Wiper System Description

The windshield wiper system includes the following components:




^ The wiper element
^ The wiper blade
^ The wiper arm
^ The wiper motor
^ The wiper transmission (1)
^ The wiper switch




The wiper/washer switch (3) controls the wiper system. The switch is located on the right side of the steering column. The wiper circuit ensures that the wiper blades will automatically return to their final rest position when the wiper switch is OFF.

Interval (Pulse) System Operation
Move the wiper/washer switch to the INT position, in order to operate the wiper system in the intermittent (pulse) mode. With the ignition switch in the ON position, B+ is applied to cavity 6 of the windshield wiper motor. With the windshield wiper/washer switch in the INTERVAL position, B+ is applied to cavity 3 of the windshield wiper motor. The length of delay time is determined by the interval switch. Turn the ring on the wiper/washer switch from S (slow cycling) to F (fast cycling) in order to adjust the cycle speed. The windshield wiper motor operates the wipers for the desired delay.

LOW Speed System Operation
With the ignition switch in the ON position, B+ is applied to cavity 6 of the windshield wiper motor. When the windshield wiper/washer switch is in the LO position, B+ is applied to cavity 3 of the windshield wiper motor. The windshield wiper motor operates the wipers at LOW speed until the windshield wiper/washer switch is turned to the OFF position.

When the windshield wiper washer switch is turned off, the mechanical pawl of the windshield wiper motor has B+ applied to cavity 5 until it moves to the park position. In the park position an open occurs through the windshield wiper motor cavity 6 and cavity 5, breaking the circuit.

HIGH Speed System Operation
With the ignition switch in the ON position, B+ is applied to cavity 6 of the windshield wiper motor. When the windshield wiper/washer switch is in the HI position, B+ is applied to cavity 2 of the windshield wiper motor. The windshield wiper motor operates the wipers at HIGH speed until the windshield wiper/washer switch is turned to the OFF position. When the windshield wiper/washer switch is turned OFF, the mechanical pawl of the windshield wiper motor has B+ applied to cavity 5 until it moves to the park position. In the park position an open occurs through the windshield wiper motor cavity 6 and cavity 5, breaking the circuit.