Infiniti Q45. Manual - part 611

POWER WINDOW SYSTEM

GW-37

C

D

E

F

G

H

J

K

L

M

A

B

GW

3. 

CHECK ENCODER GROUND

1.

Turn ignition switch OFF.

2.

Disconnect front power window motor (driver side) connector.

3.

Check continuity between front power window motor (driver
side) connector D7 terminal 6 and ground.

OK or NG

OK

>> GO TO 4.

NG

>> Repair or replace harness.

4. 

CHECK ENCODER SIGNAL 

1.

Connect front power window motor (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 function is OK.

NG

>> GO TO 5

5. 

CHECK ENCODER CIRCUIT

1.

Turn ignition switch OFF.

2.

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

3.

Check continuity between driver door control unit (LCU01) con-
nector D8 terminal 1 and front power window motor (driver side)
connector D7 terminal 3. 

OK or NG

OK

>> Replace front power window motor (driver side).

NG

>> Repair or replace harness.

6 (B) – Ground

:Continuity should exist.

PIIB0159E

Connector

Terminals

(Wire color)

Condition

Signal

(Reference value)

(+)

(-)

D8

1 (G)

Ground

Down

PIIA2997E

OCC3383D

1 (G) – 3 (G)

:Continuity should exist.

PIIB0160E

GW-38

POWER WINDOW SYSTEM

Check Encoder Circuit (Passenger Side)

NIS000Z0

1. 

CHECK FRONT POWER WINDOW MOTOR (PASSENGER SIDE) CIRCUIT

1.

Turn ignition switch ON.

2.

Check voltage between front power window motor (passenger side) connector D37 terminal 4 and
ground.

OK or NG

OK

>> GO TO 3

NG

>> GO TO 2

2. 

CHECK HARNESS CONTINUITY 

1.

Turn ignition switch OFF.

2.

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

3.

Check continuity between passenger door control unit connector
D38 terminal 15 and front power window motor (passenger side)
connector D37 terminal 4.

OK or NG

OK

>> Replace passenger door control unit.

NG 

>> Repair or replace harness.

3. 

CHECK ENCODER GROUND

1.

Turn ignition switch OFF.

2.

Disconnect front power window motor (passenger side) connector.

3.

Check continuity between front power window motor (passenger
side) connector D37 terminal 6 and ground.

OK or NG

OK

>> GO TO 4.

NG

>> Repair or replace harness.

4 (W) – Ground

:Approx. 10V

PIIB0161E

15 (W) – 4 (W)

:Continuity should exist.

PIIB0162E

6 (B) – Ground

:Continuity should exist.

PIIB0163E

POWER WINDOW SYSTEM

GW-39

C

D

E

F

G

H

J

K

L

M

A

B

GW

4. 

CHECK ENCODER SIGNAL 

1.

Connect front power window motor (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 function 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 motor (passenger side) connector.

3.

Check continuity between passenger door control unit connector
D38 terminal 19 and front power window motor (passenger side)
connector D37 terminal 3. 

OK or NG

OK

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

NG

>> Repair or replace harness.

Check Encoder Circuit (Rear LH or RH)

NIS000Z1

1. 

CHECK REAR POWER WINDOW MOTOR CIRCUIT

1.

Turn ignition switch OFF.

2.

Disconnect rear power window motor LH or RH connector.

3.

Turn ignition switch ON.

4.

Check voltage between rear power window motor LH or RH con-
nector D57(LH) or D77(RH) terminal 6 and ground.

OK or NG

OK

>> GO TO 3.

NG

>> GO TO 2.

Terminals

Terminal

(Wire color)

Condition

Signal

(Reference value)

(+)

(-)

D38

19 (G)

Ground

Down

PIIA3002E

OCC3383D

19 (G) – 3 (G)

:Continuity should exist.

PIIB0164E

6 (W) – Ground

:Approx. 10V

PIIB0167E

GW-40

POWER WINDOW SYSTEM

2. 

CHECK HARNESS CONTINUITY 

1.

Turn ignition switch OFF.

2.

Disconnect rear door control unit LH or RH and rear power window motor LH or RH connector.

3.

Check continuity between rear door control unit LH or RH con-
nector D58(LH) or D78(RH) terminal 15 and rear power window
motor LH or RH connector D57(LH) or D77(RH) terminal 6.

OK or NG

OK

>> Replace rear door control unit LH or RH.

NG 

>> Repair or replace harness.

3. 

CHECK ENCODER GROUND

1.

Turn ignition switch OFF.

2.

Disconnect rear power window motor LH or RH connector.

3.

Check continuity between rear power window motor LH or RH
connector D57(LH) or D77(RH) terminal 4 and ground.

OK or NG

OK

>> GO TO 4.

NG

>> Repair or replace harness.

4. 

CHECK ENCODER SIGNAL 

1.

Connect rear power window motor LH or RH connector.

2.

Turn ignition switch ON.

3.

Check the signal between rear door control unit LH or RH connector and ground with oscilloscope.

OK or NG

OK

>> Encoder function is OK.

NG

>> GO TO 5.

15 (W) – 6 (W)

:Continuity should exist.

PIIB0168E

4 (B) – Ground

:Continuity should exist.

PIIB0169E

Connector

Terminals (Wire color)

Condition

Signal

(Reference value)

(+)

(–)

D58 (LH)

D78 (RH)

19 (G)

Ground

Down

PIIA3007E

OCC3383D