Wiper and Washer Systems: Description and Operation

With the Ignition SW turned ON, current flows to TERMINAL 17 of the Wiper and Washer SW, TERMINAL 2 of the Washer Motor and TERMINAL 6 of the Wiper Motor through the WIPER fuse.

1. LOW SPEED POSITION
With Wiper and Washer SW turned to LO position, the current flows from TERMINAL 17 of the Wiper and Washer SW --> TERMINAL 7 --> TERMINAL 5 of the Front Wiper Motor --> TERMINAL 4 --> GROUND, and causes to the Wiper Motor to run at low speed.

2. HIGH SPEED POSITION
With Wiper and Washer SW turned to HI position, the current flows from TERMINAL 17 of the Wiper and Washer SW --> TERMINAL 8 --> TERMINAL 3 of the Front Wiper Motor --> TERMINAL 4 --> GROUND, and causes the Front Wiper Motor to run at high speed.

3. INT POSITION
With Wiper and Washer SW turned to INT position, the Wiper Relay operates and the current flows from TERMINAL 17 of the Wiper and Washer SW --> TERMINAL 2 --> GROUND. This activates the intermittent circuit, and the current flows from TERMINAL 17 of the Wiper and Washer SW --> TERMINAL 7 --> TERMINAL 5 of the Front Wiper Motor --> TERMINAL 4 --> GROUND and the wiper operates. Intermittent operation is controlled by a condenser charge and discharge function in the relay.

4. WASHER CONTINUOUS OPERATION
With Wiper and Washer SW pulled to WASHER position, the current flows from the WIPER fuse to TERMINAL 2 of the Washer Motor --> TERMINAL 1 --> TERMINAL 11 of the Wiper and Washer SW --> TERMINAL 2 --> GROUND, and causes the Washer Motor to run and Window Washer to spray. Simultaneously, current flows from the WIPER fuse to TERMINAL 17 of the Wiper and Washer SW --> TERMINAL 7 --> TERMINAL 5 of the Front Wiper Motor --> TERMINAL 4 --> GROUND, causing the wiper to function.