Infiniti M35/M45 Y50. Manual - part 1065

AUTOMATIC DRIVE POSITIONER

SE-57

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Check Front Lifting Sensor Circuit 

NIS0026F

1. 

CHECK FUNCTION

 With CONSULT-II

Check operation with “LIFT FR PULSE” on the DATA MONITOR to make sure the pulse changes.

 Without CONSULT-II

1.

Turn ignition switch OFF.

2.

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

OK or NG

OK

>> Sliding sensor front lifting sensor is OK.

NG

>> GO TO 2.

Monitor item [OPERATION or UNIT]

Contents

LIFT FR PULSE

—

The front lifting position (pulse) judged 
from the lifting sensor (front) is dis-
played

PIIA4558E

Sliding 
sensor 

front lifting 

sensor

Terminals

Condition

Signal

(Reference value)

(+)

(–)

B214

25

Ground

Front
lifting 
motor  
operation

PIIB6153E

PIIA3278E

SE-58

AUTOMATIC DRIVE POSITIONER

2. 

CHECK FRONT LIFTING MOTOR SENSOR CIRCUIT HARNESS CONTINUITY

1.

Disconnect driver seat control unit and sliding sensor front lifting sensor connector.

2.

Check continuity between driver seat control unit connector and sliding sensor front lifting sensor connec-
tor.

3.

Check continuity between driver seat control unit connector and
ground.

OK or NG

OK

>> GO TO 3.

NG

>> Repair or replace harness.

3. 

CHECK DRIVER SEAT CONTROL UNIT OUTPUT

1.

Connect driver seat control unit connector.

2.

Check voltage between driver seat control unit connector and ground.

OK or NG

OK

>> Replace sliding sensor front lifting sensor.

NG

>> Replace automatic drive positioner control unit.

A

B

Continuity 

Driver seat control 

unit connector

Terminal

Sliding sensor ·  

front lifting sensor 

connector

Terminal

B204

25

B214

25

Yes

31

31B

A

Ground

Continuity 

Driver seat control unit 

connector

Terminal

B204

25

No

31

PIIB6154E

Terminals

Voltage (V)

(Approx.)

(+)

(–)

Driver seat control 

unit connector

Terminal

B204

25

Ground

5

PIIB6155E

AUTOMATIC DRIVE POSITIONER

SE-59

C

D

E

F

G

H

J

K

L

M

A

B

SE

Check Rear Lifting Sensor Circuit 

NIS0026G

1. 

CHECK FUNCTION

 With CONSULT-II

Check operation with “LIFT RR PULSE” on the DATA MONITOR to make sure pulse changes.

 Without CONSULT-II

1.

Turn ignition switch OFF.

2.

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

OK or NG

OK

>> Rear lifting sensor circuit is OK.

NG

>> GO TO 2.

Monitor item [OPERATION or UNIT]

LIFT RR PULSE

—

The rear lifting position (pulse) judged from 
the lifting sensor (rear) is displayed.

PIIA4558E

Driver seat 
control unit 

connector

Terminals 

Condition

Signal

(Reference value)

(+)

(–)

B204

10

Ground

Rear
lifting 
motor 
operation

PIIB6156E

PIIA3278E

SE-60

AUTOMATIC DRIVE POSITIONER

2. 

CHECK REAR LIFTING MOTOR SENSOR CIRCUIT HARNESS CONTINUITY

1.

Disconnect driver seat control unit and rear lifting sensor connector.

2.

Check continuity between driver seat control unit connector and
rear lifting sensor connector.

3.

Check continuity between driver seat control unit connector and
ground.

OK or NG

OK

>> GO TO 3.

NG

>> Repair or replace harness.

3. 

CHECK DRIVER SEAT CONTROL UNIT OUTPUT

1.

Connect driver seat control unit connector.

2.

Check voltage between driver seat control unit connector and ground.

OK or NG

OK

>> Replace rear lifting sensor.

NG

>> Replace automatic drive positioner control unit.

A

B

Continuity 

Driver seat control 

unit connector

Terminal

Rear lifting sensor 

connector

Terminal

B204

10

B218

10

Yes

31

31

A

Ground

Continuity 

Driver seat control unit 

connector

Terminal

B204

10

No

31

PIIB6157E

Terminals

Voltage (V)

(Approx.)

(+)

(–)

Driver seat 

control unit 

connector

Terminal

B204

10

Ground

5

PIIB6158E