MOTOR INFINITI M35 2007 Factory Service Manual

SE-124
CLIMATE CONTROLLED SEAT
Revision: 2007 April2007 M35/M45
Terminal and Reference Value for Climate Controlled Seat Control UnitNIS0027L
Te r -
minalWire
ColorItemSignal
Input/
OutputConditionVoltage (V)
(Approx)
2 R/Y Ignition switch power supply Input Ignition switch ON or START Battery voltage
3 B Ground — — 0
4 R/Y Ignition switch power supply Input Ignition switch ON or START Battery voltage
5G/RSeat cushion thermal electric
device power supply (HEAT)InputIgnition switch
ON or STARTClimate controlled
seat switch selectHEAT or
COOL0 – Battery
voltage
OFF 0
6G/BSeat cushion thermal electric
device power supply (COOL)InputIgnition switch
ON or STARTClimate controlled
seat switch select COOL or
HEAT 0 – Battery
voltage
OFF 0
7 B/R Blower motor ground — — 0
8 LG/R HEAT switch indicator signal OutputIgnition switch
ON or STARTClimate controlled
seat switch select HEAT Battery voltage
OFF 0
9 LG/B COOL switch indicator signal OutputIgnition switch
ON or STARTClimate controlled
seat switch select COOL Battery voltage
OFF 0
10 Y/R HEAT switch signal InputIgnition switch
ON or STARTClimate controlled
seat switch select HI HEAT 2.6 – 3.5
MID HEAT 1.6 – 2.5
LO HEAT 0.5 – 1.5
OFF 0
11 B / RClimate controlled seat switch
power supplyInput Ignition switch ON or START Battery voltage
14 V/W Blower motor power supply Input Ignition switch ON or START Battery voltage
15 W/RSeatback thermal electric device
power supply (HEAT) InputIgnition switch
ON or STARTClimate controlled
seat switch select HEAT or
COOL0 – Battery
voltage
OFF 0
16 W/BSeatback thermal electric device
power supply (COOL) InputIgnition switch
ON or STARTClimate controlled
seat switch select COOL or
HEAT 0 – Battery
voltage
OFF 0
17 R/B Blower motor speed control signal InputIgnition switch
ON or STARTClimate controlled
seat switch select HEAT or
COOL4.5 – 8.0
OFF 0
18 V Blower motor tachometer signal OutputIgnition switch
ON or STARTClimate controlled
seat switch select HEAT or
COOL4.5 – 8.0
OFF Battery voltage
20 Y/G COOL switch signal InputIgnition switch
ON or STARTClimate controlled
seat switch select HI COOL 2.6 – 3.5
MID COOL 1.6 – 2.5
LO COOL 0.5 – 1.5
OFF 0
21 GR/LSeat cushion thermal electric
device sensor ground— Ignition switch ON 0
22 GR/RSeat cushion thermal electric
device sensor signalInputBlower motor operated 0.5 – 4
Ignition switch OFF 0

CLIMATE CONTROLLED SEAT
SE-125
C
D
E
F
G
H
J
K
L
MA
B
SE
Revision: 2007 April2007 M35/M45
Work FlowNIS0027M
1. Check the symptom and customer's requests.
2. Understand the outline of system. Refer to SE-114, "
System Description" .
3. Perform the preliminary check. Refer toSE-126, "
Preliminary Check" .
4. According to the trouble diagnosis chart, repair or replace the cause of the malfunction. Refer to SE-126,
"Trouble Diagnoses Symptom Chart" .
5. Does climate controlled seat operate normally? YES: GO TO 6, NO: GO TO 4.
6. INSPECTION END.
23 L/RSeatback thermal electric device
sensor signalInputBlower motor operated 0.5 – 4
Ignition switch OFF 0
24 LSeatback thermal electric device
sensor ground— Ignition switch ON 0 Te r -
minalWire
ColorItemSignal
Input/
OutputConditionVoltage (V)
(Approx)

SE-126
CLIMATE CONTROLLED SEAT
Revision: 2007 April2007 M35/M45
Trouble Diagnoses Symptom ChartNIS0027O
NOTE:
Make sure other systems using the signal of the following systems operate normally.
NOTE:

The climate controlled seat blower keep low speed for approximately 60 seconds turning the switch.

