Dodge Durango (DN). Manual — part 300

LAMPS

TABLE OF CONTENTS

page

page

SAFETY PRECAUTIONS . . . . . . . . . . . . . . . . . . . . . 1
LAMP DIAGNOSIS . . . . . . . . . . . . . . . . . . . . . . . . . 2
HEADLAMP ALIGNMENT . . . . . . . . . . . . . . . . . . . . 6
LAMP BULB SERVICE . . . . . . . . . . . . . . . . . . . . . 10

LAMP SERVICE. . . . . . . . . . . . . . . . . . . . . . . . . . . 15
LAMP SYSTEMS . . . . . . . . . . . . . . . . . . . . . . . . . . 21
BULB APPLICATION . . . . . . . . . . . . . . . . . . . . . . . 22

SAFETY PRECAUTIONS

TABLE OF CONTENTS

page

SERVICE PROCEDURES

SAFETY PRECAUTIONS . . . . . . . . . . . . . . . . . . . . 1

SERVICE PROCEDURES

SAFETY PRECAUTIONS

WARNING: EYE PROTECTION SHOULD BE USED
WHEN SERVICING GLASS COMPONENTS. PER-
SONAL INJURY CAN RESULT.

CAUTION: Do not touch the glass of halogen bulbs
with fingers or other possibly oily surface, reduced
bulb life will result.

Do not use bulbs with higher candle power than

indicated in the Bulb Application table at the end of

this group. Damage to lamp and/or Daytime Run-
ning Lamp Module can result.

Do not use fuses, circuit breakers or relays hav-

ing greater amperage value than indicated on the
fuse panel or in the Owners Manual.

When it is necessary to remove components to ser-

vice another, it should not be necessary to apply
excessive force or bend a component to remove it.
Before damaging a trim component, verify hidden
fasteners or captured edges are not holding the com-
ponent in place.

DN

LAMPS

8L - 1

LAMP DIAGNOSIS

TABLE OF CONTENTS

page

DIAGNOSIS AND TESTING

SYSTEM DIAGNOSIS . . . . . . . . . . . . . . . . . . . . . . 2

DIAGNOSIS AND TESTING

SYSTEM DIAGNOSIS

A good ground is necessary for proper lighting

operation. Grounding is provided by the lamp socket

when it comes in contact with the metal body, or
through a separate ground wire.

Always begin any diagnosis by testing all of the

fuses and circuit breakers in the system. Refer to
Group 8W, Wiring Diagrams.

HEADLAMP

CONDITION

POSSIBLE CAUSES

CORRECTION

HEADLAMPS ARE DIM
WITH ENGINE IDLING

1. Loose or corroded battery cables.

1. Clean and secure battery cable clamps
and posts.

OR IGNITION TURNED
OFF

2. Loose or worn generator drive
belt.

2. Adjust or replace generator drive belt.

3. Charging system output too low.

3. Test and repair charging system, refer to
Group 8A,

4. Battery has insufficient charge.

4. Test battery state-of -charge
, refer to Group 8A.

5. Battery is sulfated or shorted.

5. Load test battery, refer to Group 8A.

6. Poor lighting circuit Z3-ground.

6. Test for voltage drop across Z3-ground
locations, refer to Group 8W.

7. Both headlamp bulbs defective.

7. Replace both headlamp bulbs.

HEADLAMP BULBS BURN
OUT

1. Charging system output too high.

1. Test and repair charging system, refer to
Group 8A.

FREQUENTLY

2. Loose or corroded terminals or
splices in circuit.

2. Inspect and repair all connectors and
splices, refer to Group 8W.

HEADLAMPS ARE DIM
WITH ENGINE RUNNING

1. Charging system output too low.

1. Test and repair charging system, refer to
Group 8A.

ABOVE IDLE*

2. Poor lighting circuit Z3-ground.

2. Test for voltage drop across Z3-ground
locations, refer to Group 8W.

3. High resistance in headlamp
circuit.

3. Test amperage draw of headlamp circuit.

4. Both headlamp bulbs defective.

4. Replace both headlamp bulbs.

HEADLAMPS FLASH
RANDOMLY

1. Poor lighting circuit Z3-ground.

1. Test for voltage drop across Z3-ground
locations, refer to Group 8W.

2. High resistance in headlamp
circuit.

2. Test amperage draw of headlamp circuit.

3. Loose or corroded terminals or
splices in circuit.

3. Inspect and repair all connectors and
splices, refer to Group 8W.

8L - 2

LAMPS

DN

CONDITION

POSSIBLE CAUSES

CORRECTION

HEADLAMPS (HIGH &
LOW) DO NOT
ILLUMINATE

1. No voltage at either headlamp.

1. Voltage should always be present. Trace
short circuit and replace BOTH headlamp
fuses. Refer to Group 8W. Check wiring
circuit from Right headlamp fuse to
headlamp. (Repeat for Left side)

2. No ground for high and low beam
circuit.

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, refer to Group 8W.

3. Headlamp bulb(s) defective.

3. Replace bulb(s).

4. Faulty headlamp switch.

4. Replace headlamp switch.

5. Faulty headlamp dimmer
(Multifunction) switch.

5. Replace Multifunction switch.

6. Broken connector terminal or wire
splice in headlamp circuit.

6. Repair connector terminal or wire splice.

HEADLAMPS (LOW
BEAM) DO NOT
ILLUMINATE.

1. No ground for low beam circuit.

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. Refer to Group 8W.
Check Multifunction Switch for continuity.

HEADLAMPS (HIGH
BEAM) DO NOT
ILLUMINATE.

1. No ground for high beam circuit.

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. Refer to Group 8W.
Check Multifunction Switch for continuity.

HEADLAMPS (LOW
BEAM) ALWAYS
ILLUMINATE AND CAN
NOT BE SHUT OFF.

1. Low beam circuit from bulb to
Multifunction switch is shorted to
ground.

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. Refer to Group 8W.

HEADLAMPS (HIGH
BEAM) ALWAYS
ILLUMINATE AND CAN
NOT BE SHUT OFF.

1. High beam circuit from bulb to
Multifunction switch is shorted to
ground.

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. Refer to Group 8W.

HEADLAMP SWITCH OFF
HEADLAMPS AND
HIGHBEAM INDICATOR
REMAIN ON AND ARE
DIM.

1. Headlamp switch feed circuit
shorted to ground.

1. Check wiring circuit from right headlamp
fuse to headlamp. Repeat for left side.
Trace short circuit in wiring and repair.
Refer to Group W.

DN

LAMPS

8L - 3

DIAGNOSIS AND TESTING (Continued)

CONDITION

POSSIBLE CAUSES

CORRECTION

HEADLAMP SWITCH ON
(LOW BEAMS ON), ONE
LOW BEAM ON AND
BOTH HIGH BEAMS DIM.

1. Headlamp feed circuit shorted to
ground.

1. Check wiring circuit from right headlamp
fuse to headlamp. Repeat for left side.
Trace short circuit in wiring and repair.
Refer to Group W.

HEADLAMP SWITCH ON
(HIGH BEAMS ON), ONE
HIGH BEAM ON AND
BOTH LOW BEAMS DIM.

1. Headlamp feed circuit shorted to
ground.

1. Check wiring circuit from right headlamp
fuse to headlamp. Repeat for left side.
Trace short circuit in wiring and repair.
Refer to Group W.

HEADLAMP SWITCH ON,
ONE HEADLAMP
FILAMENT WILL BE AT
FULL INTENSITY AND ALL
OTHER FILAMENTS ARE
ON AND DIM.

1. Blown headlamp fuse.

1. Trace short circuit and replace fuse.
Refer to Group 8W.

2. Open circuit from headlamp fuse
to headlamp.

2. Repair open headlamp circuit, refer to
Group 8W.

1. HEADLAMPS STAY ON
WITH KEY OUT (DRLM
EQUIPPED VEHICLES).

1. Failed DRLM

1. Replace DRLM.

*Canada vehicles must have lamps ON.

FOG LAMP

CONDITION

POSSIBLE CAUSES

CORRECTION

FOG LAMPS ARE DIM
WITH ENGINE IDLING OR
IGNITION TURNED OFF.

1. Loose or corroded battery cables.

1. Clean and secure battery cable clamps
and posts.

2. Loose or worn generator drive
belt.

2. Adjust or replace generator drive belt.

3. Charging system output too low.

3. Test and repair charging system. Refer to
Group 8A,

4. Battery has insufficient charge.

4. Test battery state-of -charge. Refer to
Group 8A.

5. Battery is sulfated or shorted.

5. Load test battery. Refer to Group 8A.

6. Poor lighting circuit Z3-ground.

6. Test for voltage drop across Z3-ground
locations. Refer to Group 8W.

FOG LAMP BULBS BURN
OUT FREQUENTLY

1. Charging system output too high.

1. Test and repair charging system. Refer to
Group 8A.

2. Loose or corroded terminals or
splices in circuit.

2. Inspect and repair all connectors and
splices. Refer to Group 8W.

FOG LAMPS ARE DIM
WITH ENGINE RUNNING
ABOVE IDLE

1. Charging system output too low.

1. Test and repair charging system. Refer to
Group 8A.

2. Poor lighting circuit Z3-ground.

2. Test for voltage drop across Z3-ground
locations. Refer to Group 8W.

3. High resistance in fog lamp circuit.

3. Test amperage draw of fog lamp circuit.

8L - 4

LAMPS

DN

DIAGNOSIS AND TESTING (Continued)