Infiniti FX35, FX50 (S51). Manual — part 30

ADP-112

< DTC/CIRCUIT DIAGNOSIS >

LIFTING MOTOR (FRONT)

LIFTING MOTOR (FRONT)

Description

INFOID:0000000005249756

• The lifting motor (front) is installed to the seat cushion frame.
• The lifting motor (front) is activated with the driver seat control unit.
• The lifter (front) is moved upward/downward by changing the rotation direction of lifting motor (front).

Component Function Check

INFOID:0000000005249757

1.

CHECK FUNCTION

1.

Turn ignition switch ON.

2.

Select “SEAT LIFTER FR” in “Active test” mode with CONSULT-III.

3.

Check the lifting motor (front) operation.

Is the operation of relevant parts normal?

YES

>> INSPECTION END

NO

>> Perform diagnosis procedure. Refer to

ADP-112, "Diagnosis Procedure"

.

Diagnosis Procedure

INFOID:0000000005249758

1.

CHECK LIFTING MOTOR (FRONT) POWER SUPPLY

1.

Turn ignition switch OFF.

2.

Disconnect lifting motor (front) connector.

3.

Turn the ignition switch ON.

4.

Perform “Active test” (“SEAT LIFTER FR”) with CONSULT-III.

5.

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

Is the inspection result normal?

YES

>> Replace lifting motor (front). (Built in seat cushion frame.)

NO

>> GO TO 2.

2.

CHECK LIFTING MOTOR (FRONT) CIRCUIT

1.

Turn ignition switch OFF.

2.

Disconnect driver seat control unit connector.

3.

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

Test item

Description

SEAT LIFTER FR

OFF

Seat lifting (front)

Stop

UP

Upward

DWN

Downward

(+)

(-)

Condition

Voltage (V)

(Approx.)

Lifting motor (front)

Connector

Terminal

B455

37

Ground

SEAT LIFTER FR

OFF

0

UP

0

DWN (down)

Battery voltage

45

OFF

0

UP

Battery voltage

DWN (down)

0

LIFTING MOTOR (FRONT)

ADP-113

< DTC/CIRCUIT 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

>> Replace driver seat control unit. Refer to

ADP-215, "Removal and Installation"

.

NO

>> Repair or replace harness.

Driver seat control unit

Lifting motor (front)

Continuity

Connector

Terminal

Connector

Terminal

B452

37

B455

37

Existed

45

45

Driver seat control unit

Ground

Continuity

Connector

Terminal

B452

37

Not existed

45

ADP-114

< DTC/CIRCUIT DIAGNOSIS >

LIFTING MOTOR (REAR)

LIFTING MOTOR (REAR)

Description

INFOID:0000000005249759

• The lifting motor (rear) is installed to the seat cushion frame.
• The lifting motor (rear) is activated with the driver seat control unit.
• The seat lifter (rear) is moved upward/downward by changing the rotation direction of lifting motor (rear).

Component Function Check

INFOID:0000000005249760

1.

CHECK FUNCTION

1.

Turn ignition switch ON.

2.

Select “SEAT LIFTER RR” in “Active test” mode with CONSULT-III.

3.

Check the lifting motor (rear) operation.

Is the operation of relevant parts normal?

YES

>> INSPECTION END

NO

>> Perform diagnosis procedure. Refer to

ADP-114, "Diagnosis Procedure"

.

Diagnosis Procedure

INFOID:0000000005249761

1.

CHECK LIFTING MOTOR (REAR) POWER SUPPLY

1.

Turn ignition switch OFF.

2.

Disconnect lifting motor (rear) connector.

3.

Turn the ignition switch ON.

4.

Perform “Active test” (“SEAT LIFTER RR”) with CONSULT-III

5.

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

Is the inspection result normal?

YES

>> Replace lifting motor (rear). (Built in seat cushion frame.)

NO

>> GO TO 2.

2.

CHECK LIFTING MOTOR (REAR) CIRCUIT

1.

Turn ignition switch OFF.

2.

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

3.

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

Test item

Description

SEAT LIFTER RR

OFF

Seat lifting (rear)

Stop

UP

Upward

DWN

Downward

(+)

(-)

Condition

Voltage (V)

(Approx.)

Lifting motor (rear)

Connector

Terminal

B456

38

Ground

SEAT LIFTER RR

OFF

0

UP

Battery voltage

DWN (DOWN)

0

39

OFF

0

UP

0

DWN (DOWN)

Battery voltage

LIFTING MOTOR (REAR)

ADP-115

< DTC/CIRCUIT 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

>> Replace driver seat control unit. Refer to

ADP-215, "Removal and Installation"

.

NO

>> Repair or replace harness.

Driver seat control unit

Lifting motor (rear)

Continuity

Connector

Terminal

Connector

Terminal

B452

38

B456

38

Existed

39

39

Driver seat control unit

Ground

Continuity

Connector

Terminal

B452

38

Not existed

39