The climate controlled seat system is downed when the temperature sensor set as the seat cushion and
the seatback's thermal electric device machine detects 20 °C (68°F) or more of mutual differences of tem-
perature.
Preliminary CheckNIS0027N
1. CHECK DUCT AND FILTER
Check the following.

Is that there no foreign body in the blower motor filter.

Is that there no foreign body in the duct.
OK or NG
OK >> Preliminary check is OK.
NG >> The foreign body is removed.
Symptom Diagnoses / service procedureRefer to
page
Climate controlled seat do not operate
(Neither the driver's side nor passenger's side operate).1. Check climate controlled seat control unit power supply
circuit SE-127
All the driver side or passenger side climate controlled seat
do not operate.1. Check climate controlled seat control unit power supply
and ground circuit SE-1282. Check climate controlled seat switch power supply circuit SE-131
3. Check climate controlled seat blower motor circuit SE-141
4. Replace climate controlled seat control unitSE-114
Climate controlled seat blower motor speed cannot adjust.1. Check climate controlled seat switch power supply circuit SE-1312. Check climate controlled seat switch circuit SE-132
3. Check climate controlled seat control unit SE-143
4. Replace climate controlled seat blower motorSE-114
The climate controlled seat dose not operates when the
switch is done in HEAT or COOL.Check climate controlled seat switch circuit SE-132
When the climate controlled seat switch is turned on,
operation stops at nose (When the climate controlled seat
switch is in HEAT or COOL mode after ignition switch is
turned ON again, the motor operates).1. Check seat cushion thermal electric device sensor circuit SE-1382. Check seat cushion thermal electric device circuit SE-136
3. Check seatback thermal electric device sensor circuitSE-140
4. Check seatback thermal electric device circuit SE-137
5. Check climate controlled seat blower motor circuitSE-141
6. Replace Climate controlled seat control unitSE-114
The climate controlled seat switch indicator do not operated
with HEAT or COOL positionCheck climate controlled seat switch indicator circuit SE-134

SE-138
CLIMATE CONTROLLED SEAT
Revision: 2007 April2007 M35/M45
2. 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 and seatback thermal electric device connector.
4. Check continuity between climate controlled seat control unit connector and ground.
OK or NG
OK >> Check the condition of the harness and the connector.
NG >> Repair or replace harness between climate controlled seat control unit and seatback thermal elec-
tric device.
Check Seat Cushion Thermal Electric Device Sensor CircuitNIS0027W
1. CHECK CLIMATE CONTROLLED SEAT CONTROL UNIT CIRCUIT
1. Turn ignition switch ON.
2. Check voltage between climate controlled seat control unit con-
nector and ground.
OK or NG
OK >> Climate controlled seat control unit circuit is OK.
NG >> GO TO 2.
AB
Continuity Climate
controlled seat
control unit
connectorTe r m i n a lSeatback thermal
electric device
connectorTerminal
B283
(driver side)
B293
(passenger side)15 B285
(driver side)
B295
(passenger side)4
Ye s
16 6
A
GroundContinuity
Climate controlled seat
control unit connectorTerminal
B283 (driver side)
B293 (passenger side)15
No
16
PIIB6083E
Terminal
ConditionVoltage (V)
(Approx.) (+)
(–) Climate
controlled seat
control unit
connectorTerminal
B283
(driver side)
B293
(passenger side)22 GroundBlower motor
operated0.5 - 4
PIIB6084E

