Wiper Motor: Description and Operation

With the Ignition SW turned ON, the current flows to TERMINAL 18 of the Wiper and Washer SW, TERMINAL 2 of the Washer Motor, TERMINAL 5 of the Wiper Motor and TERMINAL 2 of the Wiper control relay through the Wiper fuse.

1. LOW SPEED POSITION
With Wiper and Washer SW turned to LOW position, the current flows from TERMINAL 18 of the Wiper and Washer SW --> TERMINAL 7 --> TERMINAL 3 of the Wiper Motor --> TERMINAL 1 --> to GROUND and causes to the Wiper Motor to run at low speed.

2. HIGH SPEED POSITION
With Wiper and Washer SW turned to HIGH position, the current flows from TERMINAL 18 of the Wiper and Washer SW --> TERMINAL 13 --> TERMINAL 2 of the Wiper Motor --> TERMINAL 1 --> to GROUND and causes to the Wiper Motor to run at high speed.

3. INT POSITION
With Wiper and Washer SW turned to INT position, current flows from TERMINAL 2 of the Wiper relay --> TERMINAL 4 --> TERMINAL 12 of the Wiper and Washer SW --> TERMINAL 16 --> to GROUND. As a result, the Wiper control relay operates and current flowing through TERMINAL 2 of the relay flows from TERMINAL 5 of the relay --> TERMINAL 4 of the Wiper and Washer SW --> TERMINAL 7 --> TERMINAL 3 of the Wiper Motor --> TERMINAL 1 --> to GROUND and the Motor operates. Intermittent operation is controlled by the charging and discharging of a condenser installed in the relay. By controlling the charge time, the timer control SW (Wiper SW) changes the intermittent interval.

4. MIST POSITION
With Wiper SW turned to MIST position, the current flows from TERMINAL 18 of the Wiper and Washer SW --> TERMINAL 7 --> TERMINAL 3 of the Wiper Motor --> TERMINAL 1 --> to GROUND and causes to the Wiper Motor to run at low speed.

5. WASHER CONTINUOUS OPERATION
When the Washer SW is pushed, the current flowing to TERMINAL 2 of the Washer Motor --> TERMINAL 1 --> TERMINAL 8 of the Wiper and Washer SW --> TERMINAL 16 --> GROUND, causing the Washer Motor to operate to spray the window Washer liquid.

At the same time, the current flowing to TERMINAL 2 of the Wiper control relay flows to TERMINAL 10 --> TERMINAL 8 of the Wiper and Washer SW --> TERMINAL 16 --> GROUND and activates the Washer continuous operation circuit of the Wiper.

As a result, the current flows from TERMINAL 2 of the relay --> TERMINAL 5 --> TERMINAL 4 of the Wiper and Washer SW --> TERMINAL 7 --> TERMINAL 3 of the Wiper Motor --> TERMINAL 1 --> to GROUND, and the Washer operates continuously.