Infiniti Q45. Manual - part 840

POWER SEAT

SE-115

C

D

E

F

G

H

J

K

L

M

A

B

SE

2. 

CHECK REAR POWER SEAT SWITCH HARNESS

1.

Disconnect rear power seat control unit connector and rear
power seat switch connector.

2.

Check continuity between rear power seat control unit connector
B168 (LH), B368 (RH) terminal 18, 24 and rear power seat
switch connector D55 (LH), D75 (RH) terminal 7, 8.

3.

Check continuity between rear power seat control unit connector B168 (LH), B368 (RH) terminal 18, 24
and ground.

OK or NG

OK

>> GO TO 3.

NG

>> Repair or replace harness between rear power seat control unit and rear power seat switch.

3. 

CHECK REAR POWER SEAT SWITCH

Check continuity between rear power seat switch as follows.

OK or NG

OK

>> GO TO 4.

NG

>> Replace rear power seat switch.

4. 

CHECK REAR POWER SEAT SWITCH GROUND CIRCUIT

Check continuity between rear power seat switch connector D55
(LH), D75 (RH) terminal 2 and ground.

OK or NG

OK

>> Replace rear power seat control unit.

NG

>> Repair or replace harness between rear power seat

switch and ground.

LH

18 (BR/W) 

−

 7 (G/Y)

:Continuity should exist

24 (L/G) 

−

 8 (OR/L)

:Continuity should exist

RH

18 (BR/W) 

−

 8 (OR/L)

:Continuity should exist

24 (L/G) 

−

 7 (G/Y)

:Continuity should exist

18 (BR/W) 

−

 Ground

:Continuity should not exist

24 (L/G) 

−

 Ground

:Continuity should not exist

PIIA4018E

Terminal

Condition

Continuity

LH

7

2

Rear power seat switch (sliding switch) backward

Yes

Rear power seat switch (sliding switch) OFF

No

8

Rear power seat switch (sliding switch) forward

Yes

Rear power seat switch (sliding switch) OFF

No

RH

7

Rear power seat switch (sliding switch) forward

Yes

Rear power seat switch (sliding switch) OFF

No

8

Rear power seat switch (sliding switch) backward

Yes

Rear power seat switch (sliding switch) OFF

No

PIIA3985E

2 (B) 

−

 Ground

:Continuity should exist

PIIA3986E

SE-116

POWER SEAT

Check Auto Return Cancel Switch Circuit 1

NIS0013X

WITH HEATED SEAT

1. 

CHECK AUTO RETURN CANCEL SWITCH POWER SUPPLY

1.

Turn ignition switch OFF.

2.

Check voltage between rear power seat control unit connector
and ground.

OK or NG

OK

>> Auto return cancel switch circuit check is OK.

NG

>> GO TO 2.

2. 

CHECK REAR POWER SEAT SWITCH HARNESS

1.

Disconnect rear power seat control unit connector and auto
return cancel switch connector.

2.

Check continuity between rear power seat control unit connector
B163 (LH), B363 (RH) terminal 36 and auto return cancel switch
connector B504 terminal 1.

3.

Check continuity between rear power seat control unit connector
B163 (LH), B363 (RH) terminal 36 and ground.

OK or NG

OK

>> Check the condition of the harness and connector.

NG

>> Repair or replace harness between rear power seat control unit and auto return cancel switch.

WITHOUT HEATED SEAT

1. 

CHECK AUTO RETURN CANCEL SWITCH POWER SUPPLY

1.

Turn ignition switch OFF.

2.

Check voltage between rear power seat control unit connector
and ground.

OK or NG

OK

>> Auto return cancel switch circuit check is OK.

NG

>> GO TO 2.

Connector

Terminal

(Wire color)

Condition

Voltage (V) 

(Approx.)

(+)

(–)

B163 (LH)

B363 (RH)

36 (LG/R)

Ground

Auto return cancel switch ON 
and, rear door LH open

5

Other than above

0

PIIA3987E

36 (LG/R) 

−

 1 (BR)

:Continuity should exist

36 (LG/R) 

−

 Ground

:Continuity should not exist

PIIA3988E

Connector

Terminal

(Wire color)

Condition

Voltage (V) 

(Approx.)

