The wiper control module is probably at fault ,without test that is just a guess . The wiper/washer switch is a input to the wiper control module. Do you know anything about automotive electronics an electrical systems ?
- The Wipers are Inoperative
- Fuse.
- Wiper motor.
- Multi-function switch.
- Circuitry.
- Wiper control module.
Voltage drop testing the power an ground circuits for the wiper control module would be a good place to start . Do you know how to test electrical circuits with a volt meter ?
PINPOINT TEST B: THE WIPERS ARE INOPERATIVE
CONDITIONS
DETAILS/RESULTS/ACTIONS
B1 CHECK FUSE JUNCTION PANEL FUSE 16 (30A)
Fuse 16 (30A)
Yes GO to B2 .
No REPLACE the fuse. TEST the system for normal operation. If the fuse fails again, CHECK for a short to ground. REPAIR as necessary.
B2 CHECK FOR VOLTAGE TO THE WIPER CONTROL MODULE - CIRCUIT 65 (DG)
Wiper Control Module C294
Measure the voltage between wiper control module C294-2, circuit 65 (DG), and ground; and between wiper control module C294-11, circuit 65 (DG), and ground.
- Is the voltage greater than 10 volts?
Yes GO to B3 .
No REPAIR circuit 65 (DG). TEST the system for normal operation.
B3 CHECK CIRCUIT 57 (BK) FOR OPEN
Measure the resistance between wiper control module C294-3, circuit 57 (BK), and ground; and between wiper control module C294-5, circuit 57 (BK), and ground.
- Are the resistances less than 5 ohms?
Yes GO to B4 .
No REPAIR circuit 57 (BK). TEST the system for normal operation.
B4 CHECK THE MULTI-FUNCTION SWITCH
Multi-Function Switch
Check the multi-function switch; refer to Section 211-05 .
- Is the multi-function switch OK?
Yes GO to B5 .
No REPLACE the multi-function switch; REFER to Section 211-05 . TEST the system for normal operation.
B5 CHECK CIRCUIT 993 (BR/W) FOR OPEN
Measure the resistance between multi-function switch C269-4, circuit 993 (BR/W), and wiper control module C294-7, circuit 993 (BR/W).
- Is the resistance less than 5 ohms?
Yes GO to B6 .
No REPAIR circuit 993 (BR/W). TEST the system for normal operation.
B6 CHECK CIRCUIT 589 (O) FOR OPEN
Measure the resistance between multi-function switch C269-1, circuit 589 (O), and wiper control module C294-1, circuit 589 (O).
- Is the resistance less than 5 ohms?
Yes GO to B7 .
No REPAIR circuit 589 (O). TEST the system for normal operation.
B7 CHECK THE WIPER CONTROL MODULE OUTPUT FOR VOLTAGE
Wiper Control Module C294
Wiper Motor C152
Turn the multi-function switch to the HI position.
Measure the voltage between wiper motor C152-4, circuit 57 (BK), and wiper motor C152-3, circuit 56 (DB/O).
- Is the voltage greater than 10 volts?
Yes REPLACE the wiper motor; REFER to Motor-Windshield Wiper . TEST the system for normal operation.
No GO to B8 .
B8 CHECK CIRCUIT 57 (BK) FOR OPEN
Measure the resistance between wiper motor C152-4, circuit 57 (BK), and ground.
- Is the resistance less than 5 ohms?
Yes REPLACE the wiper control module; REFER to Module-Windshield Wiper . TEST the system for normal operation.
No REPAIR circuit 57 (BK). TEST the system for normal operation.
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