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 390 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: The windshield wiper motor operates in some modes but not all modes. | ||||||||||
1 | Did you perform the Diagnostic System Check - Vehicle? | -- | Go to Step 2 | |||||||
2 |
Does the system operate normally? | -- | Go to Testing for Intermittent Conditions and Poor Connections | 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 8 | Go to Step 7 | ||||||
Is the resistance near the specified value in all of the listed switch positions? | 390 ohms | Go to Step 6 | Go to Step 10 | |||||||
Does the resistance remain within the specified values from low to high as the delay speed is increased? | 1000-10K ohms | Go to Step 14 | Go to Step 12 | |||||||
7 | Test the windshield wiper switch high signal circuit for an open or high resistance. Refer to Circuit Testing and to Wiring Repairs . Did you find and correct the condition? | -- | Go to Step 16 | Go to Step 14 | ||||||
8 | Test the wiper switch ground circuit for an open or high resistance. Refer to Circuit Testing and to Wiring Repairs . Did you find and correct the condition? | -- | Go to Step 16 | Go to Step 9 | ||||||
9 | Test the windshield wiper switch high signal circuit in the steering column harness for an open or high resistance. Refer to Circuit Testing and to Wiring Repairs . Did you find and correct the condition? | -- | Go to Step 16 | Go to Step 12 | ||||||
10 | Test the windshield wiper switch voltage supply circuit for an open or short to ground. Refer to Circuit Testing and to Wiring Repairs . Did you find and correct the condition? | -- | Go to Step 16 | Go to Step 11 | ||||||
11 | Test the windshield wiper switch signal 1 circuit for an open or short to ground. Refer to Circuit Testing and to Wiring Repairs . Did you find and correct the condition? | -- | Go to Step 16 | Go to Step 12 | ||||||
12 | Inspect for poor connections at the windshield wiper/washer switch. Refer to Testing for Intermittent Conditions and Poor Connections and to Connector Repairs . Did you find and correct the condition? | -- | Go to Step 16 | Go to Step 13 | ||||||
13 | Replace the windshield wiper/washer switch. Refer to Turn Signal Multifunction Switch Replacement . Is the repair complete? | -- | Go to Step 16 | -- | ||||||
14 | Inspect for poor connections at the windshield wiper motor. Refer to Testing for Intermittent Conditions and Poor Connections and to Connector Repairs . Did you find and correct the condition? | -- | Go to Step 16 | Go to Step 15 | ||||||
15 | Replace the windshield wiper motor cover. Refer to Windshield Wiper Motor Cover Replacement . Is the repair complete? | -- | Go to Step 16 | -- | ||||||
16 | Operate the system in order to verify the repair. Did you correct the condition? | -- | System OK | Go to Step 3 | ||||||
