LEMON Manuals: Even more car manuals for everyone
Home >> Dodge and Ram >> 2003 >> Durango Base, 5.9 Z, RWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 86 (Lamps & Lighting - Exterior) >> Lamps/Lighting - Exterior >> Diagnosis And Testing >> Diagnosis And Testing - Exterior Lamps >> Headlamps

Diagnosis And Testing - Exterior Lamps: Headlamps

WARNING: This page is about a different car, the 2004 Dodge Dakota. However, it is still accessible from the selected car via links, so may be relevant.
CONDITION

CONDITION POSSIBLE CAUSES CORRECTION
HEADLAMPS ARE DIM WITH ENGINE IDLING OR IGNITION TURNED OFF
  1. Loose or corroded battery cables.
  2. Loose or worn generator 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.
  7. Both headlamp bulbs faulty.
  1. Clean and secure battery cable clamps and posts.
  2. Adjust or replace generator drive belt.
  3. Test and repair charging system.
  4. Test battery state-of-charge.
  5. Load test battery.
  6. Test for voltage drop across Z1-ground locations.
  7. Replace both headlamp bulbs.
HEADLAMP BULBS BURN OUT FREQUENTLY
  1. Charging system output too high.
  2. Loose or corroded terminals or splices in circuit.
  1. Test and repair charging system.
  2. Inspect and repair all connectors and splices.
HEADLAMPS ARE DIM WITH ENGINE RUNNING ABOVE IDLE (1)
  1. Charging system output too low.
  2. Poor lighting circuit Z1-ground.
  3. High resistance in headlamp circuit.
  4. Both headlamp bulbs faulty.
  1. Test and repair charging system.
  2. Test for voltage drop across Z1-ground locations.
  3. Test amperage draw of headlamp circuit.
  4. Replace both headlamp bulbs.
HEADLAMPS FLASH RANDOMLY
  1. Poor lighting circuit Z1-ground.
  2. High resistance in headlamp circuit.
  3. Faulty headlamps switch circuit breaker.
  4. Loose or corroded terminals or splices in circuit.
  1. Test for voltage drop across Z1-ground locations.
  2. Test amperage draw of headlamp circuit. Should not exceed 30 amps.
  3. Replace headlamp switch.
  4. 4. Inspect and repair all connectors and splices.
HEADLAMPS (HIGH & LOW) DO NOT ILLUMINATE
  1. No voltage at either headlamp.
  2. No ground for high and low beam circuit.
  3. Headlamp bulb(s) faulty.
  4. Faulty headlamp switch.
  5. Faulty headlamp dimmer (Multifunction) switch.
  6. Broken connector terminal or wire splice in headlamp circuit.
  7. Faulty CTM
  1. Voltage should always be present. Trace short circuit and replace BOTH headlamp fuses. Check wiring circuit from Right headlamp fuse to headlamp. (Repeat for Left side)
  2. Ground should always be present according to switch position. Check ground at headlamp switch. Check wiring circuit from headlamp switch to Multifunction switch. Check headlamp switch and Multifunction switch continuity. Repair circuit ground.
  3. Replace bulb(s).
  4. Replace headlamp switch.
  5. Replace Multifunction switch.
  6. Repair connector terminal or wire splice.
  7. Replace CTM
HEADLAMPS (LOW BEAM) DO NOT ILLUMINATE.
  1. No ground for low beam circuit.
  2. Faulty CTM
  1. Ground should be present according to Multifunction switch position. Check wiring circuit from Multifunction switch to headlamp. Trace open circuit in wiring and repair. Check Multifunction Switch for continuity.
  2. Replace CTM
HEADLAMPS (HIGH BEAM) DO NOT ILLUMINATE.
  1. No ground for high beam circuit.
  2. Faulty CTM
  1. Ground should be present according to Multifunction switch position. Check wiring circuit from Multifunction switch to headlamp. Trace open circuit in wiring and repair. Check Multifunction Switch for continuity.
  2. Replace CTM
HEADLAMPS (LOW BEAM) ALWAYS ILLUMINATE AND CAN NOT BE SHUTOFF.(IF HEADLAMP DELAY IS SELECTED, THE HEADLAMPS WILL REMAIN ON FOR 60 SECONDS)
  1. Low beam circuit from bulb to Multifunction switch is shorted to voltage.
  2. Faulty CTM
  1. Ground should be present according to Multifunction switch position. Check wiring circuit from Multifunction switch to headlamp. Trace short circuit in wiring and repair.
  2. Replace CTM
HEADLAMPS (HIGH BEAM) ALWAYS ILLUMINATE AND CAN NOT BE SHUT OFF.
  1. High beam circuit from bulb to Multifunction switch is shorted to voltage.
  2. Faulty CTM
  1. Ground should be present according to Multifunction switch position. Check wiring circuit from Multifunction switch to headlamp. Trace short circuit in wiring and repair.
  2. Replace CTM
HEADLAMP SWITCH OFF HEADLAMPS AND HIGHBEAM INDICATOR REMAIN ON AND ARE DIM.
  1. Headlamp switch feed circuit shorted to ground.
  2. Faulty CTM
  1. Check wiring circuit from right headlamp fuse to headlamp. Repeat for left side. Trace short circuit in wiring and repair.
  2. Replace CTM
HEADLAMP SWITCH ON (LOW BEAMS ON), ONE LOW BEAM ON AND BOTH HIGH BEAMS DIM.
  1. Headlamp feed circuit shorted to voltage.
  2. Faulty CTM
  1. Check wiring circuit from right headlamp fuse to headlamp. Repeat for left side. Trace short circuit in wiring and repair.
  2. Replace CTM
HEADLAMP SWITCH ON (HIGH BEAMS ON), ONE HIGH BEAM ON AND BOTH LOW BEAMS DIM.
  1. Headlamp feed circuit shorted to voltage.
  2. Faulty CTM
  1. Check wiring circuit from right headlamp fuse to headlamp. Repeat for left side. Trace short circuit in wiring and repair.
  2. Replace CTM
HEADLAMP SWITCH ON, ONE HEADLAMP FILAMENT WILL BE AT FULL INTENSITY AND ALL OTHER FILAMENTS ARE ON AND DIM.
  1. Faulty headlamp fuse.
  2. Open circuit from headlamp fuse to headlamp.
  3. Faulty CTM.
  1. Trace short circuit and replace fuse.
  2. Repair open headlamp circuit.
  3. Replace CTM.
  1. HEADLAMPS STAY ON WITH KEY OUT - DRLM EQUIPPED VEHICLES (IF HEADLAMP DELAY IS SELECTED, THE HEADLAMPS WILL REMAIN ON FOR 60 SECONDS).
  1. Faulty CTM
  1. Replace CTM.
(1) Canada vehicles must have lamps ON.
scientia non olet · About LEMON Manuals