0
PIIA3385E
Con-
nector
Terminal
(Wire color)
Condition
Voltage (V)
(Approx.)
(+)
(–)
B358
JB(W/R)
Ground
Turn ignition switch ON.
Battery voltage
Turn ignition switch OFF.
0
PIIA3384E
JC (B)
−
Ground
: Continuity should exist.
PIIA3335E
CLIMATE CONTROLLED SEAT
SE-115
C
D
E
F
G
H
J
K
L
M
A
B
SE
Climate Controlled Seat “HEAT” Switch Circuit Inspection
AIS002C8
1.
CHECK CLIMATE CONTROLLED SEAT HEAT SWITCH HARNESS CIRCUIT
1.
Turn ignition switch OFF.
2.
Disconnect climate controlled seat control unit and climate con-
trolled seat switch connector.
3.
Check continuity between climate controlled seat control unit
connector B159 (driver side), B359 (passenger side) terminal J6
(PU) and climate controlled seat switch connector B156 (driver
side), B356 (passenger side) terminal J6 (PU).
4.
Check continuity between climate controlled seat control unit
connector B159 (driver side), B359 (passenger side) terminal J6
(PU) and ground.
OK or NG
OK
>> GO TO 2.
NG
>> Repair or replace harness between climate controlled seat control unit and climate controlled seat
switch.
2.
CHECK CLIMATE CONTROLLED SEAT HEAT SWITCH POWER SUPPLY CIRCUIT
1.
Connect climate controlled seat control unit connector and climate controlled seat switch.
2.
Turn ignition switch ON.
3.
Turn climate controlled seat switch “HEAT”.
4.
Check voltage between climate controlled seat control unit con-
nector and body ground.
OK or NG
OK
>> Replace climate controlled seat control unit.
NG
>> GO TO 3.
3.
CHECK CLIMATE CONTROLLED SEAT TEMPERATURE DIAL
1.
Turn ignition switch OFF.
2.
Disconnect climate controlled seat switch connector.
3.
Check continuity between climate controlled seat switch.
OK or NG
OK
>> Check the condition of the harness and the connector.
NG
>> Replace climate controlled seat switch.
J6 (PU)
−
J6 (PU)
: Continuity should exist.
J6 (PU)
−
Ground
: Continuity should not exist.
PIIA3331E
Connector
Terminal
(Wire color)
Condition
Voltage (V)
(Approx.)
(+)
(–)
B156
(Driver side),
B356
(Passenger side)
J6 (PU)
Ground
Turn ignition switch ON.
Turn climate controlled
seat switch “HEAT”.
0
Climate controlled seat
switch OFF.
Battery voltage
PIIA3330E
Terminal
Condition
Continuity
J6
JCA
Climate controlled seat switch
HEAT position.
Yes
Climate controlled seat switch
OFF.
No
PIIA4127E
SE-116
CLIMATE CONTROLLED SEAT
Climate Controlled Seat “COOL” Switch Circuit Inspection
AIS002C9
1.
CHECK CLIMATE CONTROLLED SEAT COOL SWITCH HARNESS CIRCUIT
1.
Turn ignition switch OFF.
2.
Disconnect climate controlled seat control unit and climate con-
trolled seat switch connector.
3.
Check continuity between climate controlled seat control unit
connector B159 (driver side), B359 (passenger side) terminal
J16 (R) and climate controlled seat switch connector B156
(driver side), B356 (passenger side) terminal J16 (R).
4.
Check continuity between climate controlled seat control unit
connector B159 (driver side), B359 (passenger side) terminal
J16 (R) and ground.
OK or NG
OK
>> GO TO 2.
NG
>> Repair or replace harness between climate controlled seat control unit and climate controlled seat
switch.
2.
CHECK CLIMATE CONTROLLED SEAT COOL SWITCH POWER SUPPLY CIRCUIT
1.
Connect climate controlled seat control unit connector and climate controlled seat switch.
2.
Turn ignition switch ON.
3.
Turn climate controlled seat switch COOL.
4.
Check voltage between climate controlled seat control unit con-
nector and body ground.
OK or NG
OK
>> Replace climate controlled seat control unit.
NG
>> GO TO 3.
3.
CHECK CLIMATE CONTROLLED SEAT TEMPERATURE DIAL
1.
Turn ignition switch OFF.
2.
Disconnect climate controlled seat switch connector.
3.
Check continuity between climate controlled seat switch.
OK or NG
OK
>> Check the condition of the harness and the connector.
NG
>> Replace climate controlled seat switch.
J16 (R)
−
J16 (R)
: Continuity should exist.
J16 (R)
−
Ground
: Continuity should not exist.
PIIA3329E
Connector
Terminal
(Wire color)
Condition
Voltage (V)
(Approx.)
(+)
(–)
B156
(Driver side),
B356
(Passenger side)
J16 (R)
Ground
Turn ignition switch ON.
Turn climate controlled
seat switch COOL.
0
Climate controlled seat
switch OFF.
Battery voltage
PIIA3328E
Terminal
Condition
Continuity
J16
JCA
Climate controlled seat switch
COOL position.
Yes
Climate controlled seat switch
OFF.
No
PIIA4128E
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