Dodge Durango (DN). Manual — part 301

CONDITION

POSSIBLE CAUSES

CORRECTION

FOG LAMPS 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 fog lamp circuit.

2. Test amperage draw of fog lamp circuit.

3. Faulty fog lamp switch.

3. Replace fog lamp switch.

4. Loose or corroded terminals or
splices in circuit.

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

FOG LAMPS DO NOT
ILLUMINATE

1. Blown fuse for fog lamp.

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

2. No Z3-ground at fog lamps.

2. Repair circuit ground. Refer to Group
8W.

3. Faulty fog lamp switch.

3. Replace fog lamp switch.

4. Broken connector terminal or wire
splice in fog lamp circuit.

4. Repair connector terminal or wire splice.

5. Defective or burned out bulb.

5. Replace bulb.

FOG LAMPS ARE
INOPERATIVE AND FOG
LAMP INDICATOR LIGHT
ALWAYS STAYS ON.

1. Fog lamp/DRL* feed shorted to
ground.

1. Check wiring circuit from fog lamp/DRL*
fuse to fog lamp. Trace short circuit in
wiring and repair. Refer to Group 8W.

FOG LAMPS ARE
INOPERATIVE AND FOG
LAMP INDICATOR LIGHT
IS ILLUMINATED.

1. Fog lamp/DRL* fuse defective.

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

2. Open circuit from fog lamp fuse to
fog lamp.

2. Check wiring circuit from fog lamp/DRL*
fuse to fog lamp. Trace open circuit in
wiring and repair. Refer to Group 8W.

PARK LAMPS ARE
INOPERATIVE. FOG LAMP
INDICATOR IS ON WHEN
ALL SWITCHES ARE OFF
AND FUNCTIONS
OPPOSITE TO FOG
LAMPS.

1. Park lamp feed is shorted.

1. Check wiring circuit from park lamp fuse
to headlamp switch. Trace short circuit in
wiring and repair. Refer to Group 8W.

PARK LAMPS ARE
INOPERATIVE. FOG LAMP
INDICATOR FUNCTIONS
OPPOSITE TO FOG
LAMPS.

1. Park lamp fuse is defective.

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

2. Open circuit from park lamp fuse
to headlamp switch.

2. Check wiring circuit from park lamp fuse
to headlamp switch. Trace open circuit in
wiring and repair. Refer to Group 8W.

*Canada vehicles use Daytime Running Lamps (DRL).

DN

LAMPS

8L - 5

DIAGNOSIS AND TESTING (Continued)

HEADLAMP ALIGNMENT

TABLE OF CONTENTS

page

page

SERVICE PROCEDURES

HEADLAMP ALIGNMENT . . . . . . . . . . . . . . . . . . . . 6
LAMP ALIGNMENT SCREEN PREPARATION . . . . . 6
VEHICLE PREPARATION FOR HEADLAMP

ALIGNMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

HEADLAMP ALIGNMENT . . . . . . . . . . . . . . . . . . . . 7
FOG LAMP ALIGNMENT . . . . . . . . . . . . . . . . . . . . 8

SPECIAL TOOLS

HEADLAMP ALIGNMENT . . . . . . . . . . . . . . . . . . . . 9

SERVICE PROCEDURES

HEADLAMP ALIGNMENT

Headlamps can be aligned using the screen method

provided in this section. Alignment Tool C-4466-A or
equivalent can also be used. Refer to instructions
provided with the tool for proper procedures.

LAMP ALIGNMENT SCREEN PREPARATION

(1) Position vehicle on a level surface perpendicu-

lar to a flat wall 7.62 meters (25 ft) away from front
of headlamp lens (Fig. 1).

(2) If necessary, tape a line on the floor 7.62

meters (25 ft) away from and parallel to the wall.

(3) Up 1.27 meters (5 feet) from the floor, tape a

line on the wall at the centerline of the vehicle. Sight
along the centerline of the vehicle (from rear of vehi-
cle forward) to verify accuracy of the line placement.

(4) Rock vehicle side-to-side three times to allow

suspension to stabilize.

(5) Jounce front suspension three times by pushing

downward on front bumper and releasing.

(6) Measure the distance from the center of head-

lamp lens to the floor. Transfer measurement to the
alignment screen (with tape). Use this line for
up/down adjustment reference.

(7) Measure distance from the centerline of the

vehicle to the center of each headlamp being aligned.
Transfer measurements to screen (with tape) to each
side of vehicle centerline. Use these lines for left/
right adjustment reference.

VEHICLE PREPARATION FOR HEADLAMP
ALIGNMENT

(1) Verify headlamp dimmer switch and high beam

indicator operation.

(2) Correct defective components that could hinder

proper headlamp alignment.

(3) Verify proper tire inflation.
(4) Clean headlamp lenses.
(5) Verify that luggage area is not heavily loaded.
(6) Fuel tank should be FULL. Add 2.94 kg (6.5

lbs.) of weight over the fuel tank for each estimated
gallon of missing fuel.

8L - 6

LAMPS

DN

HEADLAMP ALIGNMENT

A properly aimed low beam headlamp will project

top edge of high intensity pattern on screen from 50
mm (2 in.) above to 50 mm (2 in.) below headlamp
centerline. The side-to-side outboard edge of high
intensity pattern should be from 50 mm (2 in.) left to
50 mm (2 in.) right of headlamp centerline (Fig. 1).
The preferred headlamp alignment is 1” down
for the up/down adjustment and 0 for the left/
right adjustment. The high beam pattern should be
correct when the low beams are aligned properly.

To adjust low beam headlamp, rotate alignment

screws (Fig. 2) to achieve the specified aim.

Fig. 1 Headlamp Alignment Screen—Typical

1 – CENTER OF VEHICLE
2 – CENTER OF HEADLAMP

3 – 7.62 METERS (25 FT.)
4 – FRONT OF HEADLAMP

Fig. 2 Headlamp Adjustment Screws

1 – HEADLAMP
2 – UP/DOWN ADJUSTMENT
3 – LEFT/RIGHT ADJUSTMENT
4 – PARK LAMP

DN

LAMPS

8L - 7

SERVICE PROCEDURES (Continued)

FOG LAMP ALIGNMENT

Prepare an alignment screen. Refer to Alignment

Screen Preparation paragraph in this section. A prop-
erly aligned fog lamp will project a pattern on the
alignment screen 100 mm (4 in.) below the fog lamp
centerline and straight ahead (Fig. 3). Rotate the
adjustment screw to adjust beam height (Fig. 4).

Fig. 3 Fog Lamp Alignment —Typical

1 – VEHICLE CENTERLINE
2 – CENTER OF VEHICLE TO CENTER OF FOG LAMP LENS
3 – HIGH-INTENSITY AREA
4 – FLOOR TO CENTER OF FOG LAMP LENS

5 – 100 mm (4 in.)
6 – 7.62 METERS (25 FEET)
7 – FRONT OF FOG LAMP

Fig. 4 Fog Lamp Adjustment

1 – FOG LAMP
2 – ADJUSTMENT SCREW

8L - 8

LAMPS

DN

SERVICE PROCEDURES (Continued)