Wiper & Washer: Overview Nissan Quest IV

FRONT WIPER BASIC OPERATION

1. BCM detects the combination switch condition by the combination switch reading function.
2. BCM transmits the front wiper request signal to IPDM E/R via CAN communication depending on each operating condition of the front wiper.
3. IPDM E/R turns ON/OFF the integrated front wiper relay and the front wiper high relay according to the front wiper request signal. IPDM E/R provides the power supply to operate the front wiper HI/LO operation.

FRONT WIPER LO OPERATION

1. BCM transmits the front wiper request signal (LO) to IPDM E/R via CAN communication according to the front wiper LO operating condition.

Front wiper LO operating condition

1. Ignition switch ON
2. Front wiper switch LO or front wiper switch MIST (while pressing)

1. IPDM E/R turns ON the integrated front wiper relay according to the front wiper request signal (LO).

FRONT WIPER HI OPERATION

1. BCM transmits the front wiper request signal (HI) to IPDM E/R via CAN communication according to the front wiper HI operating condition.

Front wiper HI operating condition

1. Ignition switch ON
2. Front wiper switch HI

1. IPDM E/R turns ON the integrated front wiper relay and the front wiper high relay according to the front wiper request signal (HI).

FRONT WIPER INT OPERATION

1. BCM transmits the front wiper request signal (INT) to IPDM E/R via CAN communication depending on the front wiper INT operating condition and intermittent operation delay interval according to the wiper intermittent dial position.

Front wiper INT operating condition

1. Ignition switch ON
2. Front wiper switch INT

Scheme 1

1. IPDM E/R turns ON the integrated front wiper relay so that the front wiper is operated only once according to the front wiper request signal (INT).
2. BCM detects stop position/except stop position of the front wiper motor according to the front wiper stop position signal received from IPDM E/R via CAN communication.
3. BCM transmits the front wiper request signal (INT) again after the intermittent operation delay interval.

Note. Factory setting of the front wiper intermittent operation is operation linked without vehicle speed. Front wiper intermittent operation can be set to operation linked or not linked with vehicle speed using CONSULT. Refer to " WIPER: CONSULT Function (BCM - WIPER) ".

Front wiper intermittent operation with vehicle speed

1. BCM calculates the intermittent operation delay interval from the following

1. Vehicle speed signal
2. Wiper intermittent dial position

Scheme 2

1. BCM stops transmitting the front wiper request signal when the front wiper switch is turned OFF.
2. IPDM E/R detects the front wiper stop position signal from the front wiper motor and detects the front wiper motor position (stop position/except stop position).
3. When the front wiper request signal is stopped, IPDM E/R turns ON the front wiper relay until the front wiper motor returns to the stop position.

Note. BCM stops the transmitting of the front wiper request signal when the ignition switch is OFF. IPDM E/R turns the front wiper relay OFF when the ignition switch is OFF.

FRONT WIPER OPERATION LINKED WITH WASHER

1. BCM transmits the front wiper request signal (LO) to IPDM E/R via CAN communication according to the washer linked operating condition of the front wiper.
2. BCM transmits the front wiper request signal (LO) so that the front wiper operates approximately 2 times when the front washer switch OFF is detected.

Washer linked operating condition of front wiper

1. Ignition switch ON
2. Front washer switch ON (0.4 second or more)

1. IPDM E/R turns ON the integrated front wiper relay according to the front wiper request signal (LO).
2. The washer pump is grounded through the combination switch with the front washer switch ON.

REAR WIPER BASIC OPERATION

1. BCM detects the combination switch condition by the combination switch reading function.
2. BCM controls the rear wiper to start or stop.

REAR WIPER ON OPERATION

1. BCM supplies power to the rear wiper motor according to the rear wiper ON operating condition.

Rear wiper ON operating condition

1. Ignition switch ON
2. Rear wiper switch ON

REAR WIPER INT OPERATION

1. BCM supplies power to the rear wiper motor according to the INT operating condition.

Rear wiper INT operating condition

1. Ignition switch ON
2. Rear wiper switch INT

Scheme 3

1. BCM controls the rear wiper to operate once.
2. BCM detects the rear wiper motor stopping position.
3. BCM supplies power to the rear wiper motor after an intermittent from the stop of the rear wiper motor.

Scheme 4

1. BCM stops supplying power to the rear wiper motor when the rear wiper switch is turned OFF.
2. BCM reads a rear wiper stop position signal from the rear wiper motor to detect a rear wiper motor position.
3. When the rear wiper motor is at other than the stopping position, BCM continues to supply power to the rear wiper motor until it returns to the stopping position.

Note. BCM stops supplying power to the rear wiper motor when the ignition switch is turned OFF.

REAR WIPER OPERATION LINKED WITH WASHER

1. BCM supplies power to the rear wiper motor according to the washer linked operating condition of rear wiper. When the rear washer switch is turned OFF, BCM controls rear wiper to operate approximately 3 times.

Washer linked operating condition of rear wiper

1. Ignition switch ON
2. Rear washer switch ON (0.4 second or more)

1. The washer pump is grounded through the combination switch with the rear washer switch ON.

Description

In auto active test, the IPDM E/R sends a drive signal to the following systems to check their operation.

1. Oil pressure warning lamp
2. Front wiper (LO, HI)
3. Parking lamp
4. License plate lamp
5. Tail lamp
6. Side marker lamp
7. Front fog lamp
8. Headlamp (LO, HI)
9. A/C compressor (magnet clutch)
10. Cooling fan

Operation Procedure

Note. Never perform auto active test in the following condition. Passenger door is open. CONSULT is connected.

1. Close the hood and lift the wiper arms from the windshield. (Prevent windshield damage due to wiper operation) NOTE: When auto active test is performed with hood opened, sprinkle water on windshield beforehand.
2. Turn the ignition switch OFF.
3. Turn the ignition switch ON, and within 20 seconds, press the front door switch (driver side) 10 times. Then turn the ignition switch OFF.
4. Turn the ignition switch ON within 10 seconds. After that the horn sounds once and the auto active test starts. NOTE: Engine starts when ignition switch is turned ON while brake pedal is depressed.
5. The oil pressure warning lamp starts blinking when the auto active test starts.
6. After a series of the following operations is repeated 3 times, auto active test is completed.

Note. When auto active test has to be cancelled halfway through test, turn the ignition switch OFF. When auto active test is not activated, door switch may be the cause. Check door switch. Refer to " COMPONENT FUNCTION CHECK ".

The front wiper does not operate under any operation conditions.

See also:
• COMPONENT FUNCTION CHECK