Infiniti FX35, FX50 (S51). Manual — part 1623
SE-12
< DTC/CIRCUIT DIAGNOSIS >
POWER SUPPLY AND GROUND CIRCUIT
Is the fuse fusing?
YES
>> Replace the blown fuse after repairing the affected circuit if a fuse is blown.
NO
>> GO TO 2.
2.
CHECK CLIMATE CONTROLLED SEAT CONTROL UNIT POWER SUPPLY
1.
Turn ignition switch OFF.
2.
Disconnect climate controlled seat control unit (passenger side) connector.
3.
Turn ignition switch ON.
4.
Check voltage between climate controlled seat control unit (passenger side) harness connector and
ground.
Is the measurement value normal?
YES
>> GO TO 3.
NO
>> GO TO 4.
3.
CHECK GROUND CIRCUIT
Check continuity between harness connector and ground.
Does continuity exist?
YES
>> INSPECTION END
NO
>> Repair harness or connector.
4.
CHECK CLIMATE CONTROLLED SEAT CONTROL UNIT POWER SUPPLY CIRCUIT 1
1.
Turn ignition switch OFF.
2.
Disconnect climate controlled seat relay.
3.
Check continuity between climate controlled seat control unit (passenger side) harness connector and cli-
mate controlled seat relay harness connector.
4.
Check continuity between climate controlled seat control unit (driver side) harness connector and ground.
Is the measurement value normal?
YES
>> GO TO 5.
NO
>> Repair or replace harness or connector.
5.
CHECK CILMATE CONTROLLED SEAT RELAY POWER SUPPLY CIRCUIT 2
1.
Turn ignition switch ON.
2.
Check voltage between climate controlled seat relay harness connector and ground.
(+)
(
−
)
Voltage
(Approx.)
Climate controlled seat control unit (passenger side)
Connector
Terminal
B518
55
Ground
Battery voltage
B519
70
Climate controlled seat control unit (passenger side)
Ground
Continuity
Connector
Terminal
B519
56
Existed
Climate controlled seat control unit (passenger
side)
Climate controlled seat relay
Continuity
Connector
Terminal
Connector
Terminal
B518
55
M64
3
Existed
B519
70
Climate controlled seat control unit (driver side)
Ground
Continuity
Connector
Terminal
B518
55
Not existed
B519
70
POWER SUPPLY AND GROUND CIRCUIT
SE-13
< DTC/CIRCUIT DIAGNOSIS >
C
D
E
F
G
H
I
K
L
M
A
B
SE
N
O
P
Is the measurement value normal?
YES
>> GO TO 6.
NO
>> Repair or replace harness or connector.
6.
CHECK CLIMATE CONTROLLED SEAT RELAY
Check climate controlled seat relay.
Refer to
SE-13, "CLIMATE CONTROLLED SEAT CONTROL UNIT : Component Inspection"
Is the inspection result normal?
YES
>> GO TO 7.
NO
>> Replace climate controlled seat relay.
7.
CHECK CLIMATE CONTROLLED SEAT RELAY GROUND CIRCUIT
Check continuity between climate controlled seat relay harness connector and ground.
Does continuity exist?
YES
>> GO TO 8.
NO
>> Repair or replace harness.
8.
CHECK INTERMITTENT INCIDENT
GI-36, "Intermittent Incident"
.
>> INSPECTION END
CLIMATE CONTROLLED SEAT CONTROL UNIT : Component Inspection
INFOID:0000000005236610
1.
CHECK CLIMATE CONTROLLED SEAT RELAY
1.
Turn ignition switch OFF.
2.
Disconnect climate controlled seat relay.
3.
Check climate controlled seat relay.
Is the inspection result normal?
YES
>> INSPECTION END.
NO
>> Replace climate controlled seat relay.
Terminals
Voltage
(Approx.)
(+)
(
−
)
Climate controlled seat relay
Ground
Connector
Terminal
M64
2
Battery voltage
5
Climate controlled seat relay
Ground
Continuity
Connector
Terminal
M64
1
Existed
Climate con-
trolled seat relay
Condition
Continuity
Terminal
3
5
12 V direct current supply between ter-
minals 1 and 2.
Existed
No current supply
Not existed
6
7
12 V direct current supply between ter-
minals 1 and 2.
