Nissan Maxima. Manual - part 22

ADP-80

< DTC/CIRCUIT DIAGNOSIS >

LIFTING SENSOR (FRONT)

LIFTING SENSOR (FRONT)

Description

INFOID:0000000010051779

• The lifting sensor (front) is installed to the seat frame.

• The pulse signal is input to the driver seat control unit when the 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:0000000010051780

1.

CHECK FUNCTION

1. Select “LIFT FR PULSE” in “DATA MONITOR” mode with CONSULT.

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

Is the indication normal?

YES

>> Inspection End.

NO

>> Perform diagnosis procedure. Refer to 

ADP-80, "Diagnosis Procedure"

.

Diagnosis Procedure

INFOID:0000000010051781

Regarding Wiring Diagram information, refer to 

ADP-150, "Wiring Diagram"

.

1.

 CHECK LIFTING SENSOR (FRONT) SIGNAL

1. Turn ignition switch ON.

2. Read the voltage signal between driver seat control unit harness connector and ground with an oscillo-

scope.

Is the inspection result normal?

YES

>> Replace driver seat control unit. Refer to 

ADP-169, "Removal and Installation"

.

NO

>> GO TO 2

2.

 CHECK LIFTING SENSOR (FRONT) CIRCUIT

1. Turn ignition switch OFF.

2. Disconnect driver seat control unit and front power seat LH [lifting motor (front)].

Monitor item

Condition

Value

LIFT FR PULSE

Seat lifting (front)

Operate (up)

Change (decrease)

Operate (down)

Change (increase)

Release

No change

Terminals

Condition

Voltage signal

(+)

(–)

Driver seat con-
trol unit connec-

tor

Terminal

B203

30

Ground

Seat lifting
(front)

Operate

Other than 
above

0 or 5

JMJIA0119ZZ

LIFTING SENSOR (FRONT)

ADP-81

< DTC/CIRCUIT DIAGNOSIS >

C

D

E

F

G

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B

ADP

N

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3. Check continuity between driver seat control unit harness connector and front power seat LH [lifting motor

(front)] harness connector.

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 LIFTING SENSOR (FRONT) POWER SUPPLY

1. Connect driver seat control unit.

2. Turn ignition switch ON.

3. Check voltage between front power seat LH [lifting motor (front)] harness connector and ground.

Is the inspection result normal?

YES

>> GO TO 5

NO

>> GO TO 4

4.

 CHECK LIFTING SENSOR (FRONT) POWER SUPPLY CIRCUIT 

1. Turn ignition switch OFF.

2. Disconnect driver seat control unit.

3. Check continuity between driver seat control unit harness connector and front power seat LH [lifting motor

(front)] harness connector.

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-169, "Removal and Installation"

.

NO

>> Repair or replace harness.

5.

 CHECK LIFTING SENSOR (FRONT) GROUND 

Driver seat control unit

Front power seat LH [lifting motor (front)]

Continuity

Connector

Terminal

Connector

Terminal

B203

30

B206

10

Yes

Driver seat control unit

Ground

Continuity 

Connector

Terminal

B203

30

No

(+)

(–)

Voltage (V)

(Approx.)

Front power seat LH [lifting motor (front)}

Connector

Terminals

B206

9

Ground

Battery voltage

Driver seat control unit

Front power seat LH [lifting motor (front)]

Continuity

Connector

Terminal

Connector

Terminal

B203

5

B206

9

Yes

Driver seat control unit

Ground

Continuity 

Connector

Terminal

B203

5

No

ADP-82

< DTC/CIRCUIT DIAGNOSIS >

LIFTING SENSOR (FRONT)

1. Turn ignition switch OFF.

2. Check continuity between front power seat LH [lifting motor

(front)] harness connector and ground.

Is the inspection result normal?

YES

>> Replace front power seat LH [lifting motor (front)]. Refer

to 

SE-68, "Removal and Installation"

.

NO

>> Repair or replace harness.

Front power seat LH [lifting motor 

(front)]

Ground

Continuity

Connector

Terminal

B206

15

Yes

ALJIA0417ZZ

LIFTING SENSOR (REAR)

ADP-83

< DTC/CIRCUIT DIAGNOSIS >

C

D

E

F

G

H

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K

L

M

A

B

ADP

N

O

P

LIFTING SENSOR (REAR)

Description

INFOID:0000000010051782

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

• 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:0000000010051783

1.

 CHECK FUNCTION

1. Select “LIFT RR PULSE” in “DATA MONITOR" mode with CONSULT.

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

Is the indication normal?

YES

>> Inspection End.

NO

>> Perform diagnosis procedure. Refer to 

ADP-83, "Diagnosis Procedure"

.

Diagnosis Procedure

INFOID:0000000010051784

Regarding Wiring Diagram information, refer to 

ADP-150, "Wiring Diagram"

.

1.

 CHECK LIFTING SENSOR (REAR) 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

>> Replace driver seat control unit. Refer to 

ADP-169, "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 front power seat LH [lifting motor (rear)].

3. Check the continuity between driver seat control unit harness connector and front power seat LH [lifting

motor (rear)] harness connector.

Monitor item

Condition

Value

LIFT RR PULSE

Seat lifting (rear)

Operate (up)

Change (decrease)

Operate (down)

Change (increase)

Release

No change

Terminals

Condition

Voltage signal

(+)

(–)

Driver seat con-

trol unit connector

Terminal

B203

29

Ground

Seat lifting
(rear)

Operate

Other than 
above

0 or 5

JMJIA0119ZZ