SE-140
CLIMATE CONTROLLED SEAT
Revision: 2007 April2007 M35/M45
Check Seatback Thermal Electric Device Sensor Circuit NIS0027X
1. CHECK CLIMATE CONTROLLED SEAT CONTROL UNIT CIRCUIT
1. Turn ignition switch ON.
2. Check voltage between climate controlled seat control unit con-
nector and ground.
OK or NG
OK >> Climate controlled seat control unit circuit is OK.
NG >> GO TO 2.
2. CHECK SEATBACK THERMAL ELECTRIC DEVICE SENSOR 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 and seatback thermal electric device connector.
4. Check continuity between climate controlled seat control unit connector and ground.
OK or NG
OK >> GO TO 3.
NG >> Repair or replace harness between climate seat control unit and seatback thermal electric device.
Terminal
ConditionVoltage (V)
(Approx.) (+)
(–) Climate
controlled seat
control unit
connectorTerminal
B283
(driver side)
B293
(passenger side)23 GroundBlower motor
operated0.5 - 4
PIIB6087E
AB
Continuity Climate
controlled seat
control unit
connectorTe r m i n a lSeatback thermal
electric device
connectorTerminal
B283
(driver side)
B293
(passenger side)23 B220
(driver side)
B258
(passenger side)1
Ye s
24 2
A
GroundContinuity
Climate controlled seat
control unit connectorTerminal
B283 (driver side)
B293 (passenger side)23
No
24
PIIB6088E

CLIMATE CONTROLLED SEAT
SE-141
C
D
E
F
G
H
J
K
L
MA
B
SE
Revision: 2007 April2007 M35/M45
3. CHECK SEATBACK THERMAL ELECTRIC DEVICE SENSOR
Check resistance between seatback thermal electric device connec-
tor.
OK or NG
OK >> Check the condition of the harness and the connector.
NG >> Replace seatback thermal electric device.
Check Climate Controlled Seat Blower Motor CircuitNIS0027Y
1. CHECK CLIMATE CONTROLLED SEAT BLOWER MOTOR CIRCUIT HARNESS
1. Turn ignition switch OFF.
2. Disconnect climate controlled seat control unit and climate controlled seat blower motor connector.
3. Check continuity between climate controlled seat control unit
connector and climate controlled seat blower motor connector.
4. Check continuity between climate controlled seat control unit connector and ground.
OK or NG
OK >> GO TO 2.
NG >> Repair or replace harness between climate controlled seat control unit and climate controlled seat
blower motor.
Seatback thermal electric
device connectorTerminal Resistance
(KΩ)
(Approx.)
B220
(driver side)
B258
(passenger side)12 2
PIIB6086E
AB
Continuity Climate
controlled seat
control unit
connectorTerminalClimate controlled
seat blower motor
connectorTerminal
B283
(driver side)
B293
(passenger side)7
B282
(driver side)
B292
(passenger side)3
Ye s 14 2
17 4
18 1
A
GroundContinuity
Climate controlled seat
control unit connectorTerminal
B283
(driver side)
B293
(passenger side)7
No 14
17
18
PIIB6089E

SE-142
CLIMATE CONTROLLED SEAT
Revision: 2007 April2007 M35/M45
2. CHECK CLIMATE CONTROLLED SEAT 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 CLIMATE CONTROLLED SEAT BLOWER MOTOR SPEED CONTROL SIGNAL CIRCUIT
Check voltage between climate controlled seat control unit connec-
tor and ground.
OK or NG
OK >> GO TO 4.
NG >> Replace climate controlled seat control unit.
4. CHECK CLIMATE CONTROLLED SEAT BLOWER MOTOR TACHOMETER SIGNAL CIRCUIT
Check voltage between climate controlled seat control unit connec-
tor and ground.
OK or NG
OK >> Climate controlled seat blower motor circuit is OK.
NG >> Replace climate controlled seat blower motor.
Terminal
Voltage (V)
(Approx.) (+)
(–)
Climate controlled seat
control unit connectorTe r m i n a l
B283 (driver side)
B293 (passenger side)14 Ground Battery voltage
PIIB6090E
Terminal
ConditionVoltage (V)
(Approx.) (+)
(–) Climate
controlled
seat control
unit connectorTerminal
B283
(driver side)
B293
(passenger
side)17 GroundClimate
controlled
seat switchHEAT or
COOL4.5 - 8.0
Other than above. 0
PIIB6091E
Terminal
ConditionVoltage (V)
(Approx.) (+)
(–) Climate
controlled
seat control
unit connectorTerminal
B283
(driver side)
B293
(passenger
side)18 GroundClimate
controlled
seat switchHEAT or
COOL4.5 - 8.0
Other than above.Battery
voltage
PIIB6092E

