Infiniti M45 (Y34). Manual - part 759

 

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Infiniti M45 (Y34). Manual - part 759

 

 

AUTOMATIC DRIVE POSITIONER

SE-57

C

D

E

F

G

H

J

K

L

M

A

B

SE

3. 

CHECK HARNESS CONTINUITY

1.

Turn ignition switch OFF. 

2.

Disconnect driver seat control unit connector and reclining motor connector.

3.

Check continuity between driver seat control unit connector B142 terminals 2 (G), 9 (LG) and reclining
motor connector B147 terminals 2 (G), 9 (LG).

4.

Check continuity between driver seat control unit connector
B142 terminals 2 (G), 9 (LG) and body ground.

OK or NG

OK

>> GO TO 4.

NG

>> Repair or replace harness between driver seat control

unit and reclining motor.

4. 

CHECK DRIVER SEAT CONTROL UNIT OUTPUT SIGNAL

1.

Connect the driver seat control unit and reclining motor connector.

2.

Check voltage between driver seat control unit connector.

OK or NG

OK

>> Replace reclining motor.

NG

>> Replace driver seat control unit.

Front End Seat Lifting Motor Circuit Inspection

AIS001JY

1. 

CHECK FRONT END SEAT LIFTING MECHANISM

Check the following.

1.

Operation malfunction caused by lifter mechanism deformation or pinched harness or other foreign mate-
rials.

2.

Operation malfunction caused by foreign materials adhered to the lifter motor or lead screws.

3.

Operation malfunction and interference with other parts by installation.

OK or NG

OK

>> GO TO 2.

NG

>> Repair the malfunctioning part and check again.

2 (G) – 2 (G)

: Continuity should exist.

9 (LG) – 9 (LG)

: Continuity should exist.

2 (G) – Ground

: Continuity should not exist.

9 (LG) – Ground

: Continuity should not exist.

PIIA2923E

Connector

Terminals 

(Wire color)

Condition

Voltage (V) 

(Approx)

(+)

(–)

B142

2 (G)

9 (LG)

Reclining switch
(FR operation)

Battery voltage

Reclining switch OFF

0

9 (LG)

2 (G)

Reclining switch
(RR operation)

Battery voltage

Reclining switch OFF

0

PIIA2924E

SE-58

AUTOMATIC DRIVE POSITIONER

2. 

CHECK FUNCTION

With CONSULT-II

Check operation with “SEAT LIFTER FR” in ACTIVE TEST.

Without CONSULT-II

Carry out the self-diagnosis. Refer to 

SE-51, "ON BOARD DIAGNOSIS FOR AUTOMATIC DRIVE POSI-

TIONER"

 .

OK or NG

OK

>> System is OK.

NG

>> GO TO 3.

3. 

CHECK HARNESS CONTINUITY

1.

Turn ignition switch OFF.

2.

Disconnect driver seat control unit connector and front lifting motor connector.

3.

Check continuity between driver seat control unit connector B142 and terminals 10 (OR), 11 (P) and front
lifting motor connector B148 terminals 10 (OR), 11 (P).

4.

Check continuity between driver seat control unit connector
B142 and terminals 10 (OR), 11 (P) and body ground.

OK or NG

OK

>> GO TO 4.

NG

>> Repair or replace harness between driver seat control

unit and front lifting motor.

Test item

Description

SEAT
LIFTER FR

The front end lifter motor is activated by receiving the drive sig-
nal.

PIIA0271E

10 (OR) – 10 (OR)

: Continuity should exist.

11 (P) – 11 (P)

: Continuity should exist.

10 (OR) – Ground

: Continuity should not exist.

11 (P) – Ground

: Continuity should not exist.

PIIA2925E

AUTOMATIC DRIVE POSITIONER

SE-59

C

D

E

F

G

H

J

K

L

M

A

B

SE

4. 

CHECK DRIVER SEAT CONTROL UNIT OUTPUT SIGNAL

1.

Connect the driver seat control unit connector and front lifting motor connector.

2.

Check voltage between driver seat control unit connector.

OK or NG

OK

>> Replace front lifting motor.

NG

>> Replace driver seat control unit.

Rear End Seat Lifting Motor Circuit Inspection

AIS001JZ

1. 

CHECK REAR END SEAT LIFTING MECHANISM

Check following items.

1.

Operation malfunction caused by lifter mechanism deformation or pinched harness or other foreign mate-
rials.

2.

Operation malfunction caused by foreign materials adhered to the lifter motor or lead screws.

3.

Operation malfunction and interference with other parts by poor installation.

OK or NG

OK

>> GO TO 2.

NG

>> Repair the malfunctioning part and check again.

2. 

CHECK FUNCTION

With CONSULT-II

Check operation with “SEAT LIFTER RR” in ACTIVE TEST.

Without CONSULT-II

Carry out the self-diagnosis. Refer to 

SE-51, "ON BOARD DIAGNOSIS FOR AUTOMATIC DRIVE POSI-

TIONER"

 .

OK or NG

OK

>> System is OK.

NG

>> GO TO 3.

Connector

Terminals

 (Wire color)

Condition

Voltage (V) 

(Approx)

(+)

(–)

B142

10 (OR)

11 (P)

Front end lifting switch
(UP operation)

Battery voltage

Front end lifting switch OFF

0

11 (P)

10 (OR)

Front end lifting switch
(DOWN operation)

Battery voltage

Front end lifting switch OFF

0

PIIA2926E

Test item

Description

SEAT LIFTER

RR

The rear end lifter motor is activated by receiving the drive sig-
nal.

PIIA0274E

SE-60

AUTOMATIC DRIVE POSITIONER

3. 

CHECK HARNESS CONTINUITY

1.

Turn ignition switch OFF.

2.

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

3.

Check continuity between driver seat control unit connector B142 terminals 4 (Y), 6 (PU) and lifting motor
connector B149 terminals 4 (Y), 6 (PU).

4.

Check continuity between driver seat control unit  B142 termi-
nals 4 (Y), 6 (PU) and body ground.

OK or NG

OK

>> GO TO 4.

NG

>> Repair or replace harness between driver seat control

unit and rear lifting motor.

4. 

CHECK DRIVER SEAT CONTROL UNIT OUTPUT SIGNAL

1.

Connect the connectors B142 for the driver seat control unit and rear lifting motor.

2.

Check voltage between driver seat control unit connector.

OK or NG

OK

>> Replace rear lifting motor.

NG

>> Replace driver seat control unit.

Steering Wheel Telescopic Motor Circuit Inspection

AIS001K0

1. 

CHECK STEERING WHEEL TELESCOPIC MECHANISM

Check following.

1.

Operation malfunction caused by steering wheel telescopic mechanism deformation or pinched harness
or other foreign materials.

2.

Operation malfunction and interference with other parts by poor installation.

OK or NG

OK

>> GO TO 2.

NG

>> Repair the malfunctioning part and check again.

4 (Y) – 4 (Y)

: Continuity should exist.

6 (PU) – 6 (PU)

: Continuity should exist.

4 (Y) – Ground

: Continuity should not exist.

6 (PU) – Ground

: Continuity should not exist.

PIIA2927E

Connector

Terminals

 (Wire color)

Condition

Voltage (V) 

(Approx)

(+)

(–)

B142

6 (PU)

4 (Y)

Rear end lifting switch
(UP operation)

Battery voltage

Rear end lifting switch OFF

0

4 (Y)

6 (PU)

Rear end lifting switch
(DOWN operation)

Battery voltage

Rear end lifting switch OFF

0

PIIA2928E

 

 

 

 

 

 

 

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