Infiniti M45 (Y34). Manual — part 772
CLIMATE CONTROLLED SEAT
SE-109
C
D
E
F
G
H
J
K
L
M
A
B
SE
Trouble Diagnosis Symptom Chart
AIS002C4
●
Check that other systems using the signal of the following systems operate normally.
NOTE:
●
The climate controlled seat blower keep low speed for approximately 60 seconds after turning the switch
or the climate controlled dial.
●
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
temperature.
Symptom
Diagnoses / service procedure
Refer to page
Climate controlled seat do not operate (Neither the driver' s
side nor passenger's side operate).
1. Climate controlled seat relay power supply
circuit inspection
Driver side climate controlled seat do not operate (Passenger
side is operate).
1. Driver side climate controlled seat control
unit power supply circuit inspection
2. Climate controlled seat temperature dial cir-
cuit inspection
3. Climate controlled seat switch ground circuit
inspection
4. Blower motor power supply circuit inspec-
tion
5. Replace blower motor assembly
–
Passenger side climate controlled seat do not operate (Driver
side is operate)
1. Passenger side climate controlled seat con-
trol unit power supply circuit inspection
2. Climate controlled seat temperature dial cir-
cuit inspection
3. Climate controlled seat switch ground circuit
inspection
4. Blower motor power supply circuit inspec-
tion
5. Replace blower motor assembly
–
Blower motor speed cannot adjust.
1. Climate controlled temperature dial inspec-
tion
2. Climate controlled seat control unit inspec-
tion
3. Replace blower motor assembly
—
The climate controlled seat dose not operates when the switch
is done in “HEAT” (The wind rises when the switch is made
(“COOL”).
1. Climate controlled seat “HEAT” switch cir-
cuit inspection
The climate controlled seat dose not operates when the switch
is done in “COOL” (The wind rises when the switch is made
“HEAT”).
1. Climate controlled seat “COOL” switch cir-
cuit inspection
When the climate controlled seat switch is turned on, operation
stopped at once (When the climate controlled seat switch is
mode “HEAT” or “COOL” after ignition switch is turned ON
again, the motor operates).
1. Seat cushion Thermal electric device sensor
circuit inspection
2. Seat cushion Thermal electric device circuit
inspection
3. Seatback Thermal electric device sensor
circuit inspection
4. Seatback Thermal electric device circuit
inspection
5. Blower motor speed control circuit inspec-
tion
6. Blower motor tachometer signal circuit
inspection
7. Replace Climate controlled seat control unit
–
SE-110
CLIMATE CONTROLLED SEAT
Climate Controlled Relay Power Supply Circuit Check
AIS002C5
1.
CHECK FUSE
Check if any of the following fuses for Fuse block (J/B) are blown.
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 SEAT RELAY POWER SUPPLY CIRCUIT
1.
Turn ignition switch OFF.
2.
Disconnect climate controlled seat relay connector.
3.
Check voltage between climate controlled seat relay 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
Check continuity between climate controlled relay terminals 3 and 5,
6 and 7.
OK or NG
OK
>> GO TO 4.
NG
>> Replace climate controlled seat relay.
COMPONENT PARTS
TERMINAL NO. (SIGNAL)
AMPERE
FUSE NO.
Fuse block (J/B)
2J (IGN power supply)
10A
1
Con-
nector
Terminal
(Wire color)
Condition
Voltage (V)
(Approx.)
(+)
(–)
E76
2 (W/G)
Ground
Turn ignition switch ON.
Battery voltage
Turn ignition switch OFF.
0
PIIA3318E
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
CLIMATE CONTROLLED SEAT
SE-111
C
D
E
F
G
H
J
K
L
M
A
B
SE
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 body ground.
Driver Side Climate Controlled Seat Control Unit Power Supply and Ground Cir-
cuit Inspection
AIS002C6
1.
CHECK FUSE
Check if any of the following fuses for Fuse, fusible link and relay unit (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 CIRCUIT 1
1.
Turn ignition switch OFF.
2.
Remove 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 and climate
controlled seat relay.
3.
CHECK CLIMATE CONTROLLED SEAT RELAY
Check continuity between climate controlled seat relay terminals 3
and 5.
OK or NG
OK
>> GO TO 4.
NG
>> Replace climate controlled seat relay.
1 (B)
−
Ground
: Continuity should exist.
PIIA3319E
COMPONENT PARTS
AMPERE
FUSE NO.
Fuse, fusible link and relay unit
15A
72
5 (R)
−
Ground
: Battery voltage
PIIA3316E
Terminal
Condition
Continuity
3
5
12V direct current supply
between terminals 1 and 2
Yes
No current supply
No
SEC202B
SE-112
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 (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
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.)
(+)
(–)
B158
JB(W/R)
Ground
Turn ignition switch ON.
Battery voltage
Turn ignition switch OFF.
0
PIIA3384E
JC (B)
−
Ground
: Continuity should exist.
PIIA3335E
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