Nissan Quest E52. Manual - part 990

PWC-72

< SYSTEM DESCRIPTION >

[DRIVER SIDE WINDOW ANTI-PINCH]

COMPONENT PARTS

Power Window Main Switch

INFOID:0000000009653347

• Directly controls all power window motor of all doors.
• Controls anti-pinch operation of power window.

Front Power Window Motor (Driver Side)

INFOID:0000000009653348

• Integrates the encoder and power window motor.
• Operates with signals from power window main switch.
• Transmits front power window motor (driver side) rotation as a pulse signal to power window main switch.

Sliding Door Power Window Switch

INFOID:0000000009653349

Controls power window motor of sliding door.

Sliding Door Power Window Motor

INFOID:0000000009653350

Operates with signals from power window main switch and sliding door power window switch.

5.

Sliding door power window switch LH

Refer to 

PWC-72, "Sliding Door Power Window Switch"

.

6.

Sliding door power window motor LH

Refer to 

PWC-72, "Sliding Door Power Window Motor"

.

No.

Component parts

Description

SYSTEM

PWC-73

< SYSTEM DESCRIPTION >

[DRIVER SIDE WINDOW ANTI-PINCH]

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SYSTEM

System Description

INFOID:0000000009653351

SYSTEM DIAGRAM

DESCRIPTION

• Power window system is activated by power window switch when ignition switch turns ON, or during the

retained power operation after ignition switch turns OFF.

• Power window main switch opens/closes all door glass.
• Front and sliding door power window switch opens/closes the corresponding door glass.
• AUTO UP/DOWN operation can be performed when power window main switch turns to AUTO.
• Power window lock switch can lock all power windows other than driver seat.
• If door glass receives resistance that is the specified value or more while power window of driver seat is in

AUTO-UP operation, power window of driver seat operates in the reverse direction.

Power Window AUTO-Operation

• AUTO UP/DOWN operation can be performed when power window main switch turns to AUTO.
• Encoder continues detecting the movement of power window motor and transmits to power window switch

as the encoder pulse signal while power window motor is operating.

• Power window switch reads the changes of encoder signal and stops AUTO operation when door glass is at

fully opened/closed position.

• Power window motor is operable in case encoder is malfunctioning.

Retained Power Operation

Retained power operation is an additional power supply function that enables power window system to oper-
ate for 45 seconds even when ignition switch is turned OFF.

Retained Power Cancel Conditions

• Front door CLOSE (door switch OFF) 

→

 OPEN (door switch ON).

• When ignition switch is ON again.
• When timer time passes (45 seconds).

Power Window Lock Function

Ground circuit inside power window main switch shuts off when power window lock switch is ON. This inhibits
each power window switch operation except the power window main switch.

JMKIA7862GB

PWC-74

< SYSTEM DESCRIPTION >

[DRIVER SIDE WINDOW ANTI-PINCH]

SYSTEM

Anti-Pinch System

• Pinch foreign material in the door glass during AUTO-UP operation, and it is the anti-pinch function that low-

ers the door glass 150 mm (5.9 in) when detected.

• Encoder continues detecting the movement of front power window motor (driver side) and transmits to

power window main switch as the encoder pulse signal while front power window motor (driver side) is oper-
ating.

• Resistance is applied to the front power window motor (driver side) rotation that changes the frequency of

encoder pulse signal if foreign material is trapped in the door glass.

• Power window main switch controls to lower the window glass for 150 mm (5.9 in) after it detects encoder

pulse signal frequency change.

Operation Condition
When front door glass (driver side) AUTO-UP operation is performed (anti-pinch function does not operate just
before the door glass closes and is fully closed).
NOTE:
Depending on environment and driving conditions, if a similar impact or load is applied to the door glass, it
may lower.

SYSTEM

PWC-75

< SYSTEM DESCRIPTION >

[DRIVER SIDE WINDOW ANTI-PINCH]

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Circuit Diagram

INFOID:0000000009653352

Fail-safe

INFOID:0000000009653353

FAIL-SAFE CONTROL

Switches to fail-safe control when malfunction is detected in encoder signal that detects up/down speed and
direction of door glass. Switches to fail-safe control when error beyond regulation value is detected between
the fully closed position and the actual position of the glass.

JMKIA7969GB