System Description

SYSTEM DIAGRAM

Component		Function
Rear wiper motor		Refer to Rear Wiper Motor.
IPDM E/R		Controls rear washer pump relay according to the request (via CAN communication) from BCM.
BCM		Supplies power to the rear wiper motor
Combination switch (wiper & washer switch)		Combination switch: Transmits the status of the combination switch (wiper and washer) to BCM.
Washer pump		Refer to Front And Rear Washer Pump.
Rear washer pump relay		Controls washer pump according to the request from IPDM E/R.

OUTLINE

The rear wiper is controlled by each function of BCM.

Control by BCM

REAR WIPER BASIC OPERATION

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

REAR WIPER ON OPERATION

BCM supplies power to the rear wiper motor according to the rear wiper ON operating condition.
Rear wiper ON operating condition
- Ignition switch ON
- Rear wiper switch ON

REAR WIPER INT OPERATION

BCM supplies power to the rear wiper motor according to the INT operating condition.
Rear wiper INT operating condition
- Ignition switch ON
- Rear wiper switch INT
BCM controls the rear wiper to operate once.
BCM detects the rear wiper motor stop position.
BCM supplies power to the rear wiper motor after an intermittent from the stop of the rear wiper motor.

REAR WIPER AUTO STOP OPERATION

BCM stops supplying power to the rear wiper motor when the rear wiper switch is turned OFF.
BCM reads a rear wiper stop position signal from the rear wiper motor to detect a rear wiper motor position.
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 stop position.

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

REAR WIPER OPERATION LINKED WITH WASHER

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
- Ignition switch ON
- Rear washer switch ON
BCM transmits the rear washer pump request signal to IPDM E/R cia CAN communication depending condition.
IPDM E/R turns ON/OFF the rear washer pump relay according to the rear washer pump request signal. IPDM E/R provides the power supply to operate the front and rear washer pump.

REAR WIPER OPERATION LINKED WITH REVERSE

BCM controls rear wiper to INT operating according to the conditions of rear wiper operation linked with reverse.
Condition of rear wiper operation linked with reverse
- Ignition switch ON
- Front wiper switch: LO, HI, INT or AUTO
- Rear wiper switch OFF
- Shift lever “R”
When shift lever is shifted to “R”, TCM transmits reverse switch signal to BCM via CAN communication, and then operates rear wiper motor.

note	Rear wiper operation linked with reverse can be set to ON or OFF changed by combination meter setting.