High Speed

CIRCUIT OPERATION
When HIGH speed operation is selected, a multiplexed signal is sent to the Body Control Module (BCM) on circuit V52. The wiper switch also supplies voltage to the HIGH/LOW wiper relay, coil side on circuit V16. The BCM then turns the wipers ON by grounding the V14 circuit.

When the BCM grounds circuit V14, which is the coil side of the wiper ON relay the relay to switches from its normally grounded position to its powered position. This connects the output of fuse 9, a 30 Amp in the PDC to circuit V5.

When the V16 circuit is grounded the HIGH/LOW relay switches, from its normal position of LOW speed, to the HIGH speed contact. Ground for the relay is supplied on circuit Z1 and terminates at the engine ground.

Power for the windshield wiper motor is supplied from the HIGH/LOW wiper relay to the motor on circuit V4. Ground for the wiper motor is provided on circuit Z1.