GM Service Manual Online
For 1990-2009 cars only

Step

Action

Value(s)

Yes

No

1

  1. Turn the ignition switch to the RUN position.
  2. With a test light, probe the wiper/washer provision connector, C207 from cavity E to ground. Refer to Probing Electrical Connectors in Wiring Systems.

Does the test light illuminate?

--

Go to Step 3

Go to Step 2

2

Repair the open in CKT 143 (YEL) between the instrument panel fuse block, cavity G1 and the wiper/washer provision connector, cavity E.

Did you complete the repair?

--

System OK

--

3

  1. Use a J 39200 DMM in order to backprobe the windshield wiper pulse control module from cavity D to B+.
  2. Measure the voltage.

Is the voltage greater than the specified value?

10.0 V

Go to Step 5

Go to Step 4

4

Repair the open in CKT 250 (BLK) between the windshield wiper pulse control module, cavity D and G200.

Did you complete the repair?

--

System OK

--

5

  1. Use a J 39200 DMM in order to backprobe the wiper/washer switch pigtail from cavity D to B+.
  2. Measure the voltage.

Is the voltage greater than the specified value?

10.0 V

Go to Step 7

Go to Step 6

6

Replace the windshield wiper pulse control module.

Did you complete the repair?

--

System OK

--

7

Replace the wiper/washer switch. Refer to Windshield Wiper and Washer Switch Assembly - Disassemble - Off Vehicle in Steering Wheel and Column-Tilt.

Did you complete the repair?

--

System OK

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