Wiper/Washer Circuit Operation

Whenever the ignition switch is in the ON or the START position, battery voltage is applied through the WIPER WASHER fuse to these components:
^ The front wiper/washer switch (in the combination switch)
^ The front wiper motor pawl and switch contacts.

WASHER OPERATION
When the front wiper/washer switch is pulled back, battery voltage is applied through the wash switch to the front washer pump. The front washer pump is grounded permanently grounded at G104 and will operate as long as the wash switch is engaged. In order to initiate wiper operation, the front wiper/washer switch must be turned to the LO or HI wiper positions.

LOW OPERATION
With the front wiper/washer switch in the LO position, battery voltage is applied to the LOW side of the front wiper motor through these components:
^ The WIPER WASHER fuse
^ The low contacts of the front wiper/washer switch

Because the front wiper motor is permanently grounded at G109, the motor operates at low speed as long as the switch remains in the LO position. When the switch is placed in the OFF position, the pawl and switch assembly provides voltage to the motor until the wipers reach the PARK position.

HIGH OPERATION
With the wiper/washer switch in the HIGH position, battery voltage is applied to the HIGH side of the front wiper motor through these components:
^ The WIPER WASHER fuse.
^ The HI contacts of the front wiper washer switch.

Because the front wiper motor is permanently grounded at G109, the motor operates at high speed as long as the switch remains in the HI position. When the switch is placed in the OFF position, the pawl and switch assembly provides voltage to the motor until the wipers reach the PARK position.