Infiniti G37 Coupe. Manual - part 17

ADP-62

< COMPONENT DIAGNOSIS >

B2128 UART COMMUNICATION LINE

Is the inspection result normal?

YES

>> Replace automatic drive positioner control unit. Refer to 

ADP-237, "Removal and Installation"

.

NO

>> Repair or replace harness.

Driver seat control unit connec-

tor

Terminal

Ground

Continuity 

B503

1

Not existed

17

POWER SUPPLY AND GROUND CIRCUIT

ADP-63

< COMPONENT DIAGNOSIS >

C

D

E

F

G

H

I

K

L

M

A

B

ADP

N

O

P

POWER SUPPLY AND GROUND CIRCUIT

DRIVER SEAT CONTROL UNIT

DRIVER SEAT CONTROL UNIT : Diagnosis Procedure

INFOID:0000000001693677

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

1.

CHECK POWER SUPPLY CIRCUIT 

1.

Turn ignition switch OFF.

2.

Check voltage between driver 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 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:0000000001693678

1.

PERFORM ADDITIONAL SERVICE

Perform additional service when removing battery negative terminal.

>> Refer to 

ADP-9, "ADDITIONAL SERVICE WHEN REMOVING BATTERY NEGATIVE TERMINAL

: Description"

.

AUTOMATIC DRIVE POSITIONER CONTROL UNIT

AUTOMATIC DRIVE POSITIONER CONTROL UNIT : Diagnosis Procedure

INFOID:0000000001693679

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

1.

CHECK POWER SUPPLY CIRCUIT

1.

Turn ignition switch OFF.

2.

Check voltage between automatic drive positioner control unit harness connector and ground.

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

ADP-64

< 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 automatic drive positioner control unit harness connector and ground.

Is the inspection result normal?

YES

>> Automatic drive positioner control unit power supply and ground circuit are OK.

NO

>> Repair or replace harness between automatic drive positioner control unit and ground.

AUTOMATIC DRIVE POSITIONER CONTROL UNIT : Special Repair Requirement

INFOID:0000000001693680

1.

PERFORM ADDITIONAL SERVICE

Perform additional service when removing battery negative terminal.

>> Refer to 

ADP-9, "ADDITIONAL SERVICE WHEN REMOVING BATTERY NEGATIVE TERMINAL

: Description"

.

Terminals

Voltage (V)

(Approx.)

(+)

(–)

Automatic drive positioner control 

unit connector

Terminal

M52

34

Ground

Battery voltage

39

Automatic drive positioner control 

unit connector

Terminal

Ground

Continuity

M52

40

Existed

48

SLIDING SWITCH

ADP-65

< COMPONENT DIAGNOSIS >

C

D

E

F

G

H

I

K

L

M

A

B

ADP

N

O

P

SLIDING SWITCH

Description

INFOID:0000000001693682

Sliding switch is equipped to the power seat switch on the seat cushion side surface. The operation signal is
inputted to the driver seat control unit when the sliding switch is operated.

Component Function Check

INFOID:0000000001693683

1.

CHECK FUNCTION

1.

Select “SLIDE SW-FR”, “SLIDE SW-RR” in “Data Monitor” mode with CONSULT-III. 

2.

Check sliding switch signal under the following conditions.

Is the indication normal?

YES

>> INSPECTION END

NO

>> Perform diagnosis procedure. Refer to 

ADP-65, "Diagnosis Procedure"

.

Diagnosis Procedure

INFOID:0000000001693684

1.

CHECK SLIDING SWITCH SIGNAL

1.

Turn ignition switch ON.

2.

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

Is the inspection result normal?

YES

>> GO TO 5.

NO

>> GO TO 2.

2.

CHECK SLIDING SWITCH CIRCUIT

1.

Turn ignition switch OFF.

2.

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

3.

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

4.

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

Monitor item

Condition

Status

SLIDE SW-FR

Sliding switch (forward)

Operate

ON

Release

OFF

SLIDE SW-RR

Sliding switch (backward)

Operate

ON

Release

OFF

Driver seat control unit

connector

Terminals

Condition

Voltage (V)

(Approx.)

(+)

(–)

B503

11

Ground

Sliding switch

Operate (backward)

0

Release

Battery voltage

26

Operate (forward)

0

Release

Battery voltage

Driver seat control unit

connector

Terminal

Power seat switch

connector

Terminal

Continuity

B503

11

B510

11

Existed

26

26