Infiniti G37 Coupe. Manual - part 1091

 

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Infiniti G37 Coupe. Manual - part 1091

 

 

SE-32

< COMPONENT DIAGNOSIS >

POWER SUPPLY AND GROUND CIRCUIT

Is the inspection result normal?

YES

>> GO TO 2.

NO

>>

Check the following.

• Repair or replace harness between driver seat control unit and fuse block (J/B).
• Circuit breaker

2.

CHECK GROUND CIRCUIT

Check continuity between the driver seat control unit harness connector and ground.

Is the inspection result normal?

YES

>> Driver seat control unit power supply and ground circuit are OK.

NO

>> Repair or replace harness between driver seat control unit and ground.

DRIVER SEAT CONTROL UNIT : Special Repair Requirement

INFOID:0000000001694218

1.

PERFORM ADDITIONAL SERVICE

Perform additional service when removing battery negative terminal.

>> Refer to 

SE-7, "ADDITIONAL SERVICE WHEN REMOVING BATTERY NEGATIVE TERMINAL :

Description"

.

PASSENGER SEAT CONTROL UNIT

PASSENGER SEAT CONTROL UNIT : Diagnosis Procedure

INFOID:0000000001694219

NOTE:
Do not disconnect the battery negative terminal and the passenger seat control unit connector until DTC is
confirmed with CONSULT-III.

1.

CHECK POWER SUPPLY CIRCUIT

1.

Turn ignition switch OFF.

2.

Check voltage between passenger seat control unit harness connector and ground.

Is the inspection result normal?

YES

>> GO TO 2.

NO

>>

Check the following.

• Repair or replace harness between passenger seat control unit and fuse block (J/B).
• Repair or replace harness between passenger seat control unit and BCM. 

2.

CHECK GROUND CIRCUIT

Terminals

Voltage (V)

(Approx.)

(+)

(–)

Driver seat control unit connector

Terminal

B504

33

Ground

Battery voltage

40

Driver seat control unit

connector

Terminal

Ground

Continuity

B503

32

Existed

B504

48

Terminals

Voltage (V)

(Approx.)

(+)

(–)

Passenger seat control unit con-

nector

Terminal

B553

33

Ground

Battery voltage

40

POWER SUPPLY AND GROUND CIRCUIT

SE-33

< COMPONENT DIAGNOSIS >

C

D

E

F

G

H

I

K

L

M

A

B

SE

N

O

P

Check continuity between the passenger seat control unit harness connector and ground.

Is the inspection result normal?

YES

>> Passenger seat control unit power supply and ground circuit are OK.

NO

>> Repair or replace harness between driver seat control unit and ground.

PASSENGER SEAT CONTROL UNIT : Special Repair Requirement

INFOID:0000000001694220

1.

PERFORM ADDITIONAL SERVICE

Perform additional service when removing battery negative terminal.

>> Refer to 

SE-7, "ADDITIONAL SERVICE WHEN REMOVING BATTERY NEGATIVE TERMINAL :

Description"

.

Passenger seat control unit

connector

Terminal

Ground

Continuity

B552

32

Existed

B553

48

SE-34

< COMPONENT DIAGNOSIS >

POWER SEAT SWITCH

POWER SEAT SWITCH

DRIVER SIDE

DRIVER SIDE : Description

INFOID:0000000001694093

With a built-in reclining switch, sliding switch and lifting switch, power seat switch controls the power supplied
to each motor.

DRIVER SIDE : Component Function Check

INFOID:0000000001694094

1.

CHECK POWER SEAT SWITCH FUNCTION

Check power seat operation with power seat switch.

Is the inspection results normal?

YES

>> Power seat switch is OK.

NO

>> Refer to 

SE-34, "DRIVER SIDE : Diagnosis Procedure"

..

DRIVER SIDE : Diagnosis Procedure

INFOID:0000000001694095

1.

CHECK CIRCUIT BREAKER AND FUSIBLE LINK

Check that following circuit breaker and fusible link.

Is the inspection result normal?

YES

>> GO TO 2.

NO

>> Replace circuit breaker or fusible link after repairing affected circuit.

2.

CHECK POWER SUPPLY

1.

Turn ignition switch OFF.

2.

Disconnect power seat switch connector.

3.

Check continuity between power seat switch harness connector and ground.

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> Repair or replace harness.

3.

CHECK GROUND CIRCUIT

Check continuity between power seat switch and ground.

Is the inspection result normal?

YES

>> GO TO 4.

NO

>> Repair or replace harness.

4.

CHECK POWER SEAT SWITCH

Check power seat switch function.
Refer to 

SE-35, "DRIVER SIDE : Component Inspection"

.

Is the inspection result normal?

 Terminal No.

Signal name

Item

33

Battery power supply

Circuit breaker

Fusible link K

 Power seat switch

Ground

Voltage (V)

(Approx.)

Connector

Terminal

B511

33

Ground

Battery voltage

 Power seat switch

Ground

Continuity

 Connector

Terminal

B511

48

Ground

Existed

POWER SEAT SWITCH

SE-35

< COMPONENT DIAGNOSIS >

C

D

E

F

G

H

I

K

L

M

A

B

SE

N

O

P

YES

>> Power seat switch is OK.

NO

>> Replace power seat switch.

DRIVER SIDE : Component Inspection

INFOID:0000000001694096

1.

CHECK POWER SEAT SWITCH

1.

Turn ignition switch OFF.

2.

Remove power seat switch.

3.

Detect the malfunctioning switch.

Which switch is malfunctioning?

RECLINING SWITCH>>GO TO 2.
SLIDING SWITCH>>GO TO 3.
LIFTING SWITCH (FRONT)>>GO TO 4.
LIFTING SWITCH (REAR)>>GO TO 5.

2.

CHECK RECLINING SWITCH

Check continuity between power seat switch terminals.

Is the inspection result normal?

YES

>> Power seat switch (reclining switch) is OK.

NO

>> Replace power seat switch. Refer to 

SE-167, "Removal and Installation"

.

3.

CHECK SLIDING SWITCH

Check continuity between power seat switch terminals.

Is the inspection result normal?

YES

>> Power seat switch (sliding switch) is OK.

NO

>> Replace power seat switch. Refer to 

SE-167, "Removal and Installation"

.

4.

CHECK LIFTING SWITCH (FRONT)

Check continuity between power seat switch terminals.

Terminal

Switch condition

Continuity

27

33

Forward

Existed

Neutral

Not existed

Backward

Not existed

12

Forward

Not existed

Neutral

Not existed

Backward

Existed

27

48

Forward

Not existed

Neutral

Not existed

Backward

Existed

12

Forward

Existed

Neutral

Not existed

Backward

Not existed

Terminal

Switch condition

Continuity

22

33

Forward

Existed

Neutral

Not existed

Backward

Not existed

23

Forward

Not existed

Neutral

Not existed

Backward

Existed

 

 

 

 

 

 

 

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