Fog Lamps Do Not Work On Either Side - Daewoo Nubira Owner's Manual

9B – 18ILIGHTING SYSTEMS
Diagnostic Aids
The front fog lamp switch is powered by the headlamp switch, so the fog lamps may not operate if the headlamps or tail-
lamps will not turn ON.
Step
1 Check the headlamps and the exterior lamps.
Are the headlamps and the exterior lamps working?
2 Repair the headlamps and exterior lamp systems.
Is the repair complete?
3 Check fuse EF20.
Is fuse EF20 blown?
4
1. Check for a short circuit and repair if neces-
sary.
2. Replace fuse EF20.
Is the repair complete?
5 Use a voltmeter to check if battery voltage is avail-
able at fuse EF20.
Is the voltage equal to the specified value?
6 Repair the power supply to fuse EF20.
Is the repair complete?
7
1. Disconnect the connectors at the front fog
lamps.
2. Use an ohmmeter to check the resistance be-
tween ground and the BLK wire at the fog
lamps.
Does the ohmmeter indicate the specified value?
8 Repair the open ground circuit for the front fog
lamps.
Is the repair complete?
9
1. With the fog lamps disconnected, turn the front
fog lamps to the ON position.
2. Turn the headlamps ON.
3. Check the voltage at the PPL wire at the front
fog lamp connectors.
Is the voltage equal to the specified value?
10 Replace the fog lamp bulbs.
Is the repair complete?
11
1. Temporarily substitute the exterior illumination
relay (taillamp relay) in place of the front fog
lamp relay.
2. Turn the headlamps ON.
3. Turn the fog lamps.
Do the front fog lamps work with the substituted
relay?
12
1. Return the substituted relay to its original posi-
tion.
2. Replace the front fog lamp relay.
Is the repair complete?
FOG LAMPS
Fog Lamps Do NotWork on Either Side
Action Value(s) Yes
Go to Step 3
Go to Step 3
Go to Step 5
System OK
11–14 v Go to Step 7
System OK
[ 0 W
Go to Step 9
System OK
11–14 v Go to Step 10
System OK
Go to Step 12
System OK
No
Go to Step 2
Go to Step 4
Go to Step 6
Go to Step 8
Go to Step 11
Go to Step 13
DAEWOO V–121 BL4