Without Pulse

With the ignition switch in the "ON" position, Battery voltage is applied through Fuse C-8 to the WINDSHIELD WIPER/ WASHER SWITCH and to the WINDSHIELD WIPER MOTOR.


WASHER OPERATION

When the WASH button is pressed, voltage is applied through the closed contacts of the WINDSHIELD WIPER/WASHER SWITCH to the WINDSHIELD WASHER PUMP. Because the WINDSHIELD WASHER PUMP is permanently grounded at G103, the pump operates until the button is released.


LOW SPEED OPERATION

With the WINDSHIELD WIPER/ WASHER SWITCH in the "LO" position, the WINDSHIELD WIPER MOTOR is grounded through the "LO" contacts of the WINDSHIELD WIPER/WASHER SWITCH at G201. The WINDSHIELD WIPER MOTOR starts to turn and engages the WINDSHIELD WIPER MOTOR Pawl and Switch. When the "OFF" button is pressed with the WINDSHIELD WIPER MOTOR out of the PARK position, the Pawl pulls the Switch closed. With the Switch closed, the LO side of the WINDSHIELD WIPER MOTOR is provided a ground at G102 until the wiper rotates back into the PARK position. The Pawl opens the Switch, the ground path is interrupted, and WINDSHIELD WIPER MOTOR operation stops. In this manner, the WINDSHIELD WIPER MOTOR will continue to complete at least one full wipe cycle even though the "OFF" button has been pressed. Because voltage is applied to the WINDSHIELD WIPER MOTOR through Fuse C-8, the motor operates at low speed as long as the WINDSHIELD WIPER SWITCH remains in the "LO" position.


HIGH SPEED OPERATION

With the WINDSHIELD WIPER/ WASHER SWITCH in the "HI" position, the WINDSHIELD WIPER MOTOR is grounded through the "HI" contacts of the WINDSHIELD WIPER/WASHER SWITCH at G201. The WINDSHIELD WIPER MOTOR starts to turn and engages the

WINDSHIELD WIPER MOTOR Pawl and Switch. When the "OFF" button is pressed with the WINDSHIELD WIPER MOTOR out of the PARK position, the Pawl pulls the Switch closed. With the Switch closed, the LO side of the WINDSHIELD WIPER MOTOR is provided a ground at G102 until the wiper rotates back into the PARK position. The Pawl opens the Switch, the ground path is interrupted, and WINDSHIELD WIPER MOTOR operation stops. In this manner, the WINDSHIELD WIPER MOTOR will continue to complete at least one full wipe cycle even though the "OFF" button has been pressed. Because voltage is applied to the WINDSHIELD WIPER MOTOR through Fuse C-8, the motor operates at high speed as long as the WINDSHIELD WIPER/WASHER SWITCH remains in the "HI" position.