GM Service Manual Online
For 1990-2009 cars only

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Action

Yes

No

Schematic Reference: Wiper/Washer Schematics

Connector End View Reference: Wiper/Washer Connector End Views

DEFINITION: The washer pump may operate but all of the wiper motor functions are inoperative.

1

Did you review the Wiper/Washer System Description and Operation and perform the necessary inspections?

Go to Step 2

Go to Symptoms - Wiper/Washer Systems

2

  1. Turn the ignition ON.
  2. Operate the windshield wiper/washer system in all the switch positions.

Does the windshield wiper/washer system operate normally?

Go to Testing for Intermittent Conditions and Poor Connections

Go to Step 3

3

  1. Disconnect the windshield wiper motor connector.
  2. Connect a test lamp from the pulse delay signal circuit terminal in the wiper motor harness connector to a good ground.
  3. Turn the ignition ON.
  4. Press the windshield washer switch.

Does the test lamp illuminate?

Go to Step 4

Go to Step 6

4

Connect a test lamp from the accessory voltage supply circuit terminal in the wiper motor harness connector to a good ground.

Does the test lamp illuminate?

Go to Step 5

Go to Step 8

5

Connect a test lamp from the accessory voltage supply circuit terminal to the ground circuit terminal in the wiper motor harness connector .

Does the test lamp illuminate?

Go to Step 13

Go to Step 9

6

Test the windshield wiper switch pulse delay signal 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 15

Go to Step 7

7

Test the accessory voltage supply circuit to the windshield wiper/washer switch for an open or short to ground. Refer to Circuit Testing and Wiring Repairs .

Did you find and correct the condition?

Go to Step 15

Go to Step 10

8

Repair the windshield wiper motor accessory voltage supply circuit for an open or high resistance. Refer to Wiring Repairs or Connector Repairs .

Is the repair complete?

Go to Step 15

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9

Repair the windshield wiper motor ground circuit for an open or high resistance. Refer to Wiring Repairs or Connector Repairs .

Is the repair complete?

Go to Step 15

--

10

Test the windshield wiper motor high speed circuit for a short to ground. Refer to Circuit Testing and Wiring Repairs .

Did you find and correct the condition?

Go to Step 15

Go to Step 11

11

Inspect for poor connections at the windshield 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 15

Go to Step 12

12

Replace the windshield wiper/washer switch. Refer to Turn Signal Multifunction Switch Replacement .

Is the repair complete?

Go to Step 15

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13

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

Did you find and correct the condition?

Go to Step 15

Go to Step 14

14

Replace the windshield wiper motor. Refer to Windshield Wiper Motor Replacement .

Is the repair complete?

Go to Step 15

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15

Operate the system in order to verify the repair.

Did you correct the condition?

System OK

Go to Step 3