Infiniti G37 Coupe. Manual - part 20

ADP-74

< COMPONENT DIAGNOSIS >

FORWARD SWITCH

Is the inspection result normal?

YES

>> GO TO 4.

NO

>> Repair or replace harness.

4.

CHECK DRIVER SEAT CONTROL UNIT OUTPUT

1.

Connect the driver seat control unit connector.

2.

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

Is the inspection result normal?

YES

>> GO TO 5.

NO

>> Replace driver seat control unit. Refer to 

ADP-236, "Removal and Installation"

.

5.

CHECK FORWARD SWITCH

Refer to 

ADP-74, "Component Inspection"

.

Is the inspection result normal?

YES

>> Check intermittent incident. Refer to 

GI-38, "Intermittent Incident"

.

NO

>> Replace forward switch. (Built in seat back frame.)

Component Inspection

INFOID:0000000001838032

1.

CHECK FORWARD SWITCH

1.

Turn ignition switch OFF.

2.

Disconnect forward switch connector.

3.

Check continuity between forward switch terminals.

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Replace forward switch. (Built in seat back frame.)

Forward switch

Ground

Continuity

Connector

Terminal

B512

32

Ground

Existed

Driver seat control unit

Ground

Voltage (V)

(Approx.)

Connector

Terminal

B504

41

Ground

5

Forward switch

Condition

Continuity

Terminal

41

32

Driver side seat 
back

Folded up

Not existed

Folded down

Existed

SEAT BELT BUCKLE SWITCH

ADP-75

< COMPONENT DIAGNOSIS >

C

D

E

F

G

H

I

K

L

M

A

B

ADP

N

O

P

SEAT BELT BUCKLE SWITCH

Description

INFOID:0000000001838036

Seat belt buckle switch is installed in seat belt buckle. Seat belt buckle switch detects condition of seat belt.

Component Function Check

INFOID:0000000001838037

1.

CHECK FUNCTION

1.

Select “SEAT BELT SW” in “Data Monitor” mode with CONSULT-III. 

2.

Check the forward switch signal under the following condition.

Is the indication normal?

YES

>> INSPECTION END

NO

>> Refer to  

ADP-75, "Diagnosis Procedure"

.

Diagnosis Procedure

INFOID:0000000001838038

1.

CHECK SEAT BELT BUCKLE SWITCH SIGNAL

1.

Turn ignition switch OFF.

2.

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

Is the inspection result normal?

YES

>> Check intermittent incident. Refer to 

GI-38, "Intermittent Incident"

.

NO

>> GO TO 2.

2.

CHECK SEAT BELT BUCKLE SWITCH CIRCUIT

1.

Disconnect driver seat control unit connector and seat belt buckle switch connector.

2.

Check continuity between driver seat control unit harness connector and seat belt buckle switch harness
connector.

3.

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

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> Repair or replace harness.

3.

CHECK SEAT BELT BUCKLE SWITCH GROUND CIRCUIT

Check continuity between seat belt buckle switch harness connector and ground.

Test item

Condition

Status

SEAT BELT SW

Driver side seat belt

Fastened

ON

Released

OFF

Driver seat control unit

Ground

Condition

Voltage (V)

(Approx.)

Connector

Terminal

B503

5

Ground

Driver side 

seat belt

Fastened

0

Released

5

Driver seat control unit

Seat belt buckle switch

Continuity

Connector

Terminal

Connector

Terminal

B503

5

B13

1

Existed

Driver seat control unit

Ground

Continuity 

Connector

Terminal

B503

5

Ground

Not existed

ADP-76

< COMPONENT DIAGNOSIS >

SEAT BELT BUCKLE SWITCH

Is the inspection result normal?

YES

>> GO TO 4.

NO

>> Repair or replace harness.

4.

CHECK DRIVER SEAT CONTROL UNIT OUTPUT

1.

Connect the driver seat control unit connector.

2.

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

Is the inspection result normal?

YES

>> GO TO 5.

NO

>> Replace driver seat control unit. Refer to 

ADP-236, "Removal and Installation"

.

5.

CHECK SEAT BELT BUCKLE SWITCH

Refer to 

ADP-76, "Component Inspection"

.

Is the inspection result normal?

YES

>> Check intermittent incident. Refer to 

GI-38, "Intermittent Incident"

.

NO

>> Replace seat belt buckle switch. (Built in seat belt buckle.)

Component Inspection

INFOID:0000000001838039

1.

CHECK SEAT BELT BUCKLE SWITCH

1.

Turn ignition switch OFF.

2.

Disconnect seat belt buckle switch connector.

3.

Check continuity between seat belt buckle switch terminals.

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Replace seat belt buckle switch. (Built in seat belt buckle.)

Seat belt buckle switch

Ground

Continuity

Connector

Terminal

B13

2

Ground

Existed

Driver seat control unit

Ground

Voltage (V)

(Approx.)

Connector

Terminal

B503

5

Ground

5

Seat belt buckle switch

Condition

Continuity

Terminal

1

2

Driver side seat 
belt

Fastened

Not existed

Released

Existed

SLIDING LIMIT SWITCH

ADP-77

< COMPONENT DIAGNOSIS >

C

D

E

F

G

H

I

K

L

M

A

B

ADP

N

O

P

SLIDING LIMIT SWITCH

Description

INFOID:0000000001838043

Sliding limit switch is installed on seat cushion frame. Sliding limit switch detects condition of seat sliding.

Component Function Check

INFOID:0000000001838044

1.

CHECK FUNCTION

1.

Select “FWD LIMIT SW” in “Data Monitor” mode with CONSULT-III. 

2.

Check the sliding limit switch signal under the following condition.

Is the indication normal?

YES

>> INSPECTION END

NO

>> Go to 

ADP-77, "Diagnosis Procedure"

.

Diagnosis Procedure

INFOID:0000000001838045

1.

CHECK SLIDING LIMIT SWITCH SIGNAL

1.

Turn ignition switch OFF.

2.

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

Is the inspection result normal?

YES

>> Check intermittent incident. Refer to 

GI-38, "Intermittent Incident"

NO

>> GO TO 2.

2.

CHECK SLIDING LIMIT SWITCH CIRCUIT

1.

Disconnect driver seat control unit connector and sliding limit switch connector.

2.

Check continuity between driver seat control unit harness connector and sliding limit switch harness con-
nector.

3.

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

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> Repair or replace harness.

3.

CHECK SLIDING LIMIT SWITCH GROUND CIRCUIT

Check continuity between sliding limit switch harness connector and ground.

Test item

Condition

Status

FWD LIMIT SW

Seat sliding

Front edge

ON

Other than above

OFF

Driver seat control unit

Ground

Condition

Voltage (V)

(Approx.)

Connector

Terminal

B503

4

Ground

Seat sliding

Front edge

0

Other than 
above

5

Driver seat control unit

Sliding limit switch

Continuity

Connector

Terminal

Connector

Terminal

B503

4

B514

4

Existed

Driver seat control unit

Ground

Continuity 

Connector

Terminal

B503

4

Ground

Not existed