Test Description
The number(s) below refer to the step number(s) on the diagnostic table.
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This step tests for continuity through the 24K ohms resistor in the windshield wiper/washer switch. The connector behind the instrument panel knee bolster is suitable for performing this step.
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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 high to low as the delay speed is increased. The connector behind the instrument panel knee bolster is suitable for performing this step.
Step | Action | Value(s) | Yes | No | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
Schematic Reference: Wiper/Washer Schematics | ||||||||||||
1 | Did you review the Wiper/Washer System Description and Operation and perform the necessary inspections? | -- | Go to Step 2 | |||||||||
2 |
Does the windshield wiper/washer 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 |
Does the test lamp illuminate? | -- | Go to Step 16 | Go to Step 10 | ||||||||
5 |
Does the test lamp illuminate? | -- | Go to Step 6 | Go to Step 11 | ||||||||
6 |
Does the test lamp illuminate? | -- | Go to Step 7 | Go to Step 12 | ||||||||
7 |
Does the test lamp illuminate in the listed switch positions? | -- | Go to Step 8 | Go to Step 13 | ||||||||
Is the resistance at or near the specified value in all the listed switch positions? | 24K ohms | Go to Step 9 | Go to Step 14 | |||||||||
Does the resistance remain within the specified values from high to low as the delay speed is increased? | 38K - 690K ohms | Go to Step 16 | Go to Step 14 | |||||||||
10 | Test the windshield wiper motor high speed 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 18 | Go to Step 14 | ||||||||
11 | Repair the windshield wiper motor accessory voltage supply circuit for an open or high resistance. Refer to Wiring Repairs in Wiring Systems. Is the repair complete? | -- | Go to Step 18 | -- | ||||||||
12 | Test the windshield wiper switch signal mux 2 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 18 | Go to Step 14 | ||||||||
13 | Test the windshield wiper switch signal mux 1 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 18 | Go to Step 14 | ||||||||
14 | 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 18 | Go to Step 15 | ||||||||
15 | Replace the windshield wiper/washer switch. Refer to Multifunction, Turn Signal, and Hazard Switch Replacement - On Vehicle in Steering Wheel and Column. Is the repair complete? | -- | Go to Step 18 | -- | ||||||||
16 | 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 18 | Go to Step 17 | ||||||||
17 | Replace the windshield wiper motor cover. Is the repair complete? | -- | Go to Step 18 | -- | ||||||||
18 | Operate the system in order to verify the repair. Did you correct the condition? | -- | System OK | Go to Step 3 | ||||||||
