Infiniti M45 (Y34). Manual - part 776

CLIMATE CONTROLLED SEAT

SE-125

C

D

E

F

G

H

J

K

L

M

A

B

SE

OK or NG

OK

>> GO TO 4.

NG

>> Repair or replace harness between climate controlled seat control unit and climate controlled

blower motor.

4. 

 CHECK BLOWER MOTOR GROUND HARNESS

1.

Connect climate controlled seat control unit connector.

2.

Check continuity between climate controlled seat control unit
connector B159 (driver side), B359 (passenger side) terminal J
3 (GY) and climate controlled seat control unit connector B158
(driver side), B358 (passenger side) terminal JC (B).

OK or NG

OK

>> Blower motor circuit check is OK.

NG

>> Replace climate controlled seat control unit.

Blower Motor Speed Control Circuit Inspection

AIS002CI

1. 

 CHECK BLOWER MOTOR SPEED CONTROL SIGNAL CIRCUIT

1.

Turn ignition switch ON.

2.

Check voltage between climate controlled seat control unit con-
nector and ground.

OK or NG

OK

>> GO TO 2.

NG

>> Replace climate controlled seat control unit.

2. 

 CHECK BLOWER MOTOR HARNESS

1.

Turn ignition switch OFF.

2.

Disconnect climate controlled seat control unit and climate controlled seat blower motor connector.

3.

Check continuity between climate controlled seat control unit
connector B159 (driver side), B359 (passenger side) terminal
J13 (R) and climate controlled seat blower motor connector
B155 (driver side), B355 (passenger side) terminal J13 (R).

4.

Check continuity between climate controlled seat control unit
connector B159 (driver side), B359 (passenger side) terminal
J13 (R) and ground.

OK or NG

OK

>> Blower motor control circuit check is OK.

NG

>> Repair or replace harness between climate controlled seat control unit and blower motor.

J3 (GY) 

−

 JC (B)

: Continuity should exist.

PIIA3347E

Connector

Terminal

(Wire color)

Condition

Voltage (V)

(Approx.)

(+)

(–)

B159

(Driver side),

B359

(Passenger side)

J13(R)

Ground

Turn ignition switch ON
Climate controlled seat 
switch “HEAT” or “COOL”.

 6 – 12

Turn ignition switch OFF.

0

PIIA3323E

J13 (R) 

−

 J13 (R)

: Continuity should exist.

J13 (R) 

−

 Ground

: Continuity should not exist.

PIIA3324E

SE-126

CLIMATE CONTROLLED SEAT

Blower Motor Tachometer Signal Circuit Inspection

AIS002CJ

1. 

 CHECK BLOWER MOTOR TACHOMETER SIGNAL CIRCUIT

1.

Turn ignition switch ON.

2.

Check voltage between climate controlled seat control unit con-
nector and ground.

OK or NG

OK

>> GO TO 2.

NG

>> Replace climate controlled seat blower motor.

2. 

 CHECK BLOWER MOTOR HARNESS

1.

Turn ignition switch OFF.

2.

Disconnect climate controlled seat control unit and climate controlled seat blower motor connector.

3.

Check continuity between climate controlled seat control unit
connector B159 (driver side), B359 (passenger side) terminal
J14 (W) and climate controlled seat blower motor connector
B155 (driver side), B355 (passenger side) terminal J14 (W).

4.

Check continuity between climate controlled seat control unit
connector B159 (driver side), B359 (passenger side) terminal
J14 (W) and ground.

OK or NG

OK

>> Blower motor tachometer signal circuit check is OK.

NG

>> Repair or replace harness between climate controlled seat control unit and climate controlled seat

blower motor.

Climate Controlled Seat Control Unit Inspection

AIS002N3

1. 

CHECK THE CLIMATE CONTROLLED SEAT CONTROL UNIT

Does the climate controlled seat operate normally the driver side or passenger side climate controlled seat
control unit is exchanged.

OK or NG

OK

>> Climate controlled seat control unit check is OK.

NG

>> Replace climate controlled seat control unit.

Connector

Terminal

(Wire color)

Condition

Voltage (V)

(Approx.)

(+)

(–)

B159

(Driver side),

B359

(Passenger side)

J14(W)

Ground

Turn ignition switch ON
Climate controlled seat 
switch “HEAT” or “COOL”
temperature dial 1 – 4.

 5 – 7

Turn ignition switch OFF.

0

PIIA3321E

J14 (W) 

−

 J14 (W)

: Continuity should exist.

J14 (W) 

−

 Ground

: Continuity should not exist.

PIIA3322E

FRONT SEAT

SE-127

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F

G

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M

A

B

SE

FRONT SEAT

PFP:87000

Removal and Installation

AIS001KW

PIIA3121E

SE-128

FRONT SEAT

1.

Seatback board

2.

Inner stay

3.

Side air bag module

4.

Seatback frame

5.

Lumber support link

6.

Lumbar support plate

7.

Headrest

8.

Headrest holder (locked)

9.

Headrest holder (free)

10.

Seatback trim

11. Seatback pad

12. Seat cushion trim

13.

Seat cushion pad

14. Reclining inner device

15. Reclining device rod

16.

Reclining outer device

17.

Climate controlled seat switch 
assembly

18.

Climate controlled seat switch 
bracket

19.

Seat cushion frame

20. Power seat switch

21. Seat cushion outer finisher

22.

Lumbar support switch knob

23. Reclining switch knob

24. Slide & lifter switch knob

25.

Power seat harness

26. Seat cushion inner finisher

27. Seat belt buckle

28.

Seat lifter link rear bracket

29. Seat cushion inner rod

30. Lifter motor unit assembly

31.

Inner sliding assembly

32. Outer sliding assembly

33. Seat lifter link front bracket

34.

Driver seat control unit

35. Seat cushion outer rod

36. Sliding motor inner cover

37.

Sliding motor inner

38. Sliding motor wire pad

39. Driver seat control unit bracket

40.

Flexible wire

41. Seat cushion front finisher

42. Sliding motor outer cover

43.

Sliding motor outer