Test Description
The numbers below refer to the step numbers on the diagnostic table.
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This step tests for continuity through the 380 ohms resistor in the windshield wiper/washer switch.
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This step tests for continuity through the delay resistors in the windshield wiper/washer switch. The measured resistance will change in sequence from low to high as the delay speed is increased.
Step | Action | Values | Yes | No | ||||
|---|---|---|---|---|---|---|---|---|
Schematic Reference: Wiper/Washer Schematics Connector End View Reference: Wiper/Washer Connector End Views DEFINITION: Windshield wipers are inoperative in one or more modes. | ||||||||
1 | Did you perform the Wiper/Washer Diagnostic System Check? | -- | Go to Step 2 | |||||
2 |
Does the system operate normally? | -- | Go to Testing for Intermittent Conditions and Poor Connections in Wiring Systems | Go to Step 3 | ||||
3 | Do the windshield wipers operate in the high speed mode? | -- | Go to Step 5 | Go to Step 4 | ||||
4 |
Do the windshield wipers operate at high speed? | -- | Go to Step 9 | Go to Step 8 | ||||
Is the resistance near the specified value in the listed switch positions? | 380 ohms | Go to Step 6 | Go to Step 11 | |||||
Does the resistance remain within the specified values from low to high as the delay speed is increased? | 1000-10K ohms | Go to Step 7 | Go to Step 13 | |||||
7 | Test the windshield wiper switch signal 1 circuit for a short to ground. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you find and correct the condition? | -- | Go to Step 17 | Go to Step 15 | ||||
8 | Test the windshield wiper switch high signal circuit for an open or high resistance. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you find and correct the condition? | -- | Go to Step 17 | Go to Step 15 | ||||
9 | Test the wiper switch ground circuit for an open or high resistance. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you find and correct the condition? | -- | Go to Step 17 | Go to Step 10 | ||||
10 | Test the windshield wiper switch high signal and ground circuits in the steering column harness for an open or high resistance. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you find and correct the condition? | -- | Go to Step 17 | Go to Step 13 | ||||
11 | Test the windshield wiper switch voltage supply circuit for an open or short to ground. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you find and correct the condition? | -- | Go to Step 17 | Go to Step 12 | ||||
12 | Test the windshield wiper switch signal 1 circuit for an open or high resistance. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you find and correct the condition? | -- | Go to Step 17 | Go to Step 13 | ||||
13 | Inspect for poor connections at the windshield wiper/washer switch. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs in Wiring Systems. Did you find and correct the condition? | -- | Go to Step 17 | Go to Step 14 | ||||
14 | Replace the windshield wiper/washer switch. Refer to Turn Signal Multifunction Switch Replacement in Steering Wheel and Column. Is the repair complete? | -- | Go to Step 17 | -- | ||||
15 | Inspect for poor connections at the windshield wiper motor. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs in Wiring Systems. Did you find and correct the condition? | -- | Go to Step 17 | Go to Step 16 | ||||
16 | Replace the windshield wiper motor. Refer to Windshield Wiper Transmission Replacement . Is the repair complete? | -- | Go to Step 17 | -- | ||||
17 | Operate the system in order to verify the repair. Did you correct the condition? | -- | System OK | Go to Step 3 | ||||
