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Terminal and Reference Value for Climate Controlled Seat Control UnitNIS0027L
TerminalWire
ColorItem ConditionVoltage (V)
(Approx)
2 R/Y Ignition switch power supply Ignition switch ON or START Battery voltage
3 B Ground — 0
4 R/Y Ignition switch power supply Ignition switch ON or START Battery voltage
5 G/RSeat cushion thermal electric
device power supply (HEAT)Ignition switch ON
or STARTClimate controlled seat switch
select HEAT0 – Battery voltage
Climate controlled seat switch
select OFF0
6 G/BSeat cushion thermal electric
device power supply (COOL)Ignition switch ON
or STARTClimate controlled seat switch
select COOL0 – Battery voltage
Climate controlled seat switch
select OFF0
7 B/R Blower motor ground — 0
8 LG/R HEAT switch indicator signalIgnition switch ON
or STARTClimate controlled seat switch
select HEATBattery voltage
Climate controlled seat switch
select OFF0
9 LG/B COOL switch indicator signalIgnition switch ON
or STARTClimate controlled seat switch
select COOLBattery voltage
Climate controlled seat switch
select OFF0
10 Y/R HEAT switch signalIgnition switch ON
or STARTClimate controlled seat switch
select HEAT0
Climate controlled seat switch
select OFFBattery voltage
11 B / RClimate controlled seat switch
power supplyIgnition switch ON or START Battery voltage
14 V/W Blower motor power supplyIgnition switch ON
or STARTClimate controlled seat switch
select HEAT or COOL5.5 – Battery voltage
Climate controlled seat switch
select OFF0
15 W/RSeatback thermal electric
device power supply (HEAT) Ignition switch ON
or STARTClimate controlled seat switch
select HEAT0 – Battery voltage
Climate controlled seat switch
select OFF0
16 W/BSeatback thermal electric
device power supply (COOL) Ignition switch ON
or STARTClimate controlled seat switch
select COOL0 – Battery voltage
Climate controlled seat switch
select OFF0
17 R/BBlower motor speed control
signal Ignition switch ON
or STARTClimate controlled seat switch
select HEAT or COOL4.5 – 8.0
Climate controlled seat switch
select OFF0
18 VBlower motor tachometer sig-
nalIgnition switch ON
or STARTClimate controlled seat switch
select HEAT or COOL4.5 – 8.0
Climate controlled seat switch
select OFFBattery voltage
20 Y/G COOL switch signalIgnition switch ON
or STARTClimate controlled seat switch
select COOL0
Climate controlled seat switch
select OFFBattery voltage
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SE-126
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Revision: 2006 January2006 M35/M45
Climate Controlled Seat Control Unit Power Supply Circuit CheckNIS0027P
1. CHECK FUSE
Check 10A fuse [No. 12, located in fuse block (J/B)]
NOTE:
Refer to SE-113, "
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 CLIMATE CONTROLLED SEAT RELAY POWER SUPPLY CIRCUIT
1. Disconnect climate controlled seat relay connector.
2. Turn ignition switch ON.
3. Check voltage between climate controlled seat relay harness
connector 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 climate controlled seat relay.
OK or NG
OK >> GO TO 4.
NG >> Replace climate controlled seat relay.
Terminal
Voltage (V)
(Approx.) (+)
(–)
Climate controlled
seat relay connectorTerminal
E16 2 Ground Battery voltage
PIIB6067E
Climate controlled
seat relay connectorTerminal Condition Continuity
E163512V direct current
supply between
terminals 1and 2Ye s
No current supply No
6712V direct current
supply between
terminals 1and 2Ye s
No current supply No
SEC202B
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4. CHECK CLIMATE CONTROLLED SEAT RELAY GROUND CIRCUIT
1. Turn ignition switch OFF.
2. Check continuity between climate controlled seat relay connec-
tor and ground.
OK or NG
OK >> Check the condition of the harness and connector.
NG >> Repair or replace harness between climate controlled
seat relay and ground.
Climate Controlled Seat Control Unit Power Supply and Ground Circuit Inspec-
tion
NIS0027Q
1. CHECK CLIMATE CONTROLLED SEAT CONTROL UNIT POWER SUPPLY CIRCUIT
1. Disconnect climate controlled seat control unit 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 6.
NG >> GO TO 2.
2. CHECK FUSE
Check 15A fuse [No. 42, located in fuse, fusible link and relay unit] (Driver side)
Check 15A fuse [No. 41, located in fuse, fusible link and relay unit] (Passenger side)
NOTE:
Refer to SE-113, "
Component Parts and Harness Connector Location" .
OK or NG
OK >> GO TO 3.
NG >> If fuse is blown, be sure to eliminate cause of malfunction before installing new fuse, refer to PG-
3, "POWER SUPPLY ROUTING CIRCUIT" .
Terminal
Continuity
Climate controlled
seat relay connectorTerminal
Ground
E16 1 Yes
PIIB6068E
Terminal
Voltage (V)
(Approx.) (+)
(–)
Climate controlled seat
control unit connectorTerminal
B284
(driver side)
B294
(passenger side)2
Ground Battery voltage
4
PIIB6069E
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SE-128
CLIMATE CONTROLLED SEAT
Revision: 2006 January2006 M35/M45
3. CHECK CLIMATE CONTROLLED SEAT RELAY POWER SUPPLY CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect climate controlled seat relay.
3. Check voltage between climate controlled seat relay connector
and ground.
OK or NG
OK >> GO TO 4.
NG >> Repair or replace harness between climate controlled seat relay and ground.
4. CHECK CLIMATE CONTROLLED SEAT RELAY
Check continuity climate controlled seat relay.
