Power Window Control System (Hybrid): Overview Nissan Altima L32

System Description

MAIN POWER WINDOW AND DOOR LOCK/UNLOCK SWITCH INPUT/OUTPUT SIGNAL CHART

MAIN POWER WINDOW AND DOOR LOCK/UNLOCK SWITCH INPUT/OUTPUT SIGNAL CHART

POWER WINDOW OPERATION

1. Power window system is operable during the retained power operation timer after turning ignition switch ON and OFF.
2. Main power window and door lock/unlock switch can open/close all windows.
3. Front & rear power window switches can open/close the corresponding windows.

POWER WINDOW AUTO-OPERATION (FRONT LH)

1. AUTO UP/DOWN operation can be performed when main power window and door lock/unlock switch turns to AUTO.
2. 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.
3. Main power window and door lock/unlock switch reads the changes of encoder signal and stops AUTO operation when door glass is at fully opened/closed position.
4. Power window motor is operable in case encoder is malfunctioning.

RETAINED POWER OPERATION

1. Retained power operation is an additional power supply function that enables power window system to operate during the 45 seconds even when ignition switch is turned OFF

Retained power function cancel conditions

1. Front door CLOSE (door switch OFF) --> OPEN (door switch ON).
2. When ignition switch is ON.
3. 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 OPERATION (FRONT LH)

1. Pinch foreign material in the door glass during AUTO-UP operation, and it is the anti-pinch function that lowers the door glass 150 mm or 2 seconds when detected.
2. 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.
3. Resistance is applied to the power window motor rotation that changes the frequency of encoder pulse signal if foreign material is trapped in the door glass.
4. 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

1. When 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.

Scheme 58

Component Description

FRONT POWER WINDOW LH ANTI-PINCH SYSTEM

COMPONENTS DESCRIPTION

POWER WINDOW MAIN SWITCH : Description

1. BCM supplies power.
2. It operates each power window motor via corresponding power window switch and makes window move up/down when main power window and door lock/unlock switch is operated.

FRONT POWER WINDOW SWITCH : Description

1. BCM supplies power.
2. Front power window motor RH will be operated if power window and door lock/unlock switch RH is operated.

REAR POWER WINDOW SWITCH : Description

1. BCM supplies power.
2. Rear power window motor will be operated if rear power window switch is operated. Rear power window switch.

DRIVER SIDE : Description

Door glass moves UP/DOWN by receiving the signal from main power window and door lock/unlock switch.

PASSENGER SIDE : Description

Door glass moves UP/DOWN by receiving the signal from main power window and door lock/unlock switch or power window and door lock/unlock switch RH.

Detects condition of the front power window motor LH operation and transmits to main power window and door lock/unlock switch as pulse signal.

Description

Detects door open/close condition and transmits the signal to BCM.

Ground circuit of main power window and door lock/unlock switch shuts off if power window lock switch of main power window and door lock/unlock switch is operated. This inhibits all operation, except for the main switch.

ADDITIONAL SERVICE WHEN REMOVING BATTERY NEGATIVE TERMINAL : Description

Initial setting is necessary when battery terminal is disconnected.

POWER WINDOW OPERATION

1. Power window system is operable during the retained power operation timer after turning ignition switch ON and OFF.
2. Main power window and door lock/unlock switch can open/close all windows.
3. Power window and door lock unlock switch RH & rear power window switches LH and RH can open/close the corresponding windows.

POWER WINDOW AUTO-OPERATION (FRONT LH & RH)

1. AUTO UP/DOWN operation can be performed when main power window and door lock/unlock switch & power window and door lock/unlock switch RH turns to AUTO.
2. 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.
3. Power window switch reads the changes of encoder signal and stops AUTO operation when door glass is at fully opened/closed position.
4. Power window motor is operable in case encoder is malfunctioning.

