Test A: The Wipers Are Inoperative

PINPOINT TEST A: THE WIPERS ARE INOPERATIVE

A1:

A1-A3:

A4-A6:

A7:

Normal Operation
The windshield wiper motor receives battery voltage from the battery junction box (BJB) through circuit 2025 (RD/YE), and voltage from the central junction box (CJB) through circuit 65 (DG) when the ignition switch is in the RUN or ACC position. The windshield wiper motor is grounded through circuit 676 (PK/OG) and circuit 57 (BK). The windshield wiper motor receives switched ground signals 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 57 (BK).

Possible Causes
- Fuse(s)
- Circuit 56 (DB/OG) open
- Circuit 57 (BK) open
- Circuit 58 (WH) open
- Circuit 61 (YE/RD) open
- Circuit 63 (RD) open
- Circuit 65 (DG) open or short to ground
- Circuit 676 (PK/OG) open
- Circuit 2025 (RD/YE) open or short to ground
- Multi-function switch
- Windshield wiper motor