OK or NG
OK >> GO TO 5.
NG >> Replace climate controlled seat relay.
Terminal
Voltage (V)
(Approx.) (+)
(–)
Climate controlled
seat relay connectorTe r m i n a l
E165
Ground Battery voltage
7
PIIB6070E
Climate controlled
seat relay connectorTerminal Condition Continuity
E163512V direct current
supply between
terminals 1and 2Ye s
No current supply No
6712V direct current
supply between
terminals 1and 2Ye s
No current supply No
SEC202B
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SE-130
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Revision: 2006 January2006 M35/M45
Climate Controlled Seat Switch Power Supply Circuit InspectionNIS0027R
1. CHECK CLIMATE CONTROLLED SEAT CONTROL UNIT POWER SUPPLY
1. Turn ignition switch ON.
2. Check voltage between climate controlled seat control unit and
ground.
OK or NG
OK >> GO TO 2.
NG >> Replace climate controlled seat control unit.
2. CHECK CLIMATE CONTROLLED SEAT SWITCH POWER SUPPLY
1. Turn ignition switch OFF.
2. Disconnect climate controlled seat control unit and climate controlled seat switch connector.
3. Check continuity between climate controlled seat control unit
connector and climate controlled seat switch connector.
–Driver side
–Passenger side
4. Check continuity between climate controlled seat control unit
connector and ground.
OK or NG
OK >> Climate controlled seat control unit power supply circuit is OK.
NG >> Repair or replace harness between climate controlled seat control unit and climate controlled seat
switch.
Terminal
Voltage (V)
(Approx.) (+)
(–) Climate controlled
seat control unit
connectorTerminal
B283
(driver side)
B293
(passenger side)11 Ground Battery voltage
PIIB6073E
AB
Continuity Climate controlled
seat control unit
connectorTerminalClimate controlled
seat switch
connectorTe r m i n a l
B283 11 E20 1 Yes
AC
Continuity Climate controlled
seat control unit
connectorTerminalClimate controlled
seat switch
connectorTerminal
B293 11 E19 1 Yes
A
GroundContinuity Climate controlled
seat control unit
connector
11
B283 (driver side)
B293 (passenger side)No
PIIB6074E
Page 5314 of 5621
CLIMATE CONTROLLED SEAT
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Climate Controlled Seat Switch Indicator Circuit InspectionNIS0027T
1. CHECK CLIMATE CONTROLLED SEAT CONTROL UNIT CUIRCUIT
1. Turn ignition switch ON.
2. Check voltage between climate controlled seat switch connector
and ground.
OK or NG
OK >> GO TO 2.
NG >> Replace climate controlled seat control unit.
Terminal
ConditionVoltage (V)
(Approx.) (+)
(–) Climate
controlled
seat control
unit connectorTerminal
B283
(driver side)
B293
(passenger
side)8
GroundClimate
controlled
seat switchHEAT Battery voltage
Other than above. 0
9Climate
controlled
seat switchCOOL Battery voltage
Other than above. 0
PIIB6077E
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3. CHECK CLIMATE COMTROLLED SEAT SWICH INDICATOR
Check continuity between climate controlled seat switch.
OK or NG
OK >> Check the condition of the harness and the connector.
NG >> Replace climate controlled seat switch.
Seat Cushion Thermal Electric Device Circuit InspectionNIS0027U
1. CHECK SEAT CUSHION THERMAL ELECTRIC DEVICE POWER SUPPLY CIRCUIT
1. Turn ignition switch ON.
2. Check voltage between climate controlled seat control unit con-
nector and ground.
OK or NG
OK >> Seat cushion thermal electric device circuit is OK.
NG >> GO TO 2.
Climate controlled seat switch
connectorTerminal Continuity
(+) (–)
B20 (driver side)*
B19 (passenger side)4
6No
5
64
Ye s
5
PIIB6079E
Terminal
ConditionVoltage (V)
(Approx.) (+)
(–) Climate
controlled seat
control unit
connectorTerminal
B283
(driver side)
B293
(passenger
side)5
GroundClimate
controlled
seat switchHEAT 0 - Battery voltage
Other than above. 0
6Climate
controlled
seat switchCOOL 0 - Battery voltage
Other than above. 0
PIIB6080E
Page 5317 of 5621

SE-136
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Revision: 2006 January2006 M35/M45
2. CHECK SEAT CUSHION THERMAL ELECTRIC DEVICE 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 >> Check the condition of the harness and the connector.
NG >> Repair or replace harness between climate controlled seat control unit and seat cushion thermal
electric device.
Seatback Thermal Electric Device Circuit InspectionNIS0027V
1. CHECK SEATBACK THERMAL ELECTRIC DEVICE POWER SUPPLY CIRCUIT
1. Turn ignition switch ON.
2. Check voltage between climate controlled seat control unit con-
nector and ground.
OK or NG
OK >> Seatback thermal electric device circuit is OK.
NG >> GO TO 2.
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)5 B285
(driver side)
B295
(passenger side)4
Ye s
66
A
GroundContinuity
Climate controlled seat
control unit connectorTerminal
B283 (driver side)
B293 (passenger side)5
No
6
PIIB6081E
Te r m i n a l
ConditionVoltage (V)
(Approx.) (+)
(–) Climate
controlled
seat control
unit connectorTerminal
B283
(driver side)
B293
(passenger
side)15
GroundClimate
controlled
seat switchHEAT0 - Battery
voltage
Other than above. 0
16Climate
controlled
seat switchCOOL0 - Battery
voltage
Other than above. 0
PIIB6082E