(+)

(–)

B168 (LH)

B368 (RH)

36 (LG/R)

Ground

Auto return cancel switch ON
and, rear door open

5

Other than above

0

PIIA4021E

POWER SEAT

SE-117

C

D

E

F

G

H

J

K

L

M

A

B

SE

2. 

CHECK AUTO CANCEL SWITCH HARNESS

1.

Disconnect rear power seat control unit connector and auto
return cancel switch connector.

2.

Check continuity between rear power seat control unit connector
B168 (LH), B368 (RH) terminal 36 and auto return cancel switch
connector B504 terminal 1.

3.

Check continuity between rear power seat control unit connector
B168 (LH), B368 (RH) terminal 36 and ground.

OK or NG

OK

>> Check the harness and connector.

NG

>> Repair or replace harness between rear power seat control unit and auto return cancel switch.

Check Auto Return Cancel Switch Circuit 2

NIS0013Y

WITH HEATED SEAT

1. 

CHECK AUTO RETURN CANCEL SWITCH HARNESS

1.

Turn ignition switch OFF.

2.

Disconnect rear power seat control unit connector and auto
return cancel switch connector.

3.

Check continuity between rear power seat control unit connector
B163 (LH), B363 (RH) terminal 36 and auto return cancel switch
connector B504 terminal 1.

4.

Check continuity between rear power seat control unit connector
B163 (LH), B363 (RH) terminal 36 and ground.

OK or NG

OK

>> GO TO 2.

NG

>> Repair or replace harness between rear power seat control unit and auto return cancel switch.

2. 

CHECK AUTO RETURN CANCEL SWITCH

Check continuity between auto cancel switch as follows.

OK or NG

OK

>> GO TO 3.

NG

>> Replace auto return cancel switch.

36 (LG/R) 

−

 1 (BR)

:Continuity should exist

36 (LG/R) 

−

 Ground

:Continuity should not exist

PIIA4022E

36 (LG/R) 

−

 1 (BR)

:Continuity should exist

36 (LG/R) 

−

 Ground

:Continuity should not exist

PIIA3988E

Terminal

Condition

Continuity

1

2

Auto return cancel switch cancelled

Yes

Auto return cancel switch ON

No

PIIA3989E

SE-118

POWER SEAT

3. 

CHECK AUTO RETURN CANCEL SWITCH GROUND HARNESS

Check continuity between auto return cancel switch connector B504
terminal 2 and ground.

OK or NG

OK

>> Check the harness and connector.

NG

>> Repair or replace harness between auto return cancel

switch and ground.

WITHOUT HEATED SEAT

1. 

CHECK REAR AUTO RETURN CANCEL SWITCH HARNESS

1.

Turn ignition switch OFF.

2.

Disconnect rear power seat control unit connector and auto
return cancel switch connector.

3.

Check continuity between rear power seat control unit connector
B168 (LH), B368 (RH) terminal 36 and auto return cancel switch
connector B504 terminal 1.

4.

Check continuity between rear power seat control unit connector
B168 (LH), B368 (RH) terminal 36 and ground.

OK or NG

OK

>> GO TO 2.

NG

>> Repair or replace harness between rear power seat control unit and auto return cancel switch.

2. 

CHECK AUTO RETURN CANCEL SWITCH

Check continuity between auto cancel switch as follows.

OK or NG

OK

>> GO TO 3.

NG

>> Replace auto return cancel switch.

2 (B) 

−

 Ground

:Continuity should exist

PIIA3990E

36 (LG/R) 

−

 1 (BR)

:Continuity should exist

36 (LG/R) 

−

 Ground

:Continuity should not exist

PIIA4022E

Terminal

Condition

Continuity

1

2

Auto return cancel switch cancelled

Yes

Auto return cancel switch ON

No

PIIA3989E