Infiniti M35/M45 Y50. Manual - part 1079

POWER SEAT(REAR)

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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.

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B

Continuity 

Rear seat control 

unit connector

Terminal

Rear seat sliding 

motor connector

Terminal

B304 (LH) 

B354 (RH)

12

B311 (LH) 

B361 (RH)

1

Yes

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2

A

Ground

Continuity 

Rear seat control unit connector

Terminal

B304 (LH)

B354 (RH)

12

No

19

PIIB5933E

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CLIMATE CONTROLLED SEAT

CLIMATE CONTROLLED SEAT

PFP:870U6

Component Parts and Harness Connector Location

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System Description

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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:

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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.

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

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

CAUTION:

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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)

CLIMATE CONTROLLED SEAT

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At the time of work, please turn OFF a switch, and carry it out after checking that the thermal elec-
tric device has got cold.

Power is at all times supplied

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through 15A fuse [No. 41 located in the fuse fusible link and relay unit] 

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to climate controlled seat relay terminals 5.

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through 15A fuse [No. 42 located in the fuse fusible link and relay unit] 

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to climate controlled seat relay terminals 7.

When the ignition switch turned to ON or START position,
Power is supplied

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through 10A fuse [No. 12, located in the fuse block (J/B)]

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to climate controlled seat relay terminal 2.

Then ground is supplied

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to climate controlled seat relay terminal 1,

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through body grounds E22 and E43.

Then climate controlled seat relay is energized.
When climate controlled seat relay is turned to ON,
Power is supplied, 

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through climate controlled seat relay terminal 3,

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to climate controlled seat control unit (passenger side) terminal 2 and 4.

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through climate controlled seat relay terminal 6,

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to climate controlled seat control unit (driver side) terminal 2 and 4. 

When climate controlled switch select HEAT, ground is supplied

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through climate controlled seat switch terminal 1 and 3,

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to climate controlled seat control unit terminal 10.

Then, the climate controlled seat control unit receives climate controlled seat switch HEAT signal.
When climate controlled seat switch select COOL, ground is supplied

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through climate controlled seat switch terminal 1 and 2,

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to climate controlled seat control unit terminal 20,

Then, the climate controlled seat control unit receives climate controlled switch COOL signal.
When blower motor rotates, signal is transmitted

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to climate controlled seat control unit terminal 18,

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through climate controlled seat blower motor terminal 1.

This is climate controlled seat blower motor tachometer signal.
When climate controlled seat control unit receives climate controlled seat switch signal and tachometer signal,
Power is supplied

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to climate controlled seat blower motor terminal 4,

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through climate controlled seat control unit terminal 17.

This is blower motor revolution control signal.
When blower motor receivers blower motor revolution control signal,
Power is supplied

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through climate controlled seat control unit terminal 14,

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to climate controlled seat blower motor terminal 2.

When number of rotations correspond signal,
Ground is supplied

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to climate controlled seat blower motor terminal 3,

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through climate controlled seat control unit terminal 7,

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through climate controlled seat control unit terminal 3,

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through body grounds B5, B40 and B131.

Then motor revolution is controlled.
When the ignition switch turned to ON or START position,
Power is supplied

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CLIMATE CONTROLLED SEAT

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to seat cushion thermal electric device terminal 1, 

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through climate controlled seat control unit terminal 22.

Then ground is supplied

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to climate controlled seat control unit terminal 21,

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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

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to seat cushion thermal electric device terminal 4, 

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through climate controlled seat control unit terminal 5.

Then ground is supplied

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through seat cushion thermal electric device terminal 6, 

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to climate controlled seat control unit terminal 6,

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through climate controlled seat control unit terminal 3,

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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

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to seat cushion thermal electric device terminal 6, 

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through climate controlled seat control unit terminal 6.

Then ground is supplied

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through seat cushion thermal electric device terminal 4, 

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to climate controlled seat control unit terminal 5.

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through climate controlled seat control unit terminal 3,

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through body grounds B5, B40 and B131.

When the ignition switch turned to ON or START position,
Power is supplied

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to seatback thermal electric device terminal 1, 

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through climate controlled seat control unit terminal 23.

Then ground is supplied

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to climate controlled seat control unit terminal 24,

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through seatback thermal electric device terminal 2,

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through climate controlled seat control unit terminal 3,

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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

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to seatback thermal electric device terminal 4, 

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through climate controlled seat control unit terminal 15,

ground is supplied

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to climate controlled seat control unit terminal 16,

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through seatback thermal electric device terminal 6, 

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through climate controlled seat control unit terminal 3,

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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

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to seatback thermal electric device terminal 6,