GM Service Manual Online
For 1990-2009 cars only

Fog Lamp Indicator Inoperative Domestic

Step

Action

Value(s)

Yes

No

1

Was the entire Fog Lights System Check performed?

--

Go to Step 2

Go to Fog Lights System Check

2

  1. Turn the headlamp switch to the HEAD position.
  2. Turn the headlamp dimmer switch to the LOW position.
  3. Turn the fog lamp switch to the ON position.

Is the vehicle a Pontiac?

--

Go to Step 3

Go to Step 4

3

Connect a test light between the foglamp switch connector terminals F and G.

Does the test light illuminate?

--

Go to Step 5

Go to Step 6

4

Connect a test light between the foglamp switch connector terminal A and B+.

Does the test light illuminate?

--

Go to Step 5

Go to Step 9

5

Replace the foglamp switch. Refer to Fog Lamp Switch Replacement .

Is the repair complete?

--

Go to Step 10

--

6

Connect a test light between the foglamp switch connector terminal F and ground.

Does the test light illuminate?

--

Go to Step 7

Go to Step 8

7

Repair a poor connection or open in circuit 650.

Is the repair complete?

--

Go to Step 10

--

8

Repair a poor connection or open in circuit 8.

Is the repair complete?

--

Go to Step 10

--

9

Repair the poor connection or open in circuit 11.

Is the repair complete?

--

Go to Step 10

--

10

  1. Turn the ignition switch to the OFF position.
  2. Reconnect all connectors/components removed.

Have all the repairs been made?

--

Go to Fog Lights System Check

--

Fog Lamp Indicator Inoperative Europe

Step

Action

Value(s)

Yes

No

1

Was the entire Fog Lights System Check performed?

--

Go to Step 2

Go to Fog Lights System Check

2

  1. Turn the headlamp switch to the HEAD position.
  2. Turn the headlamp dimmer switch to the LOW position.
  3. Turn the fog lamp switch to the ON position.
  4. Using a test light, backprobe the fog lamp switch harness connector terminal A and ground.

Does the test light illuminate?

--

Go to Step 3

Go to Step 4

3

Replace the fog lamp switch. Refer to Fog Lamp Switch Replacement .

Is the repair compete?

--

Go to Step 5

--

4

Repair a poor connector or open in circuit 122.

Is the repair compete?

--

Go to Step 5

--

5

  1. Turn the ignition switch to the OFF position.
  2. Reconnect all components/connectors removed.

Have all the repairs been made?

--

Go to Fog Lights System Check

--