Infiniti Q45. Manual - part 837

POWER SEAT

SE-103

C

D

E

F

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K

L

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A

B

SE

Terminals and Reference Values for Passenger Side Power Seat Switch

NIS0013K

Terminals and Reference Values for Rear Power Seat Control Unit 

NIS0013L

Termi-

nal

Wire 

Color

Item

Signal

input/output

Condition

Voltage (V) 

(Approx.)

1

W

Sliding motor forward signal

Output

When sliding switch forward is operated

Battery voltage

Other than above

0

2

G

Reclining motor forward signal

Output

When reclining switch forward is operated

Battery voltage

Other than above

0

4

R

Rear lifting motor DOWN signal

Output

When rear lifting switch DOWN is operated

Battery voltage

Other than above

0

6

Y

Rear lifting motor UP signal

Output

When rear lifting switch UP is operated

Battery voltage

Other than above.

0

8

B/W

Sliding motor backward signal

Output

When sliding switch backward is operated

Battery voltage

Other than above

0

9

PU

Reclining motor backward signal

Output

When reclining switch backward is operated

Battery voltage

Other than above

0

10

OR

Front lifting motor DOWN signal

Output

When front lifting switch DOWN is operated

Battery voltage

Other than above

0

11

LG

Front lifting motor UP signal

Output

When front lifting switch UP is operated.

Battery voltage

Other than above

0

15A

B

Ground

—

—

0

16

P

BAT power supply

Input

—

Battery voltage

Ter-

minal

Wire 

Color

Item

Signal

input/output

Condition

Voltage (V) 

(Approx.)

2

G

BAT power supply

Input

—

Battery voltage

4

Y

Sliding motor forward signal

Output

When sliding switch forward is 
operated

Battery voltage

Other than above

0

11

GY

Sliding motor backward signal

Output

When sliding switch backward is 
operated

Battery voltage

Other than above

0

15

B

Ground

—

—

0

18

BR/W

Sliding switch backward signal

Input

When sliding switch backward is 
operated

0

Other than above

Battery voltage

21

W/G

Sliding sensor signal

Input

Sliding device active

Sliding device inactive

0 or 5

24

L/G

Sliding switch forward signal

Input

When sliding switch forward is 
operated

0

Other than above.

Battery voltage

28

G/B

Ground

—

—

0

SIIA0690J

SE-104

POWER SEAT

Work Flow

NIS0013M

1.

Check the symptom and customer's requests.

2.

Understand the outline of system. Refer to 

SE-93, "System Description"

 .

3.

According to the trouble diagnosis chart, repair or replace the cause of the malfunction. Refer to 

SE-104,

"Trouble Diagnoses Symptom Chart"

 .

4.

Does power seat operate normally? YES: GO TO 5, NO: GO TO 4.

5.

INSPECTION END.

Trouble Diagnoses Symptom Chart

NIS0013N

●

Check that other systems using the signal of the following systems operate normally.

36

LG/R

Cancel switch signal

Input

Cancel switch ON with rear door 
(LH) open

5

Cancel switch ON with rear door 
(LH) close

0

Cancel switch CANCEL

0

43

GY/R

Rear door switch (LH) signal

Input

Rear door (LH) open (ON)

0

Rear door (LH) close (OFF)

Battery voltage

74

G/R

Ground (sensor system)

—

—

0

Ter-

minal

Wire 

Color

Item

Signal

input/output

Condition

Voltage (V) 

(Approx.)

Symptom

Diagnoses / service procedure

Refer to 

page

Front power seat passenger side and rear power seat LH, 
RH do not operate.

Check power seat power supply circuit

SE-105

Front power seat passenger side does not operate, but rear 
power seat is operated.

Check front power seat passenger side power supply circuit

SE-105

Front power seat passenger side does not do the sliding.

Check front power seat passenger side sliding circuit

SE-106

Front power seat passenger side does not do the reclining.

Check front power seat passenger side reclining circuit

SE-107

Front power seat passenger side front does not do the 
front lifting.

Check front power seat passenger side  front lifting circuit

SE-108

Front power seat passenger side rear does not do the 
rear lifting.

Check front power seat passenger side  rear lifting circuit

SE-109

Rear power seat LH or RH sliding switch does not operate 
moreover, turnout/return function does not operate if the 
door is opened.

