Dodge 2001 Ram 1500 Owner's Manual page 607

8L - 10 LAMPS/LIGHTING - EXTERIOR
FOG LAMP (Continued)
CONDITION
FOG LAMPS ARE DIM
WITH ENGINE RUNNING
ABOVE IDLE
FOG LAMPS FLASH
RANDOMLY
FOG LAMPS DO NOT
ILLUMINATE
FOG LAMPS ARE
INOPERATIVE AND FOG
LAMP INDICATOR LIGHT
ALWAYS STAYS ON.
FOG LAMPS ARE
INOPERATIVE AND FOG
LAMP INDICATOR LIGHT
IS ILLUMINATED.
PARK LAMPS ARE
INOPERATIVE. FOG LAMP
INDICATOR IS ON WHEN
ALL SWITCHES ARE OFF
AND FUNCTIONS
OPPOSITE TO FOG
LAMPS.
PARK LAMPS ARE
INOPERATIVE. FOG LAMP
INDICATOR FUNCTIONS
OPPOSITE TO FOG
LAMPS.
*Canada vehicles use Daytime Running Lamps (DRL).
POSSIBLE CAUSES
1. Charging system output too low.
2. Poor lighting circuit Z33-ground.
3. High resistance in fog lamp circuit.
1. Poor lighting circuit Z33-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 Z33-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.
1. Fog lamp/DRL* feed shorted to
ground.
1. Fog lamp/DRL* fuse defective.
2. Open circuit from fog lamp fuse to
fog lamp.
1. Park lamp feed is shorted.
1. Park lamp fuse is defective.
2. Open circuit from park lamp fuse
to headlamp switch.
CORRECTION
1. Test and repair charging system.
2. Test for voltage drop across Z33-ground
locations.
3. Test amperage draw of fog lamp circuit.
1. Test for voltage drop across Z33-ground
locations.
2. Test amperage draw of fog lamp circuit.
3. Replace fog lamp switch.
4. Inspect and repair all connectors and
splices.
1.Trace short and replace fuse.
2. Repair circuit ground.
3. Replace fog lamp switch.
4. Repair connector terminal or wire splice.
5. Replace bulb.
1. Check wiring circuit from fog lamp/DRL*
fuse to fog lamp. Trace short circuit in
wiring and repair.
1. Trace short circuit and replace fuse.
2. Check wiring circuit from fog lamp/DRL*
fuse to fog lamp. Trace open circuit in
wiring and repair.
1. Check wiring circuit from park lamp fuse
to headlamp switch. Trace short circuit in
wiring and repair.
1. Trace short circuit and replace fuse.
2. Check wiring circuit from park lamp fuse
to headlamp switch. Trace open circuit in
wiring and repair.
BR/BE