RETAINED POWER OPERATION

1. Retained power operation is an additional power supply function that enables power window system to operate during the 45 seconds even when ignition switch is turned OFF

Retained power function cancel conditions

1. Front door CLOSE (door switch OFF) --> OPEN (door switch ON).
2. When ignition switch is ON.
3. When timer time passes. (45 seconds)

ANTI-PINCH OPERATION (FRONT LH & RH)

1. Pinch foreign material in the door glass during AUTO-UP operation, and it is the anti-pinch function that lowers the door glass 150 mm or 2 seconds when detected.
2. 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.
3. Resistance is applied to the power window motor rotation that changes the frequency of encoder pulse signal if foreign material is trapped in the door glass.
4. 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

1. 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 more than 1 second to OPEN or CLOSE front power windows when ignition switch is OFF. In addition, it stops when key position is moved to NEUTRAL when operating.

1. Ignition switch OFF
2. Hold door key cylinder to LOCK position for more than 1 second to perform CLOSE operation of the door glass.
3. Hold door key cylinder to UNLOCK position for more than 1 second to perform OPEN operation of the door glass.

KEYLESS POWER WINDOW DOWN OPERATION (FRONT LH & RH)

Front power windows open when the unlock button on Intelligent Key is activated and kept pressed for more than 3(NOTE) 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

1. When the unlock button is kept pressed more than 15 seconds.
2. When the ignition switch is turned ON while the power window opening is operated.
3. When the unlock button is released.

While retained power operation activate, keyless power window down function cannot be operated.

Note. Keyless power window down operation mode can be changed by "PW DOWN SET" mode in "WORK SUPPORT". Refer to " INTELLIGENT KEY: CONSULT-III FUNCTION (BCM - INTELLIGENT KEY) ".

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

Scheme 59

1. BCM supplies power.
2. It operates each power window motor via corresponding power window switch and makes window move up/down when main power window and door lock/unlock switch is operated.

1. BCM supplies power.
2. Rear power window motor will be operated if rear power window switch is operated. Rear power window switch.

Door glass moves UP/DOWN by receiving the signal from power window main switch.

DRIVER SIDE: Component Function Check

1. CHECK POWER WINDOW MOTOR CIRCUIT Does front power window motor LH operate with operating main power window and door lock/unlock switch? Is the inspection result normal? YES: Front power window motor LH is OK. NO: Refer to "DRIVER SIDE: DIAGNOSIS PROCEDURE"in «DRIVER SIDE : Description»(ref-278391-S40258645532008012700000) .

DRIVER SIDE: Diagnosis Procedure

Front Power Window Motor LH Circuit Check

Scheme 60

1. CHECK MAIN POWER WINDOW AND DOOR LOCK/UNLOCK SWITCH OUTPUT SIGNAL Disconnect front power window motor LH. Turn ignition switch ON. Check voltage between front power window motor LH connector and ground. TERMINALS VOLTAGE REFERENCE Terminal Main power window and door lock/unlock switch condition Voltage (V) (Approx.) (+) (-) Power window motor LH connector Terminal D9 2 Ground UP Battery voltage DOWN 0 1 UP 0 DOWN Battery voltage Is the measurement value within the specification? YES: GO TO 2 NO: Replace main power window and door lock/unlock switch. Refer to " «REMOVAL AND INSTALLATION»(ref-278391-S30787178592008012700000) ". After that, refer to " «POWER WINDOW MAIN SWITCH: SPECIAL REPAIR REQUIREMENT»(ref-278391-S04537628522008012700000) ".
2. CHECK HARNESS CONTINUITY Turn ignition switch OFF. Disconnect main power window and door lock/unlock switch and front power window motor LH. Check continuity between main power window and door lock/unlock switch connector (A) and front power window motor connector LH (B). TERMINALS CONTINUITY REFERENCE Main power window and door lock/unlock switch connector Terminal Front power window motor LH connector Terminal Continuity D7 (A) 8 D9 (B) 2 Yes 11 1 Check continuity between main power window and door lock/unlock switch connector (A) and ground. TERMINALS CONTINUITY REFERENCE Main power window and door lock/unlock switch connector Terminal Ground Continuity D7 (A) 8 No 11 Is the inspection result normal? YES: GO TO 3 NO: Repair or replace harness.
3. CHECK POWER WINDOW MOTOR Check front power window motor LH. Refer to " «DRIVER SIDE: Component Inspection»(ref-278391-S34524920532008012700000) ". Is the inspection result normal? YES: Check intermittent incident. Refer to " «INTERMITTENT INCIDENT»(ref-278349-S01599244342008012700000) ". NO: Replace power window motor LH. Refer to " «REMOVAL AND INSTALLATION»(ref-278396-S10548006462008012700000) ". After that, refer to "DRIVER SIDE: SPECIAL REPAIR REQUIREMENT in «DRIVER SIDE: Description»(ref-278391-S40258645532008012700000) ".

