Infiniti F50. Manual — part 795
CLIMATE CONTROLLED SEAT
SE-171
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L
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A
B
SE
●
The climate controlled seat system is downed when the temperature sensor set as the seat cushion and
the seat back's thermal electric device machine detects 20
°
C (68
°
F) or more of mutual differences of tem-
perature.
Climate Controlled Relay Power Supply Circuit Check
EIS003SE
1.
CHECK FUSE
Check 10A fuse [No. 1, located in fuse block (J/B)]
NOTE:
Refer to
SE-161, "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
161, "Component Parts and Harness Connector Location"
2.
CHECK SEAT RELAY POWER SUPPLY CIRCUIT
1.
Turn ignition switch OFF.
2.
Disconnect climate controlled seat relay connector.
3.
Turn ignition switch ON.
4.
Check voltage between climate controlled seat relay harness
connector E76 terminal 2 (W/G) 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
1.
Turn ignition switch OFF.
2.
Remove climate controlled seat relay.
3.
Check continuity between terminals 3 and 5, 6 and 7.
OK or NG
OK
>> GO TO 4.
NG
>> Replace climate controlled seat relay.
Con-
nector
Terminal
(Wire color)
Condition
Voltage (V)
(+)
(–)
E76
2 (W/G)
Ground
Turn ignition switch ON.
Battery voltage
Turn ignition switch OFF.
0
PIIB0386E
Terminal
Condition
Continuity
(+)
(-)
3
5
12V direct current supply
between terminals 1 and 2
YES
No current supply
NO
6
7
12V direct current supply
between terminals 1 and 2
YES
No current supply
NO
SEC202B
SE-172
CLIMATE CONTROLLED SEAT
4.
CHECK CLIMATE CONTROLLED SEAT CONTROL UNIT GROUND CIRCUIT
Check continuity between climate controlled seat relay connector
E76 terminal 1 (B) and ground.
OK or NG
OK
>> Climate controlled seat relay power supply circuit check
is OK.
NG
>> Repair or replace harness between climate controlled
seat relay and ground.
Driver Side Climate Controlled Seat Control Unit Power Supply and Ground Cir-
cuit Inspection
EIS003SF
1.
CHECK FUSE
Check 15A fuse [No. 71, located in fuse, fusible link and relay unit]
NOTE:
Refer to
SE-161, "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
161, "Component Parts and Harness Connector Location"
.
2.
CHECK CLIMATE CONTROLLED SEAT CONTROL UNIT POWER SUPPLY CIRCUIT 1
1.
Turn ignition switch OFF.
2.
Disconnect climate controlled seat relay.
3.
Check voltage between climate controlled seat relay connector
E76 terminal 5 (R) and ground.
OK or NG
OK
>> GO TO 3.
NG
>> Repair or replace harness between fuse, “fusible link
and relay unit” and climate controlled seat relay.
3.
CHECK CLIMATE CONTROLLED SEAT RELAY
1.
Remove climate controlled seat relay.
2.
Check continuity between terminals 3 and 5.
OK or NG
OK
>> GO TO 4.
NG
>> Replace climate controlled seat relay.
1 (B)
−
Ground
: Continuity should exist
PIIB0388E
5 (R)
−
Ground
: Battery voltage
PIIB0389E
Terminal
Condition
Continuity
(+)
(-)
3
5
12V direct current supply
between terminals 1 and 2
YES
No current supply
NO
SEC202B
CLIMATE CONTROLLED SEAT
SE-173
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A
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4.
CHECK CLIMATE CONTROLLED SEAT CONTROL UNIT POWER SUPPLY CIRCUIT 2
1.
Turn ignition switch OFF.
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
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 (J/B) and
climate 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 B158 terminal JC (B) and ground.
OK or NG
OK
>> Driver side climate controlled seat control unit power
supply 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)
(+)
(–)
B158
JB (W/G)
Ground
Turn ignition switch ON.
Battery voltage
Turn ignition switch OFF.
0
PIIA3384E
Con-
nector
Terminal
(Wire color)
Condition
Voltage (V)
(Approx)
(+)
(–)
B158
JD (W/R)
Ground
Turn ignition switch ON.
Battery voltage
Turn ignition switch OFF.
0
PIIA3385E
JC (B)
−
Ground
: Continuity should exist
PIIA3335E
SE-174
CLIMATE CONTROLLED SEAT
Passenger Side Climate Controlled Seat Control Unit Power Supply Circuit
Inspection
EIS003TX
1.
CHECK FUSE
Check 10A fuse [No. 72, located in fuse, fusible link and relay unit]
NOTE:
Refer to
SE-161, "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
161, "Component Parts and Harness Connector Location"
.
2.
CHECK CLIMATE CONTROLLED SEAT CONTROL UNIT POWER SUPPLY CIRCUIT 1
1.
Turn ignition switch OFF.
2.
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, fusible link
and relay unit” and climate controlled seat relay.
3.
CHECK CLIMATE CONTROLLED SEAT RELAY
1.
Remove climate controlled seat relay.
2.
Check continuity between terminals 6 and 7.
OK or NG
OK
>> GO TO 4.
NG
>> Replace air conditioning seat relay.
7 (L)
−
Ground
: Battery voltage
PIIB0386E
Terminal
Condition
Continuity
(+)
(-)
6
7
12V direct current supply
between terminals 1 and 2
YES
No current supply
NO
SEC202B
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