sensor INFINITI M35 2007 Factory Service Manual

POWER SEAT(REAR)
SE-103
C
D
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MA
B
SE
Revision: 2007 April2007 M35/M45
Terminals and Reference Values for Rear Seat Control Unit NIS00276
Te r m i -
nalWire
ColorItemSignal
Input/OutputConditionVoltage (V)
(Approx.)
1 R Power source (BAT) Input — Battery voltage
2 R/W Sliding motor forward signal OutputWhen sliding switch forward is
operatedBattery voltage
Other than above 0
7 W/R Sliding motor backward signal OutputWhen sliding switch backward
is operatedBattery voltage
Other than above 0
8 B/L Ground (power) — — 0
10 Y/B Sliding switch forward signal InputWhen sliding switch forward is
operated0
Other than above. Battery voltage
11 Y/R Cancel switch signal InputCancel switch ON 5
Cancel switch CANCEL 0
12 Y/GSliding sensor signal
InputSliding device active
Sliding device inactive 0 or 5
13 B/Y Ground (signal) — — 0
15 L/R Sliding switch backward signal InputWhen sliding switch backward
is operated0
Other than above Battery voltage
16 L/B Rear door switch signal InputRear door open (ON) 0
Rear door close (OFF) Battery voltage
19 Y Sensor ground — — 0
SIIA0690J

SE-104
POWER SEAT(REAR)
Revision: 2007 April2007 M35/M45
Work FlowNIS00277
1. Check the symptom and customer's requests.
2. Understand the outline of system. Refer to SE-96, "
System Description" .
3. According to the trouble diagnosis chart, repair or replace the cause of the malfunction. Refer to SE-104,
"Trouble Diagnoses Symptom Chart" .
4. Does rear power seat operate normally? YES: GO TO 5, NO: GO TO 4.
5. INSPECTION END.
Trouble Diagnoses Symptom ChartNIS00278

Check that other systems using the signal of the following systems operate normally.
Check Rear Power Seat Power Supply CircuitNIS00279
1. CHECK FUSIBLE LINK
Check 50A fusible link (letter F located in the fuse and fusible link box).
NOTE:
Refer to SE-96, "
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 PG-
3, "POWER SUPPLY ROUTING CIRCUIT" .
2. CHECK CIRCUIT BREAKER
Check circuit breaker.
NOTE:
Refer to PG-3, "
POWER SUPPLY ROUTING CIRCUIT" .
OK or NG
OK >> Check the condition of the harness and connector.
NG >> Replace the circuit breaker.
Symptom Diagnoses / service procedure Refer to page
Rear power seat LH, RH do not operate. Check rear power seat power supply circuitSE-104
Rear power seat LH or RH sliding switch does not operate moreover,
retreat function does not operate if the door is opened1. Check rear seat control unit power supply
and ground circuit SE-105
2. Check rear seat sliding motor circuit SE-106
Rear power seat LH or RH does not operate, but retreat function
operates when the door is openedCheck rear power seat switch circuitSE-107
Rear power seat LH and RH retreat function does not operate,
but operates by sliding switchCheck automatic return cancel switchSE-110
Rear power seat LH or RH retreat function does not operate,
but operates by a sliding switch1. Check rear door switch circuitSE-1112. Check automatic return cancel switch circuit SE-109
3. Check rear seat sliding sensor circuitSE-112

SE-112
POWER SEAT(REAR)
Revision: 2007 April2007 M35/M45
4. CHECK REAR DOOR SWITCH POWER SUPPLY-2
1. Connect rear seat control unit connector.
2. Check voltage between rear seat control unit connector and
ground.
OK or NG
OK >> Check the condition of the harness and connector.
NG >> Replace rear seat control unit.
Check Rear Seat Sliding Sensor CircuitNIS0027G
1. CHECK REAR SEAT SLIDING SENSOR POWER SUPPLY
1. Turn ignition switch OFF.
2. Check signal between rear seat control unit connector and
ground with oscilloscope.
OK or NG
OK >> Check the condition of the harness and connector.
NG >> GO TO 2.
Terminals
Voltage (V)
(Approx.) (+)
(–)
Rear seat control
unit connectorTerminal
B304 (LH)
B354 (RH)16 Ground Battery voltage
PIIB5929E
Terminal
ConditionSignal
(Reference valve) (+)
(–) Rear seat
control unit
connectorTerminal
B304 (LH)
B354 (RH)12 GroundSliding
device
active
PIIB5932E
SIIA0690J