DRIVER SIDE: Component Inspection

COMPONENT INSPECTION

1. CHECK FRONT POWER WINDOW MOTOR LH Does motor operate by connecting the battery voltage directly to power window motor? TERMINALS AND MOTOR CONDITION REFERENCE Terminal Motor condition (+) (-) 1 2 DOWN 2 1 UP Is the inspection result normal? YES: Front power window motor LH is OK. NO: Replace front power window motor LH. Refer to " «REMOVAL AND INSTALLATION»(ref-278396-S10548006462008012700000) ". After that, refer to "DRIVER SIDE: SPECIAL REPAIR REQUIREMENT in «DRIVER SIDE: Description»(ref-278391-S40258645532008012700000) ".

DRIVER SIDE: Special Repair Requirement

1. PERFORM INITIALIZATION PROCEDURE Perform initialization procedure. Refer to "ADDITIONAL SERVICE WHEN REPLACING CONTROL UNIT: SPECIAL REPAIR REQUIREMENT"in «ADDITIONAL SERVICE WHEN REPLACING CONTROL UNIT»(ref-278391-S25764510452008012700000) ". Is the inspection result normal? YES: GO TO 2 NO: Check intermittent incident. Refer to " «INTERMITTENT INCIDENT»(ref-278349-S01599244342008012700000) ".
2. CHECK ANTI-PINCH OPERATION Check anti-pinch operation. Refer to "ADDITIONAL SERVICE WHEN REPLACING CONTROL UNIT: SPECIAL REPAIR REQUIREMENT"in «ADDITIONAL SERVICE WHEN REPLACING CONTROL UNIT»(ref-278391-S25764510452008012700000) ". Is the inspection result normal? YES: Inspection End. NO: Refer to " «DRIVER SIDE: Component Function Check»(ref-278391-S39114084872008012700000) ".

Detects condition of the front power window motor LH operation and transmits to main power window and door lock/unlock switch as pulse signal.

DRIVER SIDE: Component Function Check

1. CHECK ENCODER OPERATION Does front door glass LH perform AUTO open/close operation normally when operating main power window and door lock/unlock switch? Is the inspection result normal? YES: Encoder operation is OK. NO: Refer to "DRIVER SIDE: Diagnosis Procedure in «DRIVER SIDE : Description»(ref-278391-S11675280392008012700000) "

