GM Service Manual Online
For 1990-2009 cars only

Step

Action

Values

Yes

No

1

Inspect fuse F7.

Is the fuse open?

--

Go to Step 2

Go to Step 3

2

Replace fuse F7.

Did you complete the replacement?

--

System OK

--

3

  1. Remove the controller.
  2. Measure the voltage between connectors A5 and A14.

Is the voltage within the specified range?

11-14 V

Go to Step 4

Go to Step 5

4

  1. Inspect the controller for damage.
  2. Replace the controller if it is damaged.

Did you find and correct the condition?

--

System OK

--

5

Measure the voltage between terminal A1 and round.

Is the voltage equal to the specified valve?

0 V

Go to Step 6

Go to Step 7

6

  1. Inspect the wiring harness between fuse F7 and the terminal A5 for damage.
  2. Replace the wiring harness if it is damaged.

Did you find and correct the condition?

--

System OK

--

7

  1. Inspect the wiring harness between terminal A14 and ground G203 for damage.
  2. Repair the wiring harness, or ground connection as required.

Did you find and correct the condition?

--

System OK

--