Nissan Leaf. Manual - part 1022

PWC-6

< SYSTEM DESCRIPTION >

COMPONENT PARTS

SYSTEM DESCRIPTION

COMPONENT PARTS

Component Parts Location

INFOID:0000000010119925

ALKIA3515ZZ

A.

Front door finisher LH

B.

View with front door finisher removed

C. Rear door finisher LH

B.

View with rear door finisher removed

COMPONENT PARTS

PWC-7

< SYSTEM DESCRIPTION >

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Power Window Main Switch

INFOID:0000000010119926

• Main power window and door lock/unlock switch controls all power

windows.

• Main power window and door lock/unlock switch integrates UP/

DOWN switch, power window lock switch, and door lock/unlock

switch.

• Main power window and door lock/unlock switch controls power

window lock function, AUTO UP/DOWN function, and anti-pinch

function.

Power Window Switch

INFOID:0000000010119927

• Each power window switch transmits UP/DOWN signal to each

motor.

• Each power window switch transmits UP/DOWN signal from main

power window and door lock/unlock switch to each motor.

Power Window Motor

INFOID:0000000010119928

• Integrates the encoder and front power window motor LH.

• Starts operation according to signals from main power window and

door lock/unlock switch.

• Transmits front power window motor LH rotation as a pulse signal

to main power window and door lock/unlock switch.

• Excepting power window motor for driver door, starts operation

according to signals from main power window and door lock/unlock

switch or each power window switches.

No.

Component parts

Function

1.

BCM

• Supplies power supply to power window switches
• Controls retained power
• Refer  to 

BCS-5, "BODY CONTROL SYSTEM : Component Parts Lo-

cation"

 for detailed installation 

location.

2.

Front door switch LH

• Inputs door open/close condition to BCM
• Refer  to 

DLK-15, "Component Parts Location"

 for detailed installation 

location.

3.

Main power window and door lock/unlock switch

Refer to 

PWC-7, "Power Window Main Switch"

.

4.

Front power window motor LH

Refer to 

PWC-7, "Power Window Motor"

.

5.

Rear power window switch LH

Refer to 

PWC-7, "Power Window Switch"

.

6.

Rear power window motor LH

Refer to 

PWC-7, "Power Window Motor"

.

JMKIA6523ZZ

JMKIA6524ZZ

JMKIA6528ZZ

PWC-8

< SYSTEM DESCRIPTION >

SYSTEM

SYSTEM

System Description

INFOID:0000000010119929

SYSTEM DIAGRAM

POWER WINDOW OPERATION

• Main power window and door lock/unlock switch can open/close all windows.

• Front and rear power window switches can open/close the corresponding windows.

POWER WINDOW AUTO-OPERATION (FRONT DRIVER SIDE)

• AUTO UP/DOWN operation can be performed when main power window and door lock/unlock switch turns

to AUTO.

• Encoder continues detecting the movement of power window motor and transmits to main power window

and door lock/unlock switch as the encoder pulse signal while power window motor is operating.

• Main power window and door lock/unlock switch reads the changes of encoder signal and stops AUTO oper-

ation when door glass is at fully opened/closed position.

• Front power window motor LH 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 power switch is turned OFF.

RETAINED POWER CANCEL CONDITIONS

• Front door CLOSE (door switch OFF) 

→ OPEN (door switch ON).

• When power switch is ON again.

• When timer time passes (45 seconds).

POWER WINDOW LOCK

Ground circuit inside main power window and door lock/unlock switch shuts off when power window lock

switch is ON. This inhibits power window switch operation except with the main power window and door lock/

unlock switch.

ANTI-PINCH SYSTEM (FRONT DRIVER SIDE)

• 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.

ALKIA3517GB

SYSTEM

PWC-9

< SYSTEM DESCRIPTION >

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• Encoder continues detecting the movement of front power window motor LH and transmits to main power

window and door lock/unlock switch as the encoder pulse signal while front power window motor LH is oper-

ating.

• Resistance is applied to the front power window motor LH rotation that changes the frequency of encoder

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

• Main power window and door lock/unlock 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 LH 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.

Fail Safe

INFOID:0000000010119930

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.

It changes to condition before initialization and the following functions do not operate when switched to fail-

safe control.

• Auto-up operation

• Anti-pinch function

• Retained power function

Perform initial operation to recover when switched to fail-safe mode. However, it switches back to fail-safe

control when malfunction is found in power window switch or in the motor.

Error

Error condition

Pulse sensor malfunction

When only one side of pulse signal is being detected for more than the specified value.

Both pulse sensors mal-
function

When both pulse signals have not been detected for more than the specified value during glass 
open/close operation.

Pulse direction malfunc-
tion

When the pulse signal that is detected during glass open/close operation detects the opposite con-
dition of power window motor operating direction.

Glass recognition position 
malfunction 1

When it detects the error between glass fully closed position in power window switch memory and 
actual fully closed position during glass open/close operation is more than the specified value.

Glass recognition position 
malfunction 2

When it detects pulse count more than the value of glass full stroke during glass open/close opera-
tion.