DRIVER SIDE: Diagnosis Procedure

Encoder Circuit Check

Scheme 61

1. CHECK ENCODER OPERATION Turn ignition switch ON. Check signal between main power window and door lock/unlock switch connector and ground with oscilloscope. TERMINALS SIGNALS REFERENCE Terminals Signal (Reference value) (+) (-) Main power window and door lock/unlock switch connector Terminal D7 9 Ground Refer to following signal 13 Is the inspection result normal? YES: Check intermittent incident. Refer to " «INTERMITTENT INCIDENT»(ref-278349-S01599244342008012700000) ". NO: GO TO 2
2. CHECK FRONT POWER WINDOW MOTOR LH POWER SUPPLY ENCODER Turn ignition switch ON. Check voltage between front power window motor LH connector and ground. TERMINALS VOLTAGE REFERENCE Terminal Voltage (V) (Approx.) (+) (-) Front power window motor LH connector Terminal D9 4 Ground 10 Is the measurement value within the specification? YES: GO TO 4 NO: GO TO 3
3. CHECK HARNESS CONTINUITY 1 Turn ignition switch OFF. Disconnect main power window and door lock/unlock switch and front power window motor LH. Check continuity between main power window and door lock/unlock switch connector (A) and front power window motor LH connector (B). TERMINALS CONTINUITY REFERENCE Main power window and door lock/unlock switch connector Terminal Front power window motor LH connector Terminal Continuity D7 (A) 15 D9 (B) 4 Yes Check continuity between main power window and door lock/unlock switch connector (A) and ground. TERMINALS CONTINUITY REFERENCE Main power window and door lock/unlock switch connector Terminal Ground Continuity D7 (A) 15 No Is the inspection result normal? YES: Replace main power window and door lock/unlock switch. Refer to " «REMOVAL AND INSTALLATION»(ref-278391-S30787178592008012700000) ". After that, refer to " «POWER WINDOW MAIN SWITCH: SPECIAL REPAIR REQUIREMENT»(ref-278391-S04537628522008012700000) ". NO: Repair or replace harness.
4. CHECK GROUND CIRCUIT Turn ignition switch OFF. Disconnect front power window motor LH. Check continuity between front power window motor LH connector and ground. TERMINALS CONTINUITY REFERENCE Front power window motor LH connector Terminal Ground Continuity D9 6 Yes Is the inspection result normal? YES: GO TO 6 NO: GO TO 5
5. CHECK HARNESS CONTINUITY 2 Disconnect main power window and door lock/unlock switch. Check continuity between main power window and door lock/unlock switch connector (A) and front power window motor LH connector (B). TERMINALS CONTINUITY REFERENCE Main power window and door lock/unlock switch connector Terminal Front power window motor LH connector Terminal Continuity D7 (A 2 D9 (B) 6 Yes Is the inspection result normal? YES: Replace main power window and door lock/unlock switch. Refer to " «REMOVAL AND INSTALLATION»(ref-278391-S30787178592008012700000) ". After that, refer to " «POWER WINDOW MAIN SWITCH: SPECIAL REPAIR REQUIREMENT»(ref-278391-S04537628522008012700000) ". NO: Repair or replace harness.
6. CHECK HARNESS CONTINUITY 3 Disconnect main power window and door lock/unlock switch. Check continuity between main power window and door lock/unlock switch connector (A) and front power window motor LH connector (B). TERMINALS CONTINUITY REFERENCE Main power window and door lock/unlock switch connector Terminal Front power window motor LH connector Terminal Continuity D7 (A) 9 D9 (B) 3 Yes 13 5 Check continuity between main power window and door lock/unlock switch connector (A) and ground. TERMINALS CONTINUITY REFERENCE Main power window and door lock/unlock switch connector Terminal Ground Continuity D7 (A) 9 No 13 Is the inspection result normal? YES: Replace front power window motor LH. Refer to " «REMOVAL AND INSTALLATION»(ref-278396-S10548006462008012700000) ". After that, refer to "DRIVER SIDE: SPECIAL REPAIR REQUIREMENT in «DRIVER SIDE: Description»(ref-278391-S40258645532008012700000) ". NO: Repair or replace harness.

Detects door open/close condition and transmits the signal to BCM.

Main power window and door lock/unlock switch detects condition of the door key cylinder and transmits to BCM as the LOCK or UNLOCK signals.

Main power window and door lock/unlock switch, power window and door lock/unlock switch RH and BCM transmit and receive the signal by power window serial link.

The signal mentioned below is transmitted from BCM to main power window and door lock/unlock switch and power window and door lock/unlock switch RH

1. Keyless power window down signal The signal mentioned below is transmitted from main power window and door lock/unlock switch to power window and door lock/unlock switch RH
2. Front door window RH operation signal
3. Power window control by key cylinder switch signal
4. Power window lock switch signal
5. Retained power operation signal

Main power window and door lock/unlock switch, power window and door lock/unlock switch RH and BCM transmit and receive the signal by power window serial link.

The signal mentioned below is transmitted from BCM to main power window and door lock/unlock switch and power window and door lock/unlock switch RH

1. Keyless power window down signal

The signal mentioned below is transmitted from main power window and door lock/unlock switch to power window and door lock/unlock switch RH

1. Front door window RH operation signal
2. Power window control by key cylinder switch signal
3. Retained power operation signal
4. Power window lock switch signal

Ground circuit of main power window and door lock/unlock switch shuts off if power window lock switch of main power window and door lock/unlock switch is operated. This inhibits all operation, except for the main switch.