Infiniti M45 (Y34). Manual - part 582

 

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Infiniti M45 (Y34). Manual - part 582

 

 

POWER WINDOW SYSTEM

GW-39

C

D

E

F

G

H

J

K

L

M

A

B

GW

3. 

CHECK HARNESS CONTINUITY

1.

Disconnect passenger door control unit connector.

2.

Check continuity between passenger door control unit connector D38 terminal 1 and front power window
regulator (passenger side) connector D37 terminal 4.

3.

Check continuity between passenger door control unit connector
D38 terminal 1 and ground.

OK or NG

OK

>> GO TO 4.

NG

>> Repair or replace harness between passenger door

control unit and front power window regulator (passen-
ger side).

4. 

CHECK PASSENGER DOOR CONTROL UNIT OUTPUT SIGNAL

1.

Connect passenger door control unit connector.

2.

Turn ignition switch ON.

3.

Check voltage between passenger door control unit connector D38 terminal 1 and ground.

OK or NG

OK

>> Replace front power window regulator (passenger side).

NG

>> Replace passenger door control unit.

Encoder Switch Check (Driver Side)

AIS001N5

1. 

CHECK FRONT POWER WINDOW REGULATOR (DRIVER SIDE) POWER SUPPLY

1.

Turn ignition switch ON.

2.

Check voltage between driver door control unit (LCU01) connector D8 terminal 4 and ground.

OK or NG

OK

>> GO TO 2.

NG

>> Replace driver door control unit (LCU01).

1 (PU) – 4 (PU)

: Continuity should exist.

1 (PU) – Ground

: Continuity should not exist.

PIIB0549E

1 (PU) – Ground

: Approx. 5V

PIIA2689E

4 (W) – Ground

: Approx. 10V

PIIA2694E

GW-40

POWER WINDOW SYSTEM

2. 

CHECK HARNESS CONTINUITY

1.

Turn ignition switch OFF.

2.

Disconnect driver door control unit (LCU01) and front power window regulator (driver side) connector.

3.

Check continuity between driver door control unit (LCU01) connector D8 terminal 4 and front power win-
dow regulator (driver side) connector D7 terminal 5.

OK or NG

OK

>> GO TO 3.

NG

>> Repair or replace harness between driver door control

unit (LCU01) and front power window regulator (driver
side).

3. 

CHECK ENCODER GROUND 

Check continuity between front power window regulator (driver side) connector D7 terminal 3 and ground.

OK or NG

OK

>> GO TO 4.

NG

>> Repair or replace harness.

4. 

CHECK ENCODER SIGNAL

1.

Connect driver door control unit (LCU01) and front power window regulator (driver side) connector.

2.

Turn ignition switch ON.

3.

Check the signal between driver door control unit (LCU01) connector and ground with oscilloscope.

OK or NG

OK

>> Encoder switch circuit is OK.

NG

>> GO TO 5.

4 (W) – 5 (W)

: Continuity should exist.

PIIA2695E

3 (B) – Ground

: Continuity should exist.

PIIA2687E

Connector

Terminals (Wire color)

Condition

Signal

(+)

(–)

1 (G)

Ground

Opening

D8

PIIA2696E

OCC3383D

POWER WINDOW SYSTEM

GW-41

C

D

E

F

G

H

J

K

L

M

A

B

GW

5. 

CHECK ENCODER CIRCUIT

1.

Turn ignition switch OFF.

2.

Disconnect driver door control unit (LCU01) and front power window regulator (driver side) connector.

3.

Check continuity between driver door control unit (LCU01) connector D8 terminal 1 and front power win-
dow regulator (driver side) connector D7 terminal 6.

4.

Check continuity between driver door control unit (LCU01) con-
nector D8 terminal 1 and ground.

OK or NG

OK

>> Replace front power window regulator (driver side)

NG

>> Repair or replace harness between driver door control

unit (LCU01) and front power window regulator (driver
side).

Encoder Switch Check (Passenger Side)

AIS001N6

1. 

CHECK FRONT POWER WINDOW REGULATOR (PASSENGER SIDE) POWER SUPPLY

1.

Turn ignition switch ON.

2.

Check voltage between passenger door control unit connector D38 terminal 4 and ground.

OK or NG

OK

>> GO TO 2.

NG

>> Replace passenger door control unit.

2. 

CHECK HARNESS CONTINUITY

1.

Turn ignition switch OFF.

2.

Disconnect passenger door control unit and front power window regulator (passenger side) connector.

3.

Check continuity between driver door control unit (LCU01) connector D38 terminal 4 and front power win-
dow regulator (passenger side) connector D37 terminal 5.

OK or NG

OK

>> GO TO 3.

NG

>> Repair or replace harness between passenger door

control unit and front power window regulator (passen-
ger side).

1 (G) – 6 (G)

: Continuity should exist.

1 (G) – Ground

: Continuity should not exist.

PIIB0550E

4 (W) – Ground

: Approx. 10V

PIIA2700E

4 (W) – 5 (W)

: Continuity should exist.

PIIA2701E

GW-42

POWER WINDOW SYSTEM

3. 

CHECK ENCODER GROUND 

Check continuity between front power window regulator (passenger side) connector D37 terminal 3 and
ground.

OK or NG

OK

>> GO TO 4.

NG

>> Repair or replace harness.

4. 

CHECK ENCODER SIGNAL

1.

Connect passenger door control unit and front power window regulator (passenger side) connector.

2.

Turn ignition switch ON.

3.

Check the signal between passenger door control unit connector and ground with oscilloscope.

OK or NG

OK

>> Encoder switch circuit is OK.

NG

>> GO TO 5.

5. 

CHECK ENCODER CIRCUIT

1.

Turn ignition switch OFF.

2.

Disconnect passenger door control unit and front power window regulator (passenger side) connector.

3.

Check continuity between passenger door control unit connector D38 terminal 12 and front power window
regulator (passenger side) connector D37 terminal 6.

4.

Check continuity between passenger door control unit connector
D38 terminal 12 and ground.

OK or NG

OK

>> Replace front power window regulator (passenger side)

NG

>> Repair or replace harness between passenger door

control unit and front power window regulator (passen-
ger side).

3 (B) – Ground

: Continuity should exist.

PIIA2702E

Connector

Terminals (Wire color)

Condition

Signal

(+)

(–)

D38

12 (G)

Ground

Opening

PIIA2698E

OCC3383D

12 (G) – 6 (G)

: Continuity should exist.

12 (G) – Ground

: Continuity should not exist.

PIIB0551E

 

 

 

 

 

 

 

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