POWER SEAT(REAR)
SE-113
C
D
E
F
G
H
J
K
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B
SE
Revision: 2007 April2007 M35/M45
2. CHECK REAR SEAT SLIDING SENSOR HARNESS
1. Disconnect rear seat control unit connector and rear seat sliding motor connector.
2. Check continuity between rear seat control unit connector and
rear seat sliding motor connector.
3. Check continuity between rear seat control unit connector and
ground.
OK or NG
OK >> Replace rear seat sliding motor.
NG >> Repair or replace harness between rear seat control unit and rear seat sliding motor.
AB
Continuity
Rear seat control
unit connectorTerminalRear seat sliding
motor connectorTerminal
B304 (LH)
B354 (RH)12
B311 (LH)
B361 (RH)1
Ye s
19 2
A
GroundContinuity
Rear seat control unit connector Terminal
B304 (LH)
B354 (RH)12
No
19
PIIB5933E

SE-114
CLIMATE CONTROLLED SEAT
Revision: 2007 April2007 M35/M45
CLIMATE CONTROLLED SEATPFP:870U6
Component Parts and Harness Connector LocationNIS0027H
System DescriptionNIS0027I
The climate controlled seat system is controlled by climate controlled seat control unit.
Heating and cooling are possible for a thermal electric device (heat conversion machine).
NOTE:

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.

In this case, by turning off ignition switch, system down is canceled and it can be reused by turning on
ignition switch again.

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

The thermal electric device has the character in which, as for an opposite side. one side becomes
high temperature at the time of low temperature.
PIIB5891E
1. Fuse block (J/B) 2. Climate controlled seat relay E16 3.a: Climate controlled seat switch
driver side B430
b: Climate controlled seat switch
passenger side B429
4.a: Seat cushion thermal electric
device B285 (driver side)
B295 (passenger side)
b: Climate controlled seat control
unit B283, B284 (driver side)
B293, B294 (passenger side)
c: Climate controlled seat blower
motor B282 (driver side)
B292 (passenger side)5.Seatback thermal electric device
B220 (driver side)
B258 (passenger side)

SE-116
CLIMATE CONTROLLED SEAT
Revision: 2007 April2007 M35/M45

to seat cushion thermal electric device terminal 1,

through climate controlled seat control unit terminal 22.
Then ground is supplied

to climate controlled seat control unit terminal 21,

through seat cushion thermal electric device terminal 2,
Then the climate controlled seat control unit recognizes seat cushion thermal electric device sensor signal.
When climate controlled seat control unit recognizes climate controlled seat switch HEAT signal and, seat
cushion thermal electric device sensor signal,
Power is supplied

to seat cushion thermal electric device terminal 4,

through climate controlled seat control unit terminal 5.
Then ground is supplied

through seat cushion thermal electric device terminal 6,

to climate controlled seat control unit terminal 6,

through climate controlled seat control unit terminal 3,

through body grounds B5, B40 and B131.
When climate controlled seat control unit recognizes climate controlled seat switch COOL signal and seat
cushion thermal electric device sensor signal,
Power is supplied

to seat cushion thermal electric device terminal 6,

through climate controlled seat control unit terminal 6.
Then ground is supplied

through seat cushion thermal electric device terminal 4,

to climate controlled seat control unit terminal 5.

through climate controlled seat control unit terminal 3,

through body grounds B5, B40 and B131.
When the ignition switch turned to ON or START position,
Power is supplied

to seatback thermal electric device terminal 1,

through climate controlled seat control unit terminal 23.
Then ground is supplied

to climate controlled seat control unit terminal 24,

through seatback thermal electric device terminal 2,

through climate controlled seat control unit terminal 3,

through body grounds B5, B40 and B131.
Then the climate controlled seat control unit recognizes seatback thermal electric device sensor signal.
When climate controlled seat control unit recognizes climate controlled seat switch HEAT signal and seatback
thermal electric device sensor signal,
Power is supplied

to seatback thermal electric device terminal 4,

through climate controlled seat control unit terminal 15,
ground is supplied

to climate controlled seat control unit terminal 16,

through seatback thermal electric device terminal 6,

through climate controlled seat control unit terminal 3,

through body grounds B5, B40 and B131.
This seatback thermal electric device generates heat wind is warmed.
When climate controlled seat control unit recognizes climate controlled seat switch COOL signal and seatback
thermal electric device sensor signal,
Power is supplied

to seatback thermal electric device terminal 6,

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