Infiniti FX35, FX50 (S51). Manual - part 26

ADP-96

< DTC/CIRCUIT DIAGNOSIS >

LIFTING SENSOR (FRONT)

Is the inspection result normal?

YES

>> Replace lifting motor (front).

NO

>> Repair or replace harness.

LIFTING SENSOR (REAR)

ADP-97

< DTC/CIRCUIT DIAGNOSIS >

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LIFTING SENSOR (REAR)

Description

INFOID:0000000005249735

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

Component Function Check

INFOID:0000000005249736

1.

CHECK FUNCTION

1.

Turn ignition switch ON.

2.

Select “LIFT RR PULSE” in “Data monitor” mode with CONSULT-III.

3.

Check lifting sensor (rear) 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-97, "Diagnosis Procedure"

.

Diagnosis Procedure

INFOID:0000000005249737

1.

CHECK LIFTING SENSOR (REAR) SIGNAL

1.

Turn ignition switch ON.

2.

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

Is the inspection result normal?

YES

>> Replace driver seat control unit. Refer to 

ADP-215, "Removal and Installation"

.

NO

>> GO TO 2.

2.

CHECK LIFTING SENSOR (REAR) CIRCUIT

1.

Turn ignition switch OFF.

2.

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

3.

Check the continuity between driver seat control unit harness connector and lifting motor (rear) harness
connector.

Monitor item

Condition

Value

LIFT RR PULSE

Seat lifting (rear)

Operate (Up)

Change (increase)

*1

Operate (Down)

Change (decrease)

*1

Release

No change

*1

(+)

(–)

Condition

Voltage (V)

(Approx.)

Driver seat control unit

Connector

Terminal

B451

10

Ground

Seat Lifting
(rear)

Operate

Other than above

0 or 5

JMJIA0119ZZ

ADP-98

< DTC/CIRCUIT DIAGNOSIS >

LIFTING SENSOR (REAR)

4.

Check the 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 LIFTING SENSOR (REAR) POWER SUPPLY

1.

Connect driver seat control unit connector.

2.

Turn ignition switch ON.

3.

Check the voltage between lifting motor (rear) harness connector and ground.

Is the inspection result normal?

YES

>> GO TO 5.

NO

>> GO TO 4.

4.

CHECK LIFTING SENSOR (REAR) POWER SUPPLY CIRCUIT 

1.

Turn ignition switch OFF.

2.

Disconnect driver seat control unit connector.

3.

Check the continuity between driver seat control unit harness connector and lifting motor (rear) harness
connector.

4.

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

Is the inspection result normal?

YES

>> Replace driver seat control unit. Refer to 

ADP-215, "Removal and Installation"

.

NO

>> Repair or replace harness.

5.

CHECK LIFTING SENSOR (REAR) GROUND 

1.

Turn ignition switch OFF.

2.

Disconnect driver seat control unit connector.

3.

Check the continuity between driver seat control unit harness connector and lifting motor (rear) harness
connector.

Driver seat control unit

Lifting motor (rear)

Continuity

Connector

Terminal

Connector

Terminal

B451

10

B456

10

Existed

Driver seat control unit

Ground

Continuity 

Connector

Terminal

B451

10

Not Existed

(+)

(–)

Voltage (V)

(Approx.)

Lifting motor (rear)

Connector

Terminal

B456

16

Ground

5

Driver seat control unit

Lifting motor (rear)

Continuity

Connector

Terminal

Connector

Terminal

B451

16

B456

16

Existed

Driver seat control unit

Ground

Continuity 

Connector

Terminal

B451

16

Not existed

Driver seat control unit

Lifting motor (rear)

Continuity

Connector

Terminal

Connector

Terminal

B451

31

B456

31

Existed

LIFTING SENSOR (REAR)

ADP-99

< DTC/CIRCUIT DIAGNOSIS >

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Is the inspection result normal?

YES

>> Replace lifting motor (rear).

NO

>> Repair or replace harness.