1.

Check rear power seat control unit power 
supply and ground circuit

SE-109

2.

Check rear power seat sliding motor circuit

SE-111

3.

Replace rear power seat sliding motor

—

Rear power seat LH or RH does not operate but turnout/
return function operates when the door is opened.

Check rear power seat switch circuit

SE-113

Rear power seat LH and RH turnout/return function do not 
operate, but operate by sliding switch.

Check auto return cancel switch circuit 2

SE-117

Rear power seat LH or RH turnout/return function does not 
operated, but operates by a sliding switch.

1.

Check rear door switch circuit 

SE-119

2.

Check auto return cancel switch circuit 1

SE-116

3.

Check rear power seat sliding sensor circuit

SE-122

4.

Replace rear power seat control unit 

—

POWER SEAT

SE-105

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A

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SE

Check Power Seat Power Supply Circuit

NIS0013O

1. 

CHECK FUSIBLE LINK 

Check 40A fusible link (letter H  located in the fuse and fusible link box).
NOTE:
Refer to

SE-92, "Component Parts and Harness Connector Location"

 .

OK or NG

OK

>> Check the condition of the harness.

NG

>> If fuse is blown, be sure to eliminate cause of malfunction before installing new fuse, refer to 

PG-

2, "POWER SUPPLY ROUTING"

 .

Check Front Power Seat Passenger Side Power Supply Circuit

NIS0013P

1. 

 CHECK FRONT POWER SEAT PASSENGER SIDE POWER SUPPLY CIRCUIT

1.

Turn ignition switch OFF.

2.

Disconnect front power seat passenger side switch connector.

3.

Check voltage between front power seat passenger side switch
connector B342 terminal 16 and ground.

OK or NG

OK

>> GO TO 2.

NG

>> Repair or replace harness between fuse and fusible link

box and front power seat passenger side switch.

2. 

CHECK POWER SEAT SWITCH

Check continuity between front power seat passenger side switch
connector.

OK or NG

OK

>> GO TO 3.

NG

>> Replace front power seat passenger side switch.

3. 

CHECK FRONT POWER SEAT PASSENGER SIDE GROUND CIRCUIT

Check continuity between front power seat passenger side switch
connector B342 terminal 15A and ground.

OK or NG

OK

>> Check connector.

NG

>> Repair or replace harness between front power seat

passenger side switch and ground.

16 (P) 

−

 Ground

: Battery voltage

PIIA3963E

Terminal

Condition

Continuity

16

15A

Sliding switch turn forward and backward

Yes

Reclining switch turn forward and backward

Yes

Lifting switch (front) fully up and fully down

Yes

Lifting switch (rear) fully up and fully down

Yes

Other than above

No

PIIB0384E

15A (B) 

−

 Ground

:Continuity should exist.

PIIA3965E

SE-106

POWER SEAT

Check Front Power Seat Passenger Side Sliding Circuit

NIS0013Q

1. 

CHECK POWER SEAT SWITCH

1.

Turn ignition switch OFF.

2.

Disconnect front power seat passenger side switch connector.

3.

Check continuity between front power seat passenger side
switch as follows.

OK or NG

OK

>> GO TO 2.

NG

>> Replace front power seat passenger side switch.

2. 

CHECK SLIDING MOTOR HARNESS

1.

Disconnect sliding motor connector.

2.

Check continuity between front power seat passenger side
switch connector B342 terminals 1, 8 and sliding motor connec-
tor B343 terminals 1, 8.

3.

Check continuity between front power seat passenger side
switch connector B342 terminal 1, 8 and ground.

OK or NG

OK

>> Replace sliding motor.

NG

>> Repair or replace harness between front power seat passenger side switch and sliding motor.

Terminal

Condition

Continuity

1

15A

Sliding switch backward

Yes

16

Sliding switch forward

Yes

15A, 16

Other than above

No

8

15A

Sliding switch forward

Yes

16

Sliding switch backward

Yes

15A, 16

Other than above

No

PIIA3967E

1 (W) 

−

 1 (W)

:Continuity should exist.

8 (B/W) 

−

 8 (B/W)

:Continuity should exist.

1 (W) 

−

 Ground

:Continuity should not exist.

8 (B/W) 

−

 Ground

:Continuity should not exist.

PIIA3968E