In addition to the features of a conventional (non-pulse) wiper system (mist, low and high speeds), the pulse type windshield wiper/washer system includes an operating mode in which the wipers make single sweeps with an adjustable time interval between sweeps. The time interval is controlled by a solid-state timer in the wiper motor cover. The duration of the delay interval is determined by the delay resistor in the wiper/washer switch.

When the wiper switch is turned OFF, the wiper motor returns the wipers to the innerwipe position, and the wiper motor reverses, activating its external depressed-park mechanism to lower the wipers to the park position.

The Rainsense system includes the features of a conventional (non-Rainsense) wiper system (mist, low and high speeds). Additionally, the Rainsense system automatically operates when rain is sensed on the windshield and the wiper/washer switch is in one of the AUTO DELAY positions.

The Rainsense system includes the features of a conventional (non-Rainsense) wiper system (mist, low and high speeds). Additionally, the Rainsense system automatically operates when rain is sensed on the windshield and the wiper/washer switch is in one of the AUTO DELAY positions.

With the wiper switch in DELAY (pulse), battery voltage is applied to the wiper motor at terminal B through CKT 243. Voltage is also applied to terminal G through CKT 478 and terminal H through CKT 477.

The length of delay time between sweeps is controlled by the variable-pulse delay resistor in the wiper washer switch. The delay is adjustable from 1-22 seconds, nominally.

With the wiper switch in AUTO DELAY (Rainsense), battery voltage is applied to the wiper motor connector at terminal B through CKT 243. Voltage is applied to terminal G through CKT 478 and terminal H through CKT 477. Anytime the ignition switch is in RUN or ACCY, battery voltage is present at the Rainsense module connector terminal 8 through CKT 443.

In the LO position of the wiper switch, battery voltage is applied to the wiper motor connector at terminal B through CKT 243 and terminal H through CKT 477. Voltage is also applied to terminal G through CKT 478.

In the HI position of the wiper switch, battery voltage is applied at terminals B, D, and H of the wiper motor assembly through CKTs 243, 92, and 477. Voltage is also applied to terminal G through CKT 478.

When turned OFF from any position, the wipers complete the last sweep and park. When the wiper switch is in OFF, the wiper motor assembly has battery voltage applied to terminal B only, from CKT 243. When the end of sweep switch opens, the control circuit reverses the wiper motor, which activates the external depressed park mechanism (crank arm). The wiper motor continues to run until the park switch opens.

When the washer switch is turned ON, battery voltage is applied to terminal G of the wiper motor assembly through CKT 478. The wiper motor has voltage applied to it automatically by the wiper motor cover circuit board and operates at low speed during the wash cycle and then for two sweeps after the wash cycle is complete. If the wipers had been in DELAY, LO or HI, they would return to that operation after the wash cycle.

When the wiper switch is turned to MIST and released, the wipers make one sweep at low speed and return to park position. If the wiper switch is held in MIST, the wipers will continue to operate until the switch is released. In the MIST position of the wiper switch, battery voltage is applied to the wiper motor connector at terminal B through CKT 243 and terminal H through CKT 477. Voltage is also applied to terminal G through CKT 478.