Test C: The High/Low Wiper Speeds Do Not Operate Correctly

PINPOINT TEST C: THE HIGH/LOW WIPER SPEEDS DO NOT OPERATE CORRECTLY

Normal Operation
The windshield wiper motor receives open and ground inputs from the multi-function switch through circuits 56 (DB/OG), 58 (WH), 61 (YE/RD) and 63 (RD). When a wiper function is selected, the multi-function switch grounds 1 of several combinations of these 4 circuits. The windshield wiper motor interprets these ground signals and performs the action requested. The multi-function switch is grounded through circuit 938 (BK/LG).

This pinpoint test is intended to diagnose the following:
- Multi-function switch
- Wiring, terminals or connectors
- Windshield wiper motor

C1-C3:

C3-C5: