Page 4353 of 4647
SE-154
HEATED SEAT
Revision: 2007 April2007 M35/M45
Check Rear Seat Control Unit Power Supply and Ground CircuitNIS00288
1. CHECK REAR SEAT CONTROL UNIT POWER SUPPLY CIRCUIT (BAT)
1. Turn ignition switch OFF.
2. Check voltage between rear seat control unit connector and
ground.
OK or NG
OK >> GO TO 2.
NG >> Repair or replace harness between circuit breaker and rear seat control unit.
2. CHECK REAR SEAT CONTROL UNIT POWER SUPPLY CIRCUIT (IGN)
1. Turn ignition switch ON.
2. Check voltage between rear seat control unit connector and
ground.
OK or NG
OK >> GO TO 4.
NG >> GO TO 3.
Terminal
Voltage (V)
(Approx.) (+)
(–)
Rear seat control
unit connectorTerminal
B303 (LH)
B353 (RH)1 Ground Battery voltage
PIIB5997E
Terminal
Voltage (V)
(Approx.) (+)
(–)
Rear seat control
unit connectorTerminal
B303 (LH)
B353 (RH)4 Ground Battery voltage
PIIB5998E
Page 4354 of 4647

HEATED SEAT
SE-155
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Revision: 2007 April2007 M35/M45
3. CHECK REAR SEAT CONTROL UNIT HARNESS
1. Turn ignition switch OFF.
2. Disconnect IPDM E/R (heated seat relay) and rear seat control unit connector.
3. Check continuity between IPDM E/R (heated seat relay) con-
nector and rear seat control unit connector.
4. Check continuity between rear seat control unit connector and
ground.
OK or NG
OK >> GO TO 4.
NG >> Repair or replace harness between rear seat control unit and IPDM E/R (heated seat relay).
4. CHECK REAR SEAT CONTROL UNIT GROUND CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect rear seat control unit connector.
3. Check continuity between rear seat control unit connector and
ground.
OK or NG
OK >> Rear seat control unit power supply and ground circuit is OK.
NG >> Repair or replace harness between rear seat control unit and ground.
AB
Continuity
Rear seat control
unit connectorTerminalIPDM E/R
(heated seat relay)
connectorTerminal
B303 (LH)
4E6 12
Ye s
B353 (RH) E5 9
A
GroundContinuity
Rear seat control unit connector Terminal
B303 (LH)
B353 (RH)4No
PIIB5999E
Terminal
Continuity
Rear seat control
unit connectorTerminal
Ground B303 (LH)
B353 (RH)8
Ye s
B304 (LH)
B354 (RH)13
PIIB6000E
Page 4355 of 4647

SE-156
HEATED SEAT
Revision: 2007 April2007 M35/M45
Check Rear Heated Seat Switch CircuitNIS00289
1. CHECK REAR HEATED SEAT SWITCH POWER SUPPLY-1
1. Turn ignition switch ON.
2. Check voltage between rear seat control unit connector and
ground.
OK or NG
OK >> Rear heated seat switch circuit is OK.
NG >> GO TO 2.
2. CHECK REAR HEATED SEAT SWITCH HARNESS
1. Turn ignition switch OFF.
2. Disconnect rear heated seat switch and rear seat control unit connector.
3. Check continuity between rear heated seat switch connector
and rear seat control unit connector.
4. Check continuity between rear seat control unit connector and
ground.
OK or NG
OK >> GO TO 3.
NG >> Replace or replace harness between rear seat control unit and rear heated seat switch.
Terminal
ConditionVoltage (V)
(Approx.) (+)
(–) Rear seat
control unit
connectorTerminal
B304 (LH)
B354 (RH)17
GroundRear heated
seat switch HIGH 0
Other than above. 5
18Rear heated
seat switchLOW 0
Other than above. 5
PIIB6001E
AB
Continuity
Rear seat control
unit connectorTe r m i n a lRear heated seat
switch connectorTerminal
B304 (LH)
B354 (RH)17
B507 (LH)
B558 (RH)1
Ye s
18 2
A
GroundContinuity
Rear seat control unit connector Terminal
B304 (LH)
B354 (RH)17
No
18
PIIB6002E
Page 4356 of 4647

HEATED SEAT
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Revision: 2007 April2007 M35/M45
3. CHECK REAR HEATED SEAT SWITCH
Check continuity rear heated seat switch connector.
OK or NG
OK >> GO TO 4.
NG >> Replace rear heated seat switch.
4. CHECK REAR HEATED SEAT SWITCH GROUND CIRCUIT
Check continuity between rear heated seat switch connector and
ground.
OK or NG
OK >> GO TO 5.
NG >> Replace or replace harness between rear heated seat
switch and ground.
5. CHECK REAR HEATED SEAT SWITCH POWER SUPPLY-2
1. Connect rear seat control unit.
2. Turn ignition switch ON.
3. 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 heated
seat switch
connectorTerminal Condition Continuity
B507 (LH)
B558 (RH)1
3Rear heated
seat switch HIGH Yes
Other than above. No
2Rear heated
seat switchLOW Yes
Other than above. No
PIIB6003E
Terminal
Continuity
Rear heated seat
switch connectorTerminal
Ground
B507 (LH)
B558 (RH)3Yes
PIIB6004E
Terminals
Voltage (V)
(Approx.) (+)
(–)
Rear seat control
unit connectorTerminal
B304 (LH)
B354 (RH)17
Ground 5
18
PIIB6001E
Page 4357 of 4647

