Infiniti QX56 (Z62). Manual - part 1030

PWC-32

< BASIC INSPECTION >

ADDITIONAL SERVICE WHEN REPLACING CONTROL UNIT

ADDITIONAL SERVICE WHEN REPLACING CONTROL UNIT

Description

INFOID:0000000006274849

When the control unit replaced, the initialization in necessary for normal operation of power window system.

CAUTION:

The following specified operations can not be performed under the non-initialized condition.
• Auto-up operation
• Anti-pinch function

Work Procedure

INFOID:0000000006217285

1.

SYSTEM INITIALIZATION

Perform system initialization. Refer to 

PWC-33, "Work Procedure"

.

>> GO TO 2.

2.

CHECK ANTI-PINCH FUNCTION

Check anti-pinch function. Refer to 

PWC-34, "Work Procedure"

.

>> END

SYSTEM INITIALIZATION

PWC-33

< BASIC INSPECTION >

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SYSTEM INITIALIZATION

Description

INFOID:0000000006274850

If any of the following operations are performed, the initialization is necessary for normal operation of power
window system.
• When control unit replaced.
• Electric power supply to power window switch or motor is interrupted by blown fuse or disconnection and

connection of the negative terminal of battery, etc.

• Removal and installation of regulator assembly.
• Power supply to the power window main switch or power window motor is cut off by the removal 

of battery terminal or if the battery fuse is blown.

• Disconnection and connection of power window main switch harness connector.
• Removal and installation of motor from regulator assembly.
• Operation of regulator assembly as an independent unit.
• Removal and installation of door glass.
• Removal and installation of door glass run.
The following specified operations can not be performed under the non-initialized condition.
• Auto-up operation
• Anti-pinch function

Work Procedure

INFOID:0000000006274851

1.

STEP 1

1.

Turn ignition switch ON.

2.

Operate power window switch to fully open the window. (This operation is unnecessary if the window is
already fully open)

3.

Continue pulling the power window switch UP (AUTO-UP operation). Even after glass stops at fully closed
position, keep pulling the switch for 2 seconds or more.

4.

Check that AUTO-UP function operates normally.

>> GO TO 2.

2.

STEP 2

Check anti-pinch function. Refer to 

PWC-34, "Work Procedure"

.

>> END

PWC-34

< BASIC INSPECTION >

CHECK ANTI-PINCH FUNCTION

CHECK ANTI-PINCH FUNCTION

Description

INFOID:0000000006274852

If any of the following operations are performed, the initialization is necessary for normal operation of anti-
pinch function.
• When control unit replaced.
• Electric power supply to power window switch or motor is interrupted by blown fuse or disconnection and

connection of the negative terminal of battery, etc.

• Removal and installation of regulator assembly.
• Power supply to the power window main switch or power window motor is cut off by the removal 

of battery terminal or if the battery fuse is blown.

• Disconnection and connection of power window main switch harness connector.
• Removal and installation of motor from regulator assembly.
• Operation of regulator assembly as an independent unit.
• Removal and installation of door glass.
• Removal and installation of door glass run.
The following specified operations can not be performed under the non-initialized condition.
• Auto-up operation
• Anti-pinch function

Work Procedure

INFOID:0000000006274853

1.

CHECK ANTI-PINCH FUNCTION

• Fully open the door window.
• Place a piece of wood near fully closed position.
• Close door glass completely with AUTO-UP.
• Check the following conditions
- Check that glass lowers for approximately 150 mm (5.9 in) without pinching piece of wood and stops.
- Check that glass does not rise not when operating the power window main switch while lowering.

CAUTION:

• Perform initial setting when AUTO-UP operation or anti-pinch function does not operate normally.
• Check that AUTO-UP operates before inspection when system initialization is performed.
• Do not check with hands and other body parts because they may be pinched. Do not get pinched.

>> END

POWER SUPPLY AND GROUND CIRCUIT

PWC-35

< DTC/CIRCUIT DIAGNOSIS >

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DTC/CIRCUIT DIAGNOSIS

POWER SUPPLY AND GROUND CIRCUIT

POWER WINDOW MAIN SWITCH

POWER WINDOW MAIN SWITCH : Diagnosis Procedure

INFOID:0000000006217290

1.

CHECK POWER SUPPLY

1.

Turn ignition switch OFF.

2.

Disconnect power window main switch connectors.

3.

Turn ignition switch ON.

4.

Check voltage between power window main switch harness connector and ground.

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> GO TO 2.

2.

CHECK POWER SUPPLY CIRCUIT

1.

Turn ignition switch OFF.

2.

Disconnect BCM connector.

3.

Check continuity between BCM harness connector and power window main switch harness connector.

4.

Check continuity between BCM harness connector and ground.

Is the inspection result normal?

YES

>> Replace BCM. Refer to

BCS-81, "Removal and Installation"

 .

NO

>> Repair or replace harness.

3.

CHECK GROUND CIRCUIT

1.

Turn ignition switch OFF.

2.

Check continuity between power window main switch harness connector and ground.

Is the inspection result normal?

YES

>> GO TO 4.

NO

>> Repair or replace harness.

4.

CHECK INTERMITTENT INCIDENT

(+)

(–)

Voltage (V)

(Approx.)

Power window main switch

Connector

Terminal 

D5

10

Ground

12

D6

19

BCM

Power window main switch

Continuity

Connector

Terminal

Connector

Terminal

M70

68

D5

10

Existed

69

D6

19

BCM 

Ground

Continuity

Connector

Terminal

M70

68

Not existed

69

Power window main switch 

Ground

Continuity 

Connector

Terminal

D6

17

Existed