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 headlamps on.
  2. Turn the headlamp dimmer switch to the low beam position.
  3. Turn the fog lamps on.

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 conectors/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 headlamps on.
  2. Turn the headlamp dimmer switch to the low beam position.
  3. Turn the fog lamps on.
  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

--