Infiniti G37 Coupe. Manual - part 26

 

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Infiniti G37 Coupe. Manual - part 26

 

 

ADP-98

< COMPONENT DIAGNOSIS >

RECLINING SENSOR

RECLINING SENSOR

Description

INFOID:0000000001693737

• The reclining motor is installed on the seatback frame.
• The pulse signal is transmitted to the driver seat control unit when reclining is operated.
• The driver seat control unit counts the pulse and calculates the reclining amount of the seat.

Component Function Check

INFOID:0000000001693738

1.

CHECK FUNCTION

1.

Select “RECLN PULSE” in “Data Monitor” mode with CONSULT-III.

2.

Check reclining sensor signal under the following conditions.

*1

: The value at the seat position attained when the battery is connected is considered to be 32768.

Is the indication normal?

YES

>> INSPECTION END

NO

>> Perform diagnosis procedure. Refer to 

ADP-98, "Diagnosis Procedure"

.

Diagnosis Procedure

INFOID:0000000001693739

1.

CHECK RECLINING SENSOR SIGNAL

1.

Turn ignition switch ON.

2.

Read voltage signal between driver seat control unit harness connector and ground with oscilloscope.

Is the inspection result normal?

YES

>> GO TO 7.

NO

>> GO TO 2.

2.

CHECK RECLINING SENSOR CIRCUIT

1.

Turn ignition switch OFF.

2.

Disconnect driver seat control unit connector and reclining motor connector.

3.

Check continuity between driver seat control unit harness connector and reclining motor harness connec-
tor.

Monitor item

Condition

Value

RECLN PULSE

Seat reclining

Operate (forward)

Change (increase)

*1

Operate (backward)

Change (decrease)

*1

Release

No change

*1

Terminals

Condition

Voltage signal

(+)

(–)

Driver seat control unit 

Terminal

B503

9

Ground

Seat reclining

Operate

Other than 
above

0 or 5

JMJIA0119ZZ

Driver seat control unit 

connector

Terminal

Reclining motor

connector

Terminal

Continuity

B503

9

B523

9

Existed

RECLINING SENSOR

ADP-99

< COMPONENT DIAGNOSIS >

C

D

E

F

G

H

I

K

L

M

A

B

ADP

N

O

P

4.

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 RECLINING SENSOR POWER SUPPLY

1.

Connect driver seat control unit connector.

2.

Turn ignition switch ON.

3.

Check voltage between reclining motor harness connector and ground.

Is the inspection result normal?

YES

>> GO TO 5.

NO

>> GO TO 4.

4.

CHECK RECLINING SENSOR POWER SUPPLY CIRCUIT 

1.

Turn ignition switch OFF.

2.

Disconnect driver seat control unit connector.

3.

Check continuity between driver seat control unit harness connector and reclining motor harness connec-
tor.

4.

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

Is the inspection result normal?

YES

>> GO TO 7.

NO

>> Repair or replace harness.

5.

CHECK RECLINING SENSOR GROUND 

1.

Turn ignition switch OFF.

2.

Disconnect driver seat control unit connector.

3.

Check continuity between driver seat control unit harness connector and reclining motor harness connec-
tor.

Is the inspection result normal?

YES

>> GO TO 6.

NO

>> Repair or replace harness.

6.

CHECK SEAT OPERATION

1.

Connect driver seat control unit connector and reclining motor connector.

Driver seat control unit 

connector

Terminal

Ground

Continuity 

B503

9

Not existed

Terminals

Voltage (V)

(Approx.)

(+)

(–)

Reclining motor connector

Terminal

B523

16

Ground

5

Driver seat control unit

 connector

Terminal

Reclining motor

connector

Terminal

Continuity

B503

16

B523

16

Existed

Driver seat control unit 

connector

Terminal

Ground

Continuity 

B503

16

Not existed

Driver seat control unit

 connector

Terminal

Reclining motor

connector

Terminal

Continuity

B503

31

B523

31

Existed

ADP-100

< COMPONENT DIAGNOSIS >

RECLINING SENSOR

2.

Check seat operation (except reclining operation) with memory function.

Is the operation normal?

YES

>> Replace reclining motor. (Built in seat slide cushion frame.)

NO

>> Replace driver seat control unit.

7.

CHECK INTERMITTENT INCIDENT

Refer to 

GI-38, "Intermittent Incident"

.

Is the inspection result normal?

YES

>> Replace driver seat control unit. Refer to 

ADP-236, "Removal and Installation"

.

NO

>> Repair or replace the malfunctioning part.

LIFTING SENSOR (FRONT)

ADP-101

< COMPONENT DIAGNOSIS >

C

D

E

F

G

H

I

K

L

M

A

B

ADP

N

O

P

LIFTING SENSOR (FRONT)

Description

INFOID:0000000001693740

• The lifting sensor (front) is installed on the seat slide cushion frame.
• The pulse signal is transmitted to the driver seat control unit when lifting (front) is operated.
• The driver seat control unit counts the pulse and calculates the lifting (front) amount of the seat.

Component Function Check

INFOID:0000000001693741

1.

CHECK FUNCTION

1.

Select “LIFT FR PULSE” in “Data Monitor” mode with CONSULT-III.

2.

Check lifting sensor (front) signal under the following conditions.

*1

:The value at the seat position attained when the battery is connected is considered to be 32768.

Is the indication normal?

YES

>> INSPECTION END

NO

>> Perform diagnosis procedure. Refer to 

ADP-101, "Diagnosis Procedure"

.

Diagnosis Procedure

INFOID:0000000001693742

1.

CHECK LIFTING SENSOR (FRONT) SIGNAL

1.

Turn ignition switch ON.

2.

Read voltage signal between driver seat control unit harness connector and ground with oscilloscope.

Is the inspection result normal?

YES

>> GO TO 7.

NO

>> GO TO 2.

2.

CHECK LIFTING SENSOR (FRONT) CIRCUIT

1.

Turn ignition switch OFF.

2.

Disconnect driver seat control unit connector and lifting motor (front) connector.

3.

Check continuity between driver seat control unit harness connector and lifting motor (front) harness con-
nector.

Monitor item

Condition

Value

LIFT FR PULSE

Seat lifting (front)

Operate (Up)

Change (increase)

*1

Operate (Down)

Change (decrease)

*1

Release

No change

*1

Terminals

Condition

Voltage signal

(+)

(–)

Driver seat control unit

Terminal

B503

25

Ground

Seat Lifting
(front)

Operate

Other than 
above

0 or 5

JMJIA0119ZZ

Driver seat control unit 

connector

Terminal

Lifting motor (front)

connector

Terminal

Continuity

B503

25

B527

25

Existed

 

 

 

 

 

 

 

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