Chrysler 1998 Voyager Service Manual page 481

NS/GS
DIAGNOSIS AND TESTING (Continued)
CONDITION
FOG LAMPS ARE DIM WITH
ENGINE IDLING OR IGNITION
TURNED OFF.
FOG LAMP BULBS BURN OUT
FREQUENTLY
FOG LAMPS ARE DIM WITH
ENGINE RUNNING ABOVE IDLE
FOG LAMPS FLASH RANDOMLY
FOG LAMPS DO NOT
ILLUMINATE
FOG LAMP DIAGNOSIS
POSSIBLE CAUSES
1. Loose or corroded battery cables.
2. Loose or worn alternator drive
belt.
3. Charging system output too low.
4. Battery has insufficient charge.
5. Battery is sulfated or shorted.
6. Poor lighting circuit Z1-ground.
1. Charging system output too high.
2. Loose or corroded terminals or
splices in circuit.
1. Charging system output too low.
2. Poor lighting circuit Z1-ground.
3. High resistance in fog lamp
circuit.
1. Poor lighting circuit Z1-ground.
2. High resistance in fog lamp
circuit.
3. Faulty fog lamp switch.
4. Loose or corroded terminals or
splices in circuit.
1. Blown fuse for fog lamp.
2. No Z1-ground at fog lamps.
3. Faulty fog lamp switch.
4. Broken connector terminal or wire
splice in fog lamp circuit.
5. Defective or burned out bulb.
LAMPS
CORRECTION
1. Clean and secure battery cable
clamps and posts.
2. Adjust or replace alternator drive
belt.
3. Test and repair charging system.
Refer to Group 8A,
4. Test battery state-of -charge.
Refer to Group 8A.
5. Load test battery. Refer to Group
8A.
6. Test for voltage drop across
Z1-ground locations. Refer to Group
8W.
1. Test and repair charging system.
Refer to Group 8A.
2. Inspect and repair all connectors
and splices. Refer to Group 8W.
1. Test and repair charging system.
Refer to Group 8A.
2. Test for voltage drop across
Z1-ground locations. Refer to Group
8W.
3. Test amperage draw of fog lamp
circuit.
1. Test for voltage drop across
Z1-ground locations. Refer to Group
8W.
2. Test amperage draw of fog lamp
circuit.
3. Replace fog lamp switch.
4. Inspect and repair all connectors
and splices. Refer to Group 8W.
1. Replace fuse. Refer to Group 8W.
2. Repair circuit ground. Refer to
Group 8W.
3. Replace fog lamp switch.
4. Repair connector terminal or wire
splice.
5. Replace bulb.
8L - 3