sensor INFINITI M35 2006 Factory Service Manual

SE-102
POWER SEAT(REAR)
Revision: 2006 January2006 M35/M45
Terminals and Reference Values for Rear Seat Control Unit NIS00276
TerminalWire
ColorItem ConditionVoltage (V)
(Approx.)
1 R Power source (BAT) — Battery voltage
2 R/W Sliding motor forward signalWhen sliding switch forward is operated Battery voltage
Other than above 0
7 W/R Sliding motor backward signalWhen sliding switch backward is operated Battery voltage
Other than above 0
8 B/L Ground (power) — 0
10 Y/B Sliding switch forward signalWhen sliding switch forward is operated. 0
Other than above. Battery voltage
11 Y/R Cancel switch signalCancel switch ON 5
Cancel switch CANCEL 0
12 Y/GSliding sensor signalSliding device active
Sliding device inactive 0 or 5
13 B/Y Ground (signal) — 0
15 L/R Sliding switch backward signalWhen sliding switch backward is operated. 0
Other than above Battery voltage
16 L/B Rear door switch signalRear door open (ON) 0
Rear door close (OFF) Battery voltage
19 Y Sensor ground — 0
SIIA0690J

POWER SEAT(REAR)
SE-103
C
D
E
F
G
H
J
K
L
MA
B
SE
Revision: 2006 January2006 M35/M45
Work FlowNIS00277
1. Check the symptom and customer's requests.
2. Understand the outline of system. Refer to SE-95, "
System Description" .
3. According to the trouble diagnosis chart, repair or replace the cause of the malfunction. Refer to SE-103,
"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.
Rear Power Seat Power Supply Circuit InspectionNIS00279
1. CHECK FUSIBLE LINK
Check 50A fusible link (letter F located in the fuse and fusible link box).
NOTE:
Refer to SE-95, "
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. Rear power seat power supply circuit inspectionSE-103
Rear power seat LH or RH sliding switch does not operate
moreover, retreat function does not operate if the door is
opened1. Rear seat control unit power supply and
ground circuit inspectionSE-104
2. Rear seat sliding motor circuit inspectionSE-105
Rear power seat LH or RH does not operate, but retreat func-
tion operates when the door is openedRear power seat switch circuit inspectionSE-106
Rear power seat LH and RH retreat function does not operate,
but operates by sliding switchAutomatic return cancel switch inspectionSE-109
Rear power seat LH or RH retreat function does not operate,
but operates by a sliding switch1. Rear door switch circuit inspectionSE-1102. Automatic return cancel switch circuit inspec-
tionSE-108
3. Rear seat sliding sensor circuit inspectionSE-111

POWER SEAT(REAR)
SE-111
C
D
E
F
G
H
J
K
L
MA
B
SE
Revision: 2006 January2006 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.
Rear Seat Sliding Sensor Circuit InspectionNIS0027G
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

SE-112
POWER SEAT(REAR)
Revision: 2006 January2006 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 connectorTe r m i n a lRear 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

CLIMATE CONTROLLED SEAT
SE-113
C
D
E
F
G
H
J
K
L
MA
B
SE
Revision: 2006 January2006 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 B20
b: Climate controlled seat switch
passenger side B19
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)

CLIMATE CONTROLLED SEAT
SE-115
C
D
E
F
G
H
J
K
L
MA
B
SE
Revision: 2006 January2006 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: 2006 January2006 M35/M45
Work FlowNIS0027M
1. Check the symptom and customer's requests.
2. Understand the outline of system. Refer to SE-113, "
System Description" .
3. Perform the preliminary check. Refer toSE-124, "
Preliminary Check" .
4. According to the trouble diagnosis chart, repair or replace the cause of the malfunction. Refer to SE-125,
"Trouble Diagnoses Symptom Chart" .
5. Does climate controlled seat operate normally? YES: GO TO 6, NO: GO TO 4.
6. INSPECTION END.
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.
21 GR/LSeat cushion thermal electric
device sensor groundIgnition switch ON 0
22 GR/RSeat cushion thermal electric
device sensor signalBlower motor operated 0.5 – 4
Ignition switch OFF 0
23 L/RSeatback thermal electric
device sensor signalBlower motor operated 0.5 – 4
Ignition switch OFF 0
24 LSeatback thermal electric
device sensor groundIgnition switch ON 0 TerminalWire
ColorItem ConditionVoltage (V)
(Approx)

CLIMATE CONTROLLED SEAT
SE-125
C
D
E
F
G
H
J
K
L
MA
B
SE
Revision: 2006 January2006 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 (68F) or more of mutual differences of tem-
perature.
Symptom Diagnoses / service procedureRefer to
page
Climate controlled seat do not operate (Neither the driver's
side nor passenger's side operate).1. Climate controlled seat control unit power supply cir-
cuit check.SE-126
All the driver side or passenger side climate controlled
seat do not operate.1. Climate controlled seat control unit power supply and
ground circuit inspection.SE-1272. Climate controlled seat switch power supply circuit
inspectionSE-130
3. Climate controlled seat blower motor circuit inspection.SE-140
4. Replace climate controlled seat control unit.SE-113
Climate controlled seat blower motor speed cannot adjust.1. Climate controlled seat switch power supply circuit
inspectionSE-1302. Climate controlled seat switch circuit inspectionSE-131
3. Climate controlled seat control unit inspection.SE-142
4. Replace climate controlled seat blower motor.SE-113
The climate controlled seat dose not operates when the
switch is done in HEAT or COOL.Climate controlled seat switch circuit inspection.SE-131
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. Seat cushion thermal electric device sensor circuit
inspection.SE-1372. Seat cushion thermal electric device circuit inspectionSE-135
3. Seatback thermal electric device sensor circuit inspec-
tion.SE-139
4. Seatback thermal electric device circuit inspectionSE-136
5. Climate controlled seat blower motor circuit inspection.SE-140
6. Replace Climate controlled seat control unitSE-113
The climate controlled seat switch indicator do not oper-
ated with HEAT or COOL positionClimate controlled seat switch indicator circuit inspectionSE-133

CLIMATE CONTROLLED SEAT
SE-137
C
D
E
F
G
H
J
K
L
MA
B
SE
Revision: 2006 January2006 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.
Seat Cushion Thermal Electric Device Sensor Circuit InspectionNIS0027W
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
connectorTerminalSeatback 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
connectorTe r m i n a l
B283
(driver side)
B293
(passenger side)22 GroundBlower motor
operated0.5 - 4
PIIB6084E

SE-138
CLIMATE CONTROLLED SEAT
Revision: 2006 January2006 M35/M45
2. CHECK SEAT CUSHION THERMAL ELECTRIC DEVICE SENSOR HARNESS
1. Turn ignition switch OFF.
2. Disconnect climate controlled seat control unit connector and seat cushion thermal electric device con-
nector.
3. Check continuity between climate controlled seat control unit
connector and seat cushion 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 controlled seat control unit and seat cushion thermal
electric device.
3. CHECK SEAT CUSHION THERMAL ELECTRIC DEVICE SENSOR
Check resistance between seat cushion thermal electric device con-
nector.
OK or NG
OK >> Check the condition of the harness and the connector.
NG >> Replace seat cushion thermal electric device.
AB
Continuity Climate
controlled seat
control unit
connectorTe r m i n a lSeat cushion
thermal electric
device connectorTerminal
B283
(driver side)
B293
(passenger side)21 B285
(driver side)
B295
(passenger side)2
Ye s
22 1
A
GroundContinuity
Climate controlled seat
control unit connectorTerminal
B283 (driver side)
B293 (passenger side)21
No
22
PIIB6085E
Seat cushion thermal
electric device connectorTerminal Resistance (K)
(Approx.)
B220
(driver side)
B258
(passenger side)12 2
PIIB6086E