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
During normal operation, the windshield wiper motor receives voltage at all times through battery junction box (BJB) fuse 29 (30A), circuit SBB29 (GY/RD). The windshield wiper motor also receives power with the ignition switch in RUN or ACC positions through smart junction box (SJB) fuse 5 (5A), circuit CBP05 (YE). Ground is provided to the windshield wiper motor through circuit GD121 (BK/YE) and circuit GD174 (BK/WH). The run/park and high/low relays are contained in the wiper motor electronics. Mode of operation is dependent on the signal(s) received from the multi-function switch. The windshield wiper motor receives open and ground inputs from the multi-function switch through circuits CRW17 (GN/VT), CRW18 (VT/WH), CRW19 (BU/OG) and CRW15 (BN/WH) to activate the wipers to the appropriate speeds.

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

C1-C2:

C2-C4:

C4-C5: