For 1990-2009 cars

## Fog Lamps Inoperative - All Oldsmobile

Step | Action | Value(s) | Yes | No
--- | --- | --- | --- | ---
1 | Did you perform the entire Fog lights System Check? | -- | Go to Step 2 | Go to Fog Lights System Check
2 |

1. Place the headlamp switch in the PARK position.
2. Disconnect the fog lamp switch connector.
3. Connect a DMM from the fog lamp switch connector cavity A (BRN) to ground.

Is the voltage within the specified range?

10-15V

Go to Step 3

Go to Step 9

3 | Connect a DMM from the fog lamp switch connector cavity A (BRN) to cavity B (BLK) Is the voltage within the specified range? | 10-15V | Go to Step 4 | Go to Step 10
4 |

1. Remove the fog lamps relay from the RH IP fuse block.
2. Reconnect the fog lamp switch connector.
3. Turn the fog lamp switch to the ON position.
4. Connect a DMM from the fog lamps relay connector cavity 85 (YEL) to ground.

Is the voltage within the specified range?

10-15V

Go to Step 5

Go to Step 11

5 | Connect a DMM from the fog lamps relay connector cavity 30 (ORN) to ground. Is the voltage within the specified range? | 10-15V | Go to Step 6 | Go to Step 13
6 | Connect a fused jumper from the fog lamps relay connector cavity 30 (ORN) to cavity 87 (PPL) Do the fog lamps turn on? | -- | Go to Step 7 | Go to Step 14
7 |

1. Disconnect the lamp control module (LCM) connector C2.
2. Reinstall the fog lamp relay.
3. Turn the fog lamp switch to the ON position.
4. Connect a fused jumper between the LCM connector C2 cavity A4 (DK GRN/WHT) and ground.

Do the fog lamps turn on?

--

Go to Step 8

Go to Step 15

8 | Replace the LCM. Is the repair complete? | -- | Go to Fog Lights System Check | --
9 | Repair the open in CKT 9 (BRN) between S204 and the fog lamp switch. Refer to Wiring Repairs in Wiring Systems. Is the repair complete? | -- | Go to Fog Lights System Check | --
10 | Repair the open in CKT 1250 (BLK) between S213 and the fog lamp switch. Refer to Wiring Repairs in Wiring Systems. Is the repair complete? | -- | Go to Fog Lights System Check | --
11 | Inspect CKT 317 (YEL) for an open or short to ground. Refer to Testing for Continuity or Testing for Short to Ground in Wiring Systems. Is CKT 317 (YEL) OK? | -- | Go to Step 12 | Go to Step 16
12 | Replace the fog lamp switch. Refer to Instrument Cluster Trim Panel Replacement in Instrument Panel, Gauges and Console. Is the repair complete? | -- | Go to Fog Lights System Check | --
13 | Repair the open in CKT 1440 (ORN). Refer to Wiring Repairs in Wiring Systems. Is the repair complete? | -- | Go to Fog Lights System Check | --
14 | Repair the open or short to ground in CKT 34 (PPL). Refer to Wiring Repairs in Wiring Systems. Is the repair complete? | -- | Go to Fog Lights System Check | --
15 | Inspect CKT 1317 (DK GRN/WHT) for an open. Refer to Testing for Continuity in Wiring Systems. Is CKT 1317 (DK GRN/WHT) OK? | -- | Go to Step 17 | Go to Step 16
16 | Repair the suspect wiring. Refer to Wiring Repairs in Wiring Systems. Is the repair complete? | -- | Go to Fog Lights System Check | --
17 | Replace the fog lamps relay. Is the repair complete? | -- | Go to Fog Lights System Check | --

## Fog Lamps Inoperative - All Pontiac

Step | Action | Value(s) | Yes | No
--- | --- | --- | --- | ---
1 | Did you perform the entire Fog lights System Check? | -- | Go to Step 2 | Go to Fog Lights System Check
2 |

1. Turn the headlamp switch to the PARK position.
2. Disconnect the fog lamp switch connector.
3. Connect a DMM from the fog lamp switch connector cavity 2 (BRN) to ground.

Is the voltage within the specified range?

10-15V

Go to Step 3

Go to Step 8

3 |

1. Remove the fog lamps relay from the RH IP fuse block.
2. Reconnect the fog lamp switch connector.
3. Turn the fog lamp switch to the ON position.
4. Connect a DMM from the fog lamps relay connector cavity 85 (YEL) to ground.

Is the voltage within the specified range?

10-15V

Go to Step 4

Go to Step 9

4 | Connect a DMM from the fog lamps relay connector cavity 30 (ORN) to ground. Is the voltage within the specified range? | 10-15V | Go to Step 5 | Go to Step 10
5 | Connect a fused jumper between the fog lamps relay connector cavity 30 (ORN) and cavity 87 (PPL). Do the fog lamps turn on? | -- | Go to Step 6 | Go to Step 11
6 |

1. Disconnect the lamp control module (LCM) connector C2.
2. Reinstall the fog lamps relay.
3. Turn the fog lamp switch to the ON position.
4. Connect a fused jumper between the LCM connector C2 cavity A4 (DK GRN/WHT) and ground.

Do the fog lamps turn on?

--

Go to Step 7

Go to Step 12

7 | Replace the LCM. Is the repair complete? | -- | Go to Fog Lights System Check | --
8 | Repair the open in CKT 9 (BRN) between S204 and the fog lamp switch. Refer to Wiring Repairs in Wiring Systems. Is the repair complete? | -- | Go to Fog Lights System Check | --
9 | Inspect CKT 317 (YEL) for an open or short to ground. Refer to Testing for Continuity or Testing for Short to Ground in Wiring Systems. Is CKT 317 (YEL) OK? | -- | Go to Step 13 | Go to Step 14
10 | Repair the open or short to ground in CKT 1440 (ORN). Refer to Wiring Repairs in Wiring Systems. Is the repair complete? | -- | Go to Fog Lights System Check | --
11 | Repair the open or short to ground in CKT 34 (PPL). Refer to Wiring Repairs in Wiring Systems. Is the repair complete? | -- | Go to Fog Lights System Check | --
12 | Inspect CKT 1317 (DK GRN/WHT) for an open. Refer to Testing for Continuity in Wiring Systems. Is CKT 1317 (DK GRN/WHT) OK? | -- | Go to Step 15 | Go to Step 14
13 | Replace the fog lamp switch. Refer to Instrument Cluster Trim Panel Replacement in Instrument Panel, Gauges and Console. Is the repair complete? | -- | Go to Fog Lights System Check | --
14 | Repair the suspect wiring. Refer to Wiring Repairs in Wiring Systems. Is the repair complete? | -- | Go to Fog Lights System Check | --
15 | Replace the fog lamps relay. Is the repair complete? | -- | Go to Fog Lights System Check | --