Chrysler RAM TRUCK 2500 1994 Service Manual page 485

8L - 2 LAMPS
•
ACTION
• Clean battery terminal clamps and posts. Refer to
Group 8B, Battery/Starter/Generator Service for
proper procedures.
• Test charging system output. Refer to Group 8A,
Battery/Starting/Charging Systems Diagnostics for
proper testing procedures.
• Test for high resistance i n headlamp circuits.
• Defective headlamp bulb.
SYMPTOM
Bulbs burn out frequently.
ACTION
• Test charging system output. Refer to Group 8A,
Battery/Starting/Charging Systems Diagnostics for
proper testing procedures.
• Check for loose or corroded connector terminals or
splices i n headlamp circuits. Refer to Group 8W, Wir­
ing Diagrams for component and splice locations.
SYMPTOM
Headlamps are dim with engine running
above idle. Canada cars must have lamps ON.
ACTION
• Test charging system output. Refer to Group 8A,
Battery/Starting/Charging Systems Diagnostics for
proper testing procedures.
HEADLAMP
HEADLAMP ALIGNMENT
Headlamps can be aligned using the screen method
provided i n this section. Alignment Tool C4466-A or
equivalent can also be used. Refer to instructions
provided with the tool for proper procedures. The
preferred headlamp alignment setting is 0 for
the left/right adjustment and 1" down for the
up/down adjustment.
HEADLAMP ALIGNMENT PREPARATION
(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.
• Test for high resistance i n headlamp circuits.
• Defective headlamp bulb.
SYMPTOM
Headlamps flash randomly.
ACTION
• Test for poor circuit ground.
• Test for high resistance i n headlamp circuits.
• Test condition of headlamp relay.
• Check for loose or corroded connector terminals or
splices i n headlamp circuits. Refer to Group 8W, Wir­
ing Diagrams for component and splice locations.
SYMPTOM
Headlamps do not illuminate.
ACTION
• Test for voltage at headlamp bulbs connectors.
• Test headlamp relay.
• Test headlamp switch.
• Test high-beam headlamp dimmer switch.
• Check for loose or corroded connector terminals or
splices i n headlamp circuits. Refer to Group 8W, Wir­
ing Diagrams for component and splice locations.
ALIGNMENT
HEADLAMP ADJUSTMENT USING ALIGNMENT SCREEN
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.
(2) I f 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 ve­
hicle 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.