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Z
LAMPS
8L - 1
LAMPS
CONTENTS
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page
BULB APPLICATION .....................
DIAGNOSTIC PROCEDURES ................
EXTERIOR LAMP SYSTEMS ...............
GENERAL INFORMATION ..................
INTERIOR LAMPS ........................
SERVICE PROCEDURES ...................
GENERAL INFORMATION
Each vehicle is equipped with various lamp assem-
blies. 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.
When changing lamp bulbs check the socket for
corrosion. If corrosion is present, clean it with a wire
Multi-Purpose Grease or equivalent.
Aero headlamps use a replaceable bulb that is
mounted in a molded plastic lens.
DIAGNOSTIC PROCEDURES
Always begin any diagnosis by testing all of the
fuses and circuit breakers in the system. Refer to
Group 8W, Wiring Diagrams.
DIMMER SWITCH TEST
(1) Disconnect battery negative cable.
(2) Remove tilt lever.
(3) Remove screws along bottom edge of steering
column.
(4) Remove upper and lower shrouds to gain access
to the switch connector (Fig. 1).
LEFT HAND SWITCH POD
The multi-function switch pod contains electrical
circuitry for:
²
Auto Headlamps
²
Park Lamps
²
Headlamps
²
Low Beam/Fog Lamp
²
Instrument Lamp Intensity
Dome Lamp
This multi-function switch pod is mounted to the
left hand side of the instrument panel. Should any
function of the switch fail, other than illumination
bulbs, the entire switch pod must be replaced.
The multi-function switch also serves as a fog lamp
lock-out circuit. The circuit to the fog lamp switch is
completed only when the dimmer switch is in the low
beam position.
TURN SIGNAL/DIMMER SWITCH
This integrated switch is mounted to the left of the
steering column. Should any function of this switch
fail, the entire switch must be replaced. Refer to
Group 8J, Turn Signals And Hazard Warning Flasher
for service procedures.
Fig. 1 Steering Column Covers
brush. Coat the inside of the socket lightly with Mo-
par
t
²
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(5) Remove switch connector (Figs. 2 and 3).
(6) Use an ohmmeter to test for continuity between
the terminals of the switch as shown in the chart
(Fig. 4).
(7) Refer to Service Procedures for assembly.
Fig. 2 Multi-function Switch Connector
Fig. 4 Dimmer Switch Continuity Chart
Fig. 3 Steering Column Connectors
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LAMPS
8L - 3
SERVICE PROCEDURES
INDEX
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Aero Headlamp Replacement ................
Backup Lamps ...........................
Center High Mounted Stop Lamp (CHMSL) ......
Fog Lamp Switch Replacement ...............
Fog Lamps .............................
Headlamp Alignment ......................
Headlamp Alignment Preparation ..............
Headlamp Switch .........................
Headlamp/Fog Lamp Adjustment Using Alignment
Screen ...............................
License Plate Lamp .......................
Parking Lamp Bulb/Lens Replacement ..........
Rear Side Marker Lamp ....................
Tail and Stop Lamps ......................
Turn Signal and Side Marker Lamp ............
Turn Signal Lamp ........................
Turn Signal/Dimmer Switch ..................
Underhood Lamp .........................
HEADLAMP ALIGNMENT
Headlamps can be aligned using the screen method
provided in 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
(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.
(
down for the
HEADLAMP ADJUSTMENT
A properly aimed low beam will project the top edge
of high intensity pattern on the screen from 50 mm (2
in.) above to 50 mm (2 in.) below headlamp center-
line. The side-to-side left edge of high intensity pat-
tern should be from 50 mm (2 in.) left to 50 mm (2 in.)
right of headlamp centerline (Fig. 1).
The preferred
headlamp alignment is 0 for the left/right ad-
justment and 1
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.
down for the up/down adjust-
ment.
The high beams on a vehicle with aero head-
lamps cannot be aligned. The high beam pattern
should be correct when the low beams are aligned
properly.
To adjust headlamp aim, rotate alignment screws.
(
HEADLAMP/FOG LAMP ADJUSTMENT USING
ALIGNMENT SCREEN
FOG LAMP ADJUSTMENT
Prepare an alignment screen. A properly 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).
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) If necessary, tape a line on the floor 7.62 meters
(25 ft) away from and parallel to the wall (Fig. 1).
(3) From the floor up 1.27 meters (5 ft), tape a line
on the wall at the centerline of the vehicle. Sight
along the centerline of the vehicle to verify accuracy
of 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.
AERO HEADLAMP REPLACEMENT
CAUTION: Do not touch the bulb glass with fingers
or other oily surfaces. Reduced bulb life will result.
(1) Grasp lower edge of headlamp lens. Pull
straight back (away) from grille opening reinforce-
ment (GOR). Disengage lower adjuster pivots from
lens assembly (Fig. 4).
(2) Grasp upper edge of headlamp lens. Pull
straight back from grille opening reinforcement
(GOR). Disengage upper adjuster pivot from lens as-
sembly.
(3) Locate and disconnect the 3 wire connector be-
hind the headlamp.
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Fig. 1 Headlamp Alignment Screen —Typical
(5) Replace by seating the assembly in the lamp
housing and turning the lock ring 1/8 turn clockwise
to secure.
PARKING LAMP BULB/LENS REPLACEMENT
The parking lamp is mounted on the side of the
GOR next to headlamp assembly.
(1) Open hood.
(2) Remove two screws which hold the parking
lamp in position (Fig. 6).
(3) Disengage lamp and grasp and pull bulb (194
NA) to remove.
To install, reverse the removal procedure.
Fig. 2 Aero Headlamp Alignment
TURN SIGNAL AND SIDE MARKER LAMP
(1) The parking lamp must be removed to get to
attaching screws for this lamp.
(2) Remove the two screws and slide lamp outboard
to expose the bulb (Fig. 7).
(3) To replace turn signal bulb, press in on bulb
(1295na) and rotate 1/4 turn to remove.
(4) To replace sidemarker bulb (194na) grasp and
pull from lamp.
(5) After replacing bulb, slide lamp into slot pro-
vided on inboard side of headlamp assembly. Replace
two screws and replace parking lamp.
HEADLAMP BULB REMOVAL
(1) Lift hood to access lamps.
(2) Reach into engine compartment and locate lock
ring supporting the headlamp bulb assembly.
(3) Rotate the lock ring 1/8 turn counterclockwise
(Fig. 5).
(4) Pull the bulb (9004) straight out from the hous-
ing. This is a halogen bulb, take care not to touch it
with your fingers.
FOG LAMPS
Fog lamps are turned OFF by the circuit relay
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LAMPS
8L - 5
Fig. 3 Fog Lamp Alignment —Typical
Fig. 4 Headamp Removal
Fig. 5 Headlamp Bulb Removal
when high beam driving lamps are turned ON.
Fog lamps may be operated ONLY when low beam
headlamps are ON. If the headlamps are switched to
high beam, the fog lamps will turn OFF. The fog lamps
will go back on when the high beams are switched OFF.
FOG LAMP BULB/LENS REPLACEMENT
CAUTION: Do not touch the bulb glass with fingers
or other oily surfaces. Reduced bulb life will result.
(1) Remove center pivot bolt and disconnect wire
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