GM Service Manual Online
For 1990-2009 cars only

Step

Action

Value(s)

Yes

No

1

Was the Wiper/Washer System Check performed?

--

Go to Step 2

Go to Diagnostic System Check - Wiper/Washer

2

  1. Turn the ignition switch to RUN.
  2. Turn the wiper switch to LO.
  3. Measure the voltage by backprobing from the wiper/washer switch connector C203, terminal B to ground, using aJ 39200 .

Is the measurement greater than the specified value?

1.0 V

Go to Step 6

Go to Step 3

3

Check for a poor connection at connector C203, or for an open circuit in the pigtail to the wiper/washer switch.

Is a poor connection or an open circuit present?

--

Go to Step 5

Go to Step 4

4

Replace the wiper/washer switch. Refer to Turn Signal and Multifunction Switch Assembly - Off Vehicle .

Is the replacement complete?

--

Go to Diagnostic System Check - Wiper/Washer

--

5

Repair the poor connection or the open circuit conditon.

Is the repair complete?

--

Go to Diagnostic System Check - Wiper/Washer

--

6

  1. Disconnect the wiper motor connector.
  2. Measure the voltage from the wiper motor connector, terminal D to ground, using a J 39200 .

Is the measurement greater than the specified value?

1.0 V

Go to Step 8

Go to Step 7

7

Repair the open circuit in CKT 113.

Is the repair complete?

--

Go to Diagnostic System Check - Wiper/Washer

--

8

Measure the voltage by backprobing from the wiper/washer switch connector C203, terminal A to ground, using a J 39200 .

Is the measurement greater than the specified value?

1.0 V

Go to Step 11

Go to Step 9

9

Check for a poor connection at connector C203, or for an open circuit in the pigtail to the wiper/washer switch.

Is a poor connection or open circuit present?

--

Go to Step 5

Go to Step 10

10

Replace the wiper/washer switch. Refer to Turn Signal and Multifunction Switch Assembly - Off Vehicle .

Is the replacement complete?

--

Go to Diagnostic System Check - Wiper/Washer

--

11

Measure the voltage from the wiper motor connector, terminal E to ground, using a J 39200 .

Is the measurement greater than the specified value?

1.0 V

Go to Step 13

Go to Step 12

12

Repair the open circuit in CKT 112.

Is the repair complete?

--

Go to Diagnostic System Check - Wiper/Washer

--

13

Replace the wiper motor cover. Refer to Wiper Motor Cover Replacement .

Is the replacement complete?

--

Go to Diagnostic System Check - Wiper/Washer

--