1997 LINCOLN MARK VIII Owners Manual

252
WARNING
Do no tpark ,idle ,or driv eyou rvehicle

253
How to Prepare Your Vehicle for
Inspection/Maintenance (I/M) TestingIn some localities it may become a legal
requirement to pass an Inspection/Maintenance
(I/M) test of the On-Board Diagnostic (OBD) II
system. If the vehicle's powertrain system or its
battery has just been serviced, the OBD II system is
reset to a not ready for I/M testing condition. To
prepare for I/M testing, the law specifies that
additional mixed city and highway driving is
required to complete the check of the OBD II
system.
The driving modes required to reach the ready
condition consist of a minimum of 30 minutes of
city and highway driving as described below:q
At least twenty minutes driving in stop and go,
city type traffic with at least four idle periods.
q
At least ten minutes of driving on an
expressway or highway.Before completing the above driving modes, the
engine must be warmed up and at operating
temperature. Once started, the vehicle must not be
turned off during these driving modes.
Lights and Bulb ReplacementIt is a good idea to check the operation of the
following lights frequently:q
headlamps
q
high-mount brakelamp
q
tail lamps
q
brakelamps
q
hazard flasher
q
turn signals
q
license plate lamps
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254
Thealignmen tof you rheadlamp sshoul dbe
WARNING
Handl ea haloge nheadlam pbulb

255
Headlamp bulb removalRemoving the high beam headlamp bulb1. Make sure that the headlamp switch is in the
OFF position.
2. Lift the hood, remove the sight shield above
the headlamp and find the bulb in the
headlamp socket.3. Remove the high beam dust cap by rotating
counterclockwise 1/4 turn. Pull back to
exposes wiring and connector.
4. Remove the bulb connector by pulling rearward
to free it from the lamp assembly.
5. Remove the electrical connector by pulling off
the bulb base.
Installing the high beam headlamp bulb1. Push the electrical connector into the rear of
the plastic base of the bulb until it snaps,
locking it into position.
2. Insert the glass envelope of the bulb into the
lamp assembly socket while aligning the locking
tabs.
3. Rotate the