Infiniti G37 Coupe. Manual - part 1016

INSPECTION AND ADJUSTMENT

PWC-5

< BASIC INSPECTION >

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2.

Turn ignition switch ON.

3.

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

4.

Continue pulling the power window switch UP (AUTO-UP operation). Even after glass stops at fully closed
position, keep pulling the switch for 3 seconds or more. 

5.

Inspect anti-pinch function.

CHECK ANTI-PINCH FUNCTION

1.

Fully open the door window.

2.

Place a piece of wood near fully closed position.

3.

Close door glass completely with AUTO-UP.

• Check that glass lowers for approximately 150 mm or 2 seconds without pinching piece of wood and stops.
• Check that glass does not rise when operating the power window main switch while lowering.

CAUTION:

• Do not check with hands and other part of body because they may be pinched. Do not get pinched.
• Check that AUTO-UP operates before inspection when system initialization is performed.
•  It may switch to fail-safe mode if open/close operation is performed continuously. Perform initial

setting in that situation. Refer to 

PWC-71, "Fail Safe"

• Perform initial setting when auto-up operation or anti-pinch function does not operate normally.
• Finish initial setting. Otherwise, next operation cannot be done.
1.

Auto-up operation

2.

Anti-pinch function

3.

Automatic window adjusting function

PWC-6

< FUNCTION DIAGNOSIS >

POWER WINDOW SYSTEM

FUNCTION DIAGNOSIS

POWER WINDOW SYSTEM

System Diagram

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System Description

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POWER WINDOW MAIN SWITCH

INPUT/OUTPUT SIGNAL CHART

POWER WINDOW SUB-SWITCH

INPUT/OUTPUT SIGNAL CHART

JMKIA1134GB

Item

Input signal to power window main 

switch

Power window main switch 

function

Actuator

Key cylinder switch

LOCK/UNLOCK signal (more than 1 
second over)

Power window control

Each power window motor 

Encoder

Encoder pulse signal

Driver side switch

Driver side power window motor UP/
DOWN signal

Passenger side 
switch

Passenger side power window motor 
UP/DOWN signal

BCM

RAP signal

Item 

Input signal to power window sub- switch

Power window sub-switch 

function

Actuator

Encoder

Encoder pulse signal

Power window control

Passenger side power win-
dow motor

BCM

RAP signal

Passenger side 
switch 

Passenger side power window motor UP/
DOWN signal

POWER WINDOW SYSTEM

PWC-7

< FUNCTION DIAGNOSIS >

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POWER WINDOW OPERATION

• Power window system is operable during the retained power operation timer after turning ignition switch ON

and OFF.

• Power window main switch can open/close all windows.
• Power window sub-switch can open/close the passenger side windows.

POWER WINDOW AUTO-OPERATION

• AUTO UP/DOWN operation can be performed when each power window motor 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.

POWER WINDOW SERIAL LINK

Power window main switch, power window sub-switch and BCM transmit and receive the signal by power win-
dow serial link.
The under mentioned signal is transmitted from BCM to power window main switch.
• Driver side door switch signal
• Keyless power window down signal
The under mentioned signal is transmitted from BCM to power window sub-switch.
• Passenger side door switch signal
• Keyless power window down signal
The under mentioned signal is transmitted from power window main switch to power window sub-switch.
• Passenger side door window operation signal
• Power window control by key cylinder switch signal
• Retained power operation signal
• Power window lock signal

RETAINED POWER OPERATION 

• Retained power operation is an additional power supply function that enables power window system to oper-

ate during the 45 seconds even when ignition switch is turned OFF.

Retained power function cancel conditions

When BCM detects the following signal it cancels.
• Door CLOSE (door switch OFF)

→

OPEN (door switch ON).

• Ignition switch is ON.
• 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
power window switch operation except with the power window switch.

ANTI-PINCH FUNCTION

• Pinch the foreign material in the door glass during AUTO-UP operation is the anti-pinch function that lowers

the door glass 150 mm or 2 seconds when detected.

• 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.

• Resistance is applied to the power window motor rotation that changes the frequency of encoder pulse sig-

nal if foreign material is trapped in the door glass.

• Power window switch controls to lower the window glass for 150 mm or 2 seconds after it detects encoder

pulse signal frequency change.

OPERATION CONDITION
• When all door glass 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.

KEY CYLINDER SWITCH OPERATION

Hold the door key cylinder to the LOCK or UNLOCK direction for 1 second or more to OPEN or CLOSE all
power windows when ignition switch is OFF. In addition, it stops when key position is moved to NEUTRAL
when operating.

PWC-8

< FUNCTION DIAGNOSIS >

POWER WINDOW SYSTEM

OPERATION CONDITION
• Ignition switch OFF.
• Hold door key cylinder to LOCK position for 1 second or more to perform CLOSE operation of the door

glass.

• Hold door key cylinder to UNLOCK position for 1 second or more to perform OPEN operation of the door

glass.

KEYLESS POWER WINDOW DOWN OPERATION

All power windows open when the unlock button on Intelligent Key is activated and kept pressed for more than
3 seconds with the ignition switch OFF. The windows keep opening if the unlock button is continuously
pressed.
The power window opening stops when the following operations are performed.
• When the unlock button is kept pressed more than 15 seconds.
• When the ignition switch is turned ON while the power window opening is operated.
• When the unlock button is released.
While retained power operation activate, keyless power window down function cannot be operated.
Keyless power window down operation mode can be changed by “PW DOWN SET” mode in “WORK SUP-
PORT”. Refer to 

DLK-52, "INTELLIGENT KEY : CONSULT-III Function (BCM - INTELLIGENT KEY)"

.

NOTE:
Use CONSULT-III to change settings.
MODE 1 (3 sec) / MODE 2 (OFF) / MODE 3 (5 sec)

AUTOMATIC WINDOW ADJUSTING FUNCTION

When the driver's/passenger's door(s) is opened, the window of the opened door is lowered approx. 10 mm
(0.39 in).
When the door is closed, the window is raised to fully-closed positions.
Automatic window adjusting function system (opening operation) does not operate when the following.
• The window is 10 mm (0.39 in) or more open from fully-closed positions.
Automatic window adjusting function system (closing operation) does not operate when the following.
• The automatic window adjusting function system (opening operation) operation.
• The keyless power window operation.
• The power window control by the key cylinder switch operation.

Component Parts Location

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