GM Service Manual Online
For 1990-2009 cars only

Step

Action

Yes

No

Schematic Reference: Wiper/Washer Schematics

Connector End View Reference: Wiper/Washer Connector End Views

DEFINITION: This table diagnoses the front wipers are always on when the wiper/washer switch is turned to the off position.

1

Did you perform the Diagnostic System Check - Vehicle?

Go to Step 2

Go to Diagnostic System Check - Vehicle

2

Verify that the front wipers are always on when the wiper/washer switch is turned to the OFF position.

Do the front wipers operate normally?

Go to Testing for Intermittent Conditions and Poor Connections

Go to Step 3

3

  1. Turn the front wiper switch to the OFF position.
  2. Disconnect the front wiper motor connector.
  3. Test the following circuits for a short to voltage condition at the wiper motor connector:
  4. • Run/Park
    • High
    • Low

Did any of the circuits measure a short to voltage?

Go to Step 4

Go to Step 6

4

  1. Disconnect the wiper/washer switch.
  2. Retest the circuit that measured shorted to voltage at the wiper motor connector.

Does the circuit still have a short to voltage condition?

Go to Step 7

Go to Step 5

5

Inspect for poor connections at the harness connector of the wiper/washer switch. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs .

Did you find and correct the condition?

Go to Step 10

Go to Step 8

6

Inspect for poor connections at the harness connector of the wiper motor. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs .

Did you find and correct the condition?

Go to Step 10

Go to Step 9

7

Repair the short to voltage condition. Refer to Wiring Repairs .

Did you complete the repair?

Go to Step 10

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8

Replace the front wiper/washer switch.

Did you complete the replacement?

Go to Step 10

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9

Replace the front wiper motor.

Did you complete the replacement?

Go to Step 10

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10

Operate the system in order to verify the repair.

Did you correct the condition?

Go to Step 10

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