Wipers/Washers System Description - Components

Wiper/Washer Switch 

The wiper/washer switch inputs the switch status to the body control module. As backup, the windshield wiper control unit/motor is performed via the body control module at the time of LO or HI switch operation in case of an abnormality of the wiper/washer switch, or the input of the LO and HI line is detected by the LIN.

Automatic Lighting/Rain Sensor (With Automatic Wiper) 

The auto wiper signal or the auto wiper fail signal is sent via the LIN to the body control module.

Rear Window Wiper Motor 

The rear window wiper motor is controlled by the body control module. When the motor temperature becomes high because of an overload etc., the motor is stopped temporarily by its circuit breaker, interrupting the circuit.