SE-158
HEATED SEAT
Revision: 2007 April2007 M35/M45
Check Rear Heated Seat Indicator Power Supply CircuitNIS0028A
1. CHECK REAR HEATED SEAT INDICATOR POWER SUPPLY
1. Turn ignition switch OFF.
2. Disconnect rear heated seat switch connector.
3. Check voltage between rear heated seat switch connector and
ground.
OK or NG
OK >> GO TO 3.
NG >> GO TO 2.
2. CHECK REAR HEATED SEAT INDICATOR HARNESS
1. Turn ignition switch OFF.
2. Disconnect IPDM E/R (heated seat relay) connector.
3. Check continuity between IPDM E/R (heated seat relay) con-
nector and rear heated seat switch connector.
4. Check continuity between rear heated seat switch connector
and ground.
OK or NG
OK >> Check the condition of the harness and connector.
NG >> Replace or replace harness between IPDM E/R (heated seat relay) and rear heated seat switch.
Terminal
ConditionVoltage (V)
(Approx.) (+)
(–) Rear heated
seat switch
connectorTerminal
B507 (LH)
B558 (RH)6GroundIgnition
switchON Battery voltage
OFF 0
PIIB6005E
AB
Continuity
Rear heated seat
switch connectorTe r m i n a lIPDM E/R
(heated seat relay)
connectorTerminal
B507 (LH)
6E6 12
Ye s
B558 (RH) E5 9
A
GroundContinuity
Rear heated seat
switch connectorTerminal
B507 (LH)
B558 (RH)6No
PIIB6006E
Page 4358 of 4647
HEATED SEAT
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Revision: 2007 April2007 M35/M45
3. CHECK REAR HEATED SEAT SWITCH
Check continuity rear heated seat switch connector.
OK or NG
OK >> Check the condition of the harness and connector.
NG >> Replace rear heated seat switch.
Check Rear Heated Seat Indicator CircuitNIS0028B
1. CHECK REAR SEAT CONTROL UNIT POWER SUPPLY
1. Turn ignition switch ON.
2. Check voltage between rear seat control unit connector and
ground.
OK or NG
OK >> Replace rear heated seat switch.
NG >> GO TO 2.
Rear heated seat
switch connectorTe r m i n a l
Continuity
(+) (-)
B507 (LH)
B558 (RH)4
6Yes
5
64
No
5
PIIB6007E
Te r m i n a l
ConditionVoltage (V)
(Approx.) (+)
(–) Rear seat
control unit
connectorTerminal
B304 (LH)
B354 (RH)9
GroundRear heated
seat switch HIGH 0
Other than above. Battery voltage
14Rear heated
seat switch LOW 0
Other than above. Battery voltage
PIIB6008E
Page 4359 of 4647

SE-160
HEATED SEAT
Revision: 2007 April2007 M35/M45
2. CHECK REAR HEATED SEAT INDICATOR HARNESS
1. Turn ignition switch OFF.
2. Disconnect rear seat control unit and rear heated seat switch connector.
3. Check continuity between rear heated seat switch connector
and rear seat control unit connector.
4. Check continuity between rear heated seat switch connector
and ground.
OK or NG
OK >> GO TO 3.
NG >> Replace or replace harness between rear heated seat switch and rear seat control unit.
3. CHECK REAR HEATED SEAT SWITCH
Check continuity rear heated seat switch connector.
OK or NG
OK >> Replace rear seat control unit.
NG >> Replace rear heated seat switch.
AB
Continuity
Rear heated seat
switch connectorTerminalRear seat control
unit connectorTerminal
B507 (LH)
B558 (RH)4
B304 (LH)
B354 (RH)9
Ye s
514
A
GroundContinuity
Rear heated seat
switch connectorTerminal
B507 (LH)
B558 (RH)4
No
5
PIIB6009E
Rear heated seat
switch connectorTerminal
Continuity
(+) (-)
B507 (LH)
B558 (RH)4
6Yes
5
64
No
5
PIIB6007E
Page 4360 of 4647

HEATED SEAT
SE-161
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Revision: 2007 April2007 M35/M45
Check Rear Heated Seat CircuitNIS0028C
1. CHECK REAR SEAT CONTROL UNIT
1. Turn ignition switch ON.
2. Check voltage between rear seat control unit connector and
ground.
OK or NG
OK >> GO TO 2.
NG >> Replace rear seat control unit.
2. CHECK REAR SEAT HEATER HARNESS
1. Turn ignition switch OFF.
2. Disconnect rear seat control unit and rear seat cushion heater connector.
3. Check continuity between rear seat control unit connector and
rear seat cushion heater connector.
4. Check continuity between rear seat control unit connector and
ground.
OK or NG
OK >> GO TO 3.
NG >> Replace or replace harness between rear seat control unit and rear seat cushion heater.
Te r m i n a l
ConditionVoltage (V)
(Approx.) (+)
(–) Rear seat
control unit
connectorTe r m i n a l
B303 (LH)
B353 (RH)5
GroundRear heated
seat switchHIGH Battery voltage
Other than above. 0
6Rear heated
seat switchLOW Battery voltage
Other than above. 0
PIIB6010E
AB
Continuity
Rear seat control
unit connectorTerminalRear seat cushion
heater connectorTerminal
B303 (LH)
B353 (RH)5
B309 (LH)
B359 (RH)1
Ye s
62
A
GroundContinuity
Rear seat control
unit connectorTerminal
B303 (LH)
B353 (RH)5
No
6
PIIB6011E