Infiniti QX56 (JA60). Manual - part 28

LIFTING MOTOR (REAR)

ADP-103

< COMPONENT DIAGNOSIS >

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LIFTING MOTOR (REAR)

Description

INFOID:0000000005147559

• The lifting motor (rear) is installed to the power seat frame assembly.

• 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

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1.

 CHECK FUNCTION

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

2. Check the lifting motor (rear) operation.

Is the operation of relevant parts normal?

YES

>> Inspection End.

NO

>> Perform diagnosis procedure. Refer to 

ADP-103, "Diagnosis Procedure"

.

Diagnosis Procedure

INFOID:0000000005147561

Regarding Wiring Diagram information, refer to 

ADP-119, "Wiring Diagram"

.

1.

 CHECK LIFTING MOTOR (REAR) POWER SUPPLY

1. Turn the ignition switch OFF.

2. Perform “Active test” (“SEAT LIFTER RR”) with CONSULT-lll

3. Check voltage between driver seat control unit harness connec-

tor and ground.

Is the inspection result normal?

YES

>> Replace lifting motor (rear). (Built in power seat frame assembly). Refer to 

SE-69, "Disassembly

and Assembly"

.

NO

>> GO TO 2

2.

 CHECK LIFTING MOTOR (REAR) CIRCUIT

Test Item

Description

SEAT LIFTER RR

OFF

Seat lifting (rear)

Stop

UP

Upward

DWN

Downward

Terminal

Test Item

Voltage (V)

(Approx.)

(+)

(-)

Driver seat 
control unit 

connector

Terminal

B203

38

Ground

SEAT 
LIFTER 
RR

OFF

0

UP

Battery voltage

DWN (down)

0

39

OFF

0

UP

0

DWN (down) Battery voltage

PIIA4804E

ADP-104

< COMPONENT DIAGNOSIS >

LIFTING MOTOR (REAR)

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

2. Check continuity between driver seat control unit harness con-

nector and lifting motor (rear) harness connector.

3. Check continuity between driver seat control unit harness con-

nector and ground.

Is the inspection result normal?

YES

>> GO TO 3

NO

>> Repair or replace harness.

3.

 CHECK INTERMITTENT INCIDENT

Refer to 

GI-38, "Intermittent Incident"

.

Is the inspection result normal?

YES

>> Replace driver seat control unit. Refer to 

ADP-174, "Removal and Installation"

.

NO

>> Repair or replace the malfunctioning part.

Driver seat control 

unit connector

Terminal

Lifting motor (rear) 

connector

Terminal

Continuity

B203 (A)

38

B207 (B)

5

Yes

39

1

Driver seat control unit 

connector

Terminal

Ground

Continuity 

B203 (A)

38

No

39

ALJIA0324ZZ

TILT MOTOR

ADP-105

< COMPONENT DIAGNOSIS >

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TILT MOTOR

Description

INFOID:0000000005147562

• The tilt motor is installed to the steering column assembly. 

• The tilt motor is activated with the automatic drive positioner control unit.

• The steering column is tilted upward/downward by changing the rotation direction of tilt motor.

Component Function Check

INFOID:0000000005147563

1.

 CHECK FUNCTION

1. Select “TILT MOTOR” in “Active test” mode with CONSULT-III.

2. Check the tilt motor operation.

Is the operation of relevant parts normal? 

YES

>> Inspection End.

NO

>> Perform diagnosis procedure. Refer to 

ADP-105, "Diagnosis Procedure"

.

Diagnosis Procedure

INFOID:0000000005147564

Regarding Wiring Diagram information, refer to 

ADP-138, "Wiring Diagram"

.

1.

 CHECK TILT MOTOR HARNESS CONTINUITY

1. Turn ignition switch OFF.

2. Disconnect automatic drive positioner control unit and tilt motor

assembly.

3. Check continuity between automatic drive positioner control unit

connector M34 (A) terminals 35, 42 and tilt motor assembly con-

nector M86 (B) terminals 1, 5.

4. Check continuity between automatic drive positioner control unit

connector M34 (A) terminals 35, 42 and ground.

Is the inspection result normal?

YES

>> GO TO 2

NO

>> Repair or replace harness.

2.

 CHECK AUTOMATIC DRIVE POSITIONER CONTROL UNIT OUTPUT SIGNAL

Test item

Description

TILT MOTOR

OFF

Steering tilt

Stop

UP

Upward

DWN

Downward

35 - 1

: Continuity should exist.

42 - 5

: Continuity should exist.

35 - Ground

: Continuity should not exist.

42 - Ground

: Continuity should not exist.

ALJIA0293ZZ

ADP-106

< COMPONENT DIAGNOSIS >

TILT MOTOR

1. Connect the automatic drive positioner control unit and tilt motor

assembly.

2. Check voltage between automatic drive positioner control unit

connector and ground.

Is the inspection result normal?

YES

>> Replace tilt motor assembly. Refer to 

ST-19, "Removal and Installation"

.

NO

>> GO TO 3

3.

 CHECK INTERMITTENT INCIDENT

Refer to 

GI-38, "Intermittent Incident"

.

Is the inspection result normal?

YES

>> Replace automatic drive positioner control unit. Refer to 

ADP-175, "Removal and Installation"

.

NO

>> Repair or replace the malfunctioning part.

Connector

Terminals

Condition

Voltage (V) 

(Approx.)

(+)

(-)

M34

35

Ground

ADP steering switch ON
(UP operation)

Battery voltage

Other than above

 0

42

ADP steering switch ON
(DOWN operation)

Battery voltage

Other than above

0

LIIA0482E