FRONT SEAT
SE-165
C
D
E
F
G
H
J
K
L
MA
B
SE
Revision: 2007 April2007 M35/M45
1. Front leg cover 2. Rear leg cover 3. Headrest
4. Seatback board 5. Seat speaker grill 6. Headrest holder (free)
7. Headrest holder (locked) 8. Seatback upper finisher 9. Side air bag module
10. Reclining device cover 11. Seatback trim 12. Seatback pad
13. Seatback frame 14. Seat speaker 15. Seatback thermal electrical device
(TED) assembly
16. Seat cushion rear finisher
(Climate controlled seat model)17. Seat cushion front finisher 18. Seat slide switch knob
19. Seat reclining switch knob 20. Seat cushion outer finisher 21. Lumber support switch assembly
22. Seat cushion lower finisher 23. Seat cushion inner finisher 24. Seat cushion pad
25. Seat cushion trim 26. Seat cushion finisher B 27. Seat cushion frame
28. Seat cushion thermal electrical
device (TED) assembly29. Blower motor assembly 30. Climate controlled seat control unit
31. Seat control switch 32. Driver seat control unit 33. Seat cushion finisher C
34. Seat harness 35. Seat belt buckle 36. Seat adjuster assembly

FRONT SEAT
SE-167
C
D
E
F
G
H
J
K
L
MA
B
SE
Revision: 2007 April2007 M35/M45
1. Front leg cover 2. Rear leg cover 3. Headrest
4. Seatback board 5. Seat speaker grill 6. Headrest holder (free)
7. Headrest holder (locked) 8. Seatback upper finisher 9. Side air bag module
10. Reclining device cover 11. Seatback trim 12. Seatback pad
13. Seatback frame 14. Seat speaker 15. Seatback thermal electrical device
(TED) assembly
16. Seat cushion rear finisher
(Climate controlled seat model)17. Seat cushion front finisher 18. Seat cushion slide switch
19. Seat reclining switch 20. Seat cushion outer finisher 21. Lumber support switch assembly
22. Seat inner finisher 23. Seat cushion finisher B 24. Blower motor assembly
25. Seat cushion thermal electrical
device (TED) assembly26. Climate controlled seat control unit 27. Seat cushion finisher C
28. Seat harness assembly 29. Seat belt buckle 30. Seat cushion assembly

FRONT SEAT
SE-171
C
D
E
F
G
H
J
K
L
MA
B
SE
Revision: 2007 April2007 M35/M45

Remove the seat cushion front finisher.
: Pawl
: Clip

Remove the seat reclining switch knob and seat slide switch
knob.

Pull seat cushion outer finisher forward, and then disconnect
the pawls and clips.
: Pawl
: Clip

Lift the rear part of the seat cushion outer finisher backward,
and then remove the seat cushion outer finisher.

Remove the harness connector clamp of lumber support switch.

Removal the lumber support switch.

Remove the seat cushion inner finisher.
: Pawl

Remove the retainers from the lower side of front seat. (Driver's seat only)

Remove the hog rings to separate the trim and pad. (Driver's seat only)
2. Remove the nuts, and then remove the seat cushion frame. (Driver's seat only)
3. Remove each unit which is attached to seat cushion frame and seat adjuster assembly.

Remove the screws, and then remove the climate controlled seat control unit.

Remove the screws, and then remove the blower motor.

Remove the bands, and then remove the seat cushion thermal electrical device (TED) assembly.
PIIB3346J
PIIB3348J
PIIB3350J
PIIB3351J