Fog Lamps Inoperative - One. Buick Regal (China) 2000

For 1990-2009 cars only

Makes 🢒 Buick 🢒 2000 🢒 Regal (China) 🢒 Body and Accessories 🢒 Lighting Systems 🢒 Fog Lamps Inoperative - One

Fog Lamps Inoperative - One Front

Step

Action

Value(s)

Yes

Turn the headlamp switch to the HEAD position.
Turn the headlamp dimmer switch to the LOW position.
Turn the front fog lamp switch to the ON position.
Using a test light, backprobe between terminal A of the inoperable fog lamp harness connector and ground.

Does the test light illuminate?

•	For the left side, inspect for a poor connection or an open in circuit 34 between the underhood accessory wiring junction block harness connector C3 terminal A6 and the left fog lamp connector terminal A.

•	For the right side, inspect for a poor connection or an open in circuit 34 between the underhood accessory wiring junction block harness connector C3 terminal B6 and the right fog lamp connector terminal A.

If the circuit is OK, replace the underhood accessory wiring junction block. Refer to Underhood Electrical Center or Junction Block Replacement in Wiring Systems.

Is the repair complete?

Using a test light, backprobe between the inoperable fog lamp harness connector terminal A and terminal B.

Does the test light illuminate?

Repair a poor connection or an open in circuit 1350 between the fog lamp harness connector terminal B and G101.

Is the repair complete?

Replace the faulty fog lamp. Refer to Front Fog Lamp Replacement .

Is the repair complete?

Step	Action	Value(s)	Yes	No
1	Turn the headlamp switch to the HEAD position. Turn the headlamp dimmer switch to the LOW position. Turn the rear fog lamp switch to the ON position. Using a test light, backprobe between terminal A of the inoperable fog lamp harness connector and ground. Does the test light illuminate?	--	Go to Step 3	Go to Step 2
2	Repair a poor connection or an open in circuit 122 between S927 and the inoperable rear fog lamp connector terminal A. Is the repair complete?	--	Go to Diagnostic System Check - Lighting Systems	--
3	Using a test light, backprobe between the inoperable fog lamp harness connector terminal A and terminal B. Does the test light illuminate?	--	Go to Step 5	Go to Step 4
4	Repair a poor connection or an open in circuit 350 between the rear fog lamp harness connector terminal B and G402. Is the repair complete?	--	Go to Diagnostic System Check - Lighting Systems	--
5	Replace the faulty fog lamp. Refer to Rear Fog Lamp Bulb Replacement . Is the repair complete?	--	Go to Diagnostic System Check - Lighting Systems	--