2007 INFINITI M35 ignition

SE-144
HEATED SEAT
Revision: 2007 April2007 M35/M45
HEATED SEATPFP:87335
Component Parts and Harness Connector LocationNIS00280
System Description NIS00281
NOTE:

When handling seat, be extremely careful not to scratch heating unit

To replace heating unit, seat trim and pad should be separated.

Do not use any organic solvent, such as thinner, benzene, alcohol, etc. to clean trims.
Power is all time supplied

to rear LH seat control unit and rear RH seat control unit terminal 1.

through 50A fusible link [Letter F, located in the fuse block (J/B)],

to IPDM E/R (heated seat relay) terminal 14.

through 15A fuse [No.38, located in the fuse block (J/B)].
With the ignition switch to ON or START position, power is supplied

to rear LH seat control unit terminal 4 and

to rear heated seat switch LH terminal 6.

through IPDM E/R (heated seat relay) terminal 12

to rear RH seat control unit terminal 4 and

to rear heated seat switch RH terminal 6

through IPDM E/R (heated seat relay) terminal 9.
1. Fuse, fusible link and relay block (J/B) 2. IPDM E/R E5, E6, E9 3. Heated seat relay E5, E6, E9
(Built into the IPDM E/R)
4. a: Rear heated seat switch LH B507
b: Rear heated seat switch RH B5585. Rear seat control unit
B303, B304 (LH)
B353, B354 (RH)
(View with the rear seatback
removed)
PIIB5890E

HEATED SEAT
SE-153
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F
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MA
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SE
Revision: 2007 April2007 M35/M45
Check Rear Heated Seat Power Supply and Ground CircuitNIS00287
1. CHECK FUSIBLE LINK AND FUSE

Check 50A fusible link (letter F located in the fuse and fusible link box).

Check 15A fuse (No.38, located in fuse block).

Check circuit breaker.
NOTE:
Refer to SE-144, "
Component Parts and Harness Connector Location" .
OK or NG
OK >> GO TO 2.
NG >> If fuse or circuit breaker is blown, be sure to eliminate cause of malfunction before installing new
fuse or new circuit breaker, refer to PG-3, "
POWER SUPPLY ROUTING CIRCUIT" .
2. CHECK HEATED SEAT RELAY POWER SUPPLY CIRCUIT
1. Turn ignition switch OFF.
2. Check voltage between IPDM E/R (heated seat relay) connector
and ground.
OK or NG
OK >> GO TO 3.
NG >> Repair or replace harness between fuse block (J/B) and IPDM E/R (heated seat relay).
3. CHECK HEATED SEAT RELAY GROUND CIRCUIT
1. Disconnect IPDM E/R (heated seat relay) connector.
2. Check continuity between IPDM E/R (heated seat relay) con-
nector and ground.
OK or NG
OK >> Check the condition of the harness and connector.
NG >> Repair or replace harness between IPDM E/R (heated
seat relay) and ground.
Terminal
Voltage (V)
(Approx.) (+)
(–) IPDM E/R
(heated seat relay)
connectorTerminal
E6 14 Ground Battery voltage
PIIB5995E
Terminal
Continuity IPDM E/R
(heated seat relay)
connectorTerminal
Ground
E9 54 Yes
PIIB5996E

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

HEATED SEAT
SE-155
C
D
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F
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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

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

HEATED SEAT
SE-157
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F
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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

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

HEATED SEAT
SE-159
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B
SE
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