Existed
No current supply
Not existed
JMJIA2104ZZ
SE-14
< DTC/CIRCUIT DIAGNOSIS >
CLIMATE CONTROLLED SEAT SWITCH
CLIMATE CONTROLLED SEAT SWITCH
Description
INFOID:0000000005236611
Installed in the center console and transmits signals to climate controlled seat control unit in accordance with
the HEAT or COOL switch operation and the temperature switch operation.
Component Function Check
INFOID:0000000005236612
1.
CHECK FUNCTION
Check that climate controlled seat activates when operating climate controlled seat control switch.
Is the inspection result normal?
YES
>> Climate controlled seat switch is OK.
NO
>> Refer to
Diagnosis Procedure
INFOID:0000000005236613
1.
CHECK CLIMATE CONTROLLED SEAT CONTROL UNIT INPUT SIGNAL
1.
Turn ignition switch ON.
2.
Check voltage between climate controlled seat control unit harness connector and ground.
Is the inspection result normal?
YES
>> Climate controlled seat switch circuit is OK.
NO-1
>> HEAT or COOL mode is NG :GO TO 2.
NO-2
>> HEAT and COOL modes are NG : GO TO 3.
2.
CHECK CLIMATE CONTROLLED SEAT SWITCH CIRCUIT
1.
Turn ignition switch OFF.
2.
Disconnect climate controlled seat switch connector and climate controlled seat control unit connector.
3.
Check continuity between climate controlled seat switch harness connector and climate controlled seat
control unit harness connector.
(+)
(–)
Condition
Voltage (V)
(Approx.)
Climate controlled seat control unit
Connector
Terminal
Driver side
B508
6
Ground
Climate controlled seat
switch
LO COOL
0.8 - 1.5
MID COOL
1.6 - 2.5
HI COOL
2.6 - 4.2
OFF
0
16
Climate controlled seat
switch
LO HEAT
0.8 - 1.5
MID HEAT
1.6 - 2.5
HI HEAT
2.6 - 4.2
OFF
0
Passenger side
B518
6
Climate controlled seat
switch
LO COOL
0.8 - 1.5
MID COOL
1.6 - 2.5
HI COOL
2.6 - 4.2
OFF
0
16
Climate controlled seat
switch
LO HEAT
0.8 - 1.5
MID HEAT
1.6 - 2.5
HI HEAT
2.6 - 4.2
OFF
0
CLIMATE CONTROLLED SEAT SWITCH
SE-15
< DTC/CIRCUIT DIAGNOSIS >
C
D
E
F
G
H
I
K
L
M
A
B
SE
N
O
P
4.
Check continuity between climate controlled seat switch harness connector and ground.
Is the inspection result normal?
YES
>> GO TO 5.
NO
>> Repair or replace harness.
3.
CHECK CLIMATE CONTROLLED SEAT SWITCH POWER SUPPLY
1.
Turn ignition switch OFF.
2.
Disconnect climate controlled seat switch connector.
3.
Turn ignition switch ON.
4.
Check voltage between climate controlled seat switch harness connector and ground.
Is the inspection result normal?
YES
>> GO TO 5.
NO
>> GO TO 4.
4.
CHECK CLIMATE CONTROLLED SEAT SWITCH POWER SUPPLY CIRCUIT
1.
Turn ignition switch OFF.
2.
Disconnect climate controlled seat control unit connector.
3.
Check continuity between climate controlled seat switch harness connector and climate controlled seat
control unit harness connector.
4.
Check continuity between climate controlled seat switch harness connector and ground.
Is the inspection result normal?
Climate controlled seat switch
Climate cotrolled seat control unit
Continuity
Connector
Terminal
Connector
Terminal
Driver side
COOL
M177
2
B508
6
Existed
HEAT
3
16
Passenger side
COOL
M178
2
B518
6
HEAT
3
16
Climate controlled seat switch
Ground
Continuity
Connector
Terminal
Driver side
COOL
M177
2
Not existed
HEAT
3
Passenger side
COOL
M178
2
HEAT
3
(+)
(–)
Voltage (V)
(Approx.)
Climate controlled seat switch
Connector
Terminal
Driver side
M177
1
Ground
Battery voltage
Passenger side
M178
1
Climate controlled seat switch
Climate cotrolled seat control unit
Continuity
Connector
Terminal
Connector
Terminal
Driver side
M177
1
B508
21
Existed
Passenger side
M178
1
B518
21
Climate controlled seat switch
Ground
Continuity
Connector
Terminal
Driver side
M177
1
Not existed
Passenger side
M178
1
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