Infiniti QX56 (JA60). Manual - part 24

LIFTING SENSOR (REAR)

ADP-87

< COMPONENT DIAGNOSIS >

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LIFTING SENSOR (REAR)

Description

INFOID:0000000005147535

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

• The pulse signal is input 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:0000000005147536

1.

 CHECK FUNCTION

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

2. Check lifting sensor (rear) signal under the following conditions.

Is the indication normal?

YES

>> Inspection End.

NO

>> Perform diagnosis procedure. Refer to 

ADP-87, "Diagnosis Procedure"

.

Diagnosis Procedure

INFOID:0000000005147537

Regarding Wiring Diagram information, refer to 

ADP-119, "Wiring Diagram"

.

1.

 CHECK LIFTING SENSOR (REAR) SIGNAL

1. Turn ignition switch OFF.

2. Read voltage signal between driver seat control unit harness

connector and ground with oscilloscope.

Is the inspection result normal?

YES

>> GO TO 4

NO

>> GO TO 2

2.

 CHECK LIFTING SENSOR (REAR) CIRCUIT

Monitor item

Condition

Value

LIFT RR PULSE

Seat lifting (rear)

Operate (up)

Change (increase)

Operate (down)

Change (decrease)

Release

No change

Terminals

Condition

Voltage signal

(+)

(–)

Driver 

seat con-

trol unit 

connector

Termi-

nal

B202

10

Ground

Seat 
lifting
(rear)

Oper-
ate

Other 
than 
above

0 or 5

PIIA4563E

SIIA0693J

ADP-88

< COMPONENT DIAGNOSIS >

LIFTING SENSOR (REAR)

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

2. Check the continuity between driver seat control unit harness

connector and lifting motor (rear) harness connector.

3. 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 SEAT OPERATION

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

2. Check the seat operation [except lifting (rear) operation] with memory function.
Is the operation normal?

YES

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

SE-69, "Disassembly

and Assembly"

.

NO

>> Replace driver seat control unit. Refer to 

ADP-174, "Removal and Installation"

.

4.

 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

B202 (A)

10

B207 (B)

4

Yes

16

3

31

2

Driver seat control unit

 connector

Terminal

Ground

Continuity 

B202 (A)

10

No

16

31

ALJIA0320ZZ

TILT SENSOR

ADP-89

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TILT SENSOR

Description

INFOID:0000000005147538

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

• The resistance of tilt sensor is changed according to the up/down position of steering column.

• The terminal voltage of automatic drive positioner control unit will be changed according to a change of tilt

sensor resistance. Automatic drive positioner control unit calculates the tilt position from the voltage.

Component Function Check

INFOID:0000000005147539

1.

 CHECK FUNCTION

1. Select “TILT SEN” in “Data monitor” mode with CONSULT-III.

2. Check the tilt sensor signal under the following condition.

Is the indication normal?

YES

>> Inspection End.

NO

>> Perform diagnosis procedure. Refer to 

ADP-89, "Diagnosis Procedure"

.

Diagnosis Procedure

INFOID:0000000005147540

Regarding Wiring Diagram information, refer to 

ADP-138, "Wiring Diagram"

.

1.

 CHECK TILT SENSOR SIGNAL

1. Turn ignition switch OFF.

2. Check voltage between automatic drive positioner connector

and ground.

Is the inspection result normal?

YES

>> GO TO 4

NO

>> GO TO 2

2.

 CHECK HARNESS CONTINUITY

Monitor item

Condition

Value

TILT SEN

Tilt position

Change between

1.2 V (Close to top)

3.4 V (Close to bottom)

Connector

Terminals

Condition

Voltage (V) 

(Approx.)

(+)

(-)

M33

7

Ground

Tilt top position

2

Tilt bottom position

4

LIIA0485E

ADP-90

< COMPONENT DIAGNOSIS >

TILT SENSOR

1. Disconnect automatic drive positioner control unit and tilt motor

assembly. 

2. Check continuity between automatic drive positioner connector

M33 (A), M34 (B) terminals 7, 33, 41 and tilt motor assembly

connector M85 (C) terminals 2, 3, 4.

3. Check continuity between automatic drive positioner control unit

connectors M33 (A), M34 (B) terminals 7, 33, 41 and ground.

Is the inspection result normal?

YES

>> Replace tilt motor assembly. Refer to 

ST-19, "Removal

and Installation"

.

NO

>> Repair or replace harness.

3.

 CHECK DOOR MIRROR OPERATION

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

2. Turn ignition switch ON.

3. Check door mirror operation with memory function.
Is the operation normal?

YES

>> Replace tilt motor assembly. Refer to 

ST-19, "Removal and Installation"

.

NO

>> Replace automatic drive positioner control unit. Refer to 

ADP-175, "Removal and Installation"

.

4.

 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.

7 - 3

: Continuity should exist.

33 - 2

: Continuity should exist.

41 - 4

: Continuity should exist.

7 - Ground

: Continuity should not exist.

33 - Ground

: Continuity should not exist.

41 - Ground

: Continuity should not exist.

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