The Wiper / Washer System consists of the following components:

The windshield wiper motor module is part of the windshield wiper motor cover and controls the wiper motor operation. The windshield wiper motor is a 2 speed motor. Windshield wiper DELAY operation is a low speed wiper motor function with a variable delay interval between the wipe cycles. The DELAY interval is controlled through a series of resistors within the wiper / washer switch.

The WPR fuse supplies voltage to the windshield wiper / washer switch and to the windshield system module. Ground is applied from G201 to the windshield wiper system module. Ground is also applied from G200 to the windshield washer fluid level switch and the windshield washer fluid pump.

When the wiper / washer switch is in the LOW position, two different voltages are applied to the windshield wiper module to operate the windshield wiper motor at low speed.

With the wiper / washer switch in the HIGH position, three different voltages are applied to the windshield wiper module to operate the windshield wiper motor at high speed.

Windshield wiper intermittent operation is a low speed wiper motor function with a variable delay interval between the wiper motor cycles. The delay interval is determined by a series of resistors within the wiper/washer switch. During intermittent wiper operation, the windshield wiper switch signal 1 circuit is reduced through the resistors.

When the wiper / washer switch is in the DELAY position, two different voltages are applied to the windshield wiper module to operate the windshield wiper motor in a intermittent mode at low speed.

When the windshield wiper / washer switch is turned to the OFF position while the wiper motor is somewhere in mid-cycle, the wiper motor module will continue to operate the wiper motor until the wipers reach the park position. If the ignition is turned off while the wipers are in mid-cycle, the wipers will stop immediately where they are. The wipers will park the next time the ignition is cycled to the ON position.

When the wiper switch is moved to the MIST position, the wiper motor will operate in the low speed mode until the switch is released. Two different voltages are applied to the windshield wiper module to operate the windshield wiper motor until the cycle is completed.

When the wiper switch is moved to the WASH position, the washer fluid pump and wiper motor will operate until the switch is released.

The windshield wiper / washer switch function uses two sets of switch contacts, one for the washer pump, and one to activate the wipers in the low speed mode. When the wiper switch is moved to the WASH position:

The wiper motor will continue to operate for approximately 2 wipe cycles after the wash switch is released. Ground for the windshield washer fluid pump is supplied from G101.

The low washer fluid indicator is located in the instrument panel cluster (IPC). Ground is applied at all times from G200 to the windshield washer fluid level switch. When the washer fluid is low, ground is applied to the low washer fluid indicator signal circuit to the IPC. The IPC will then illuminate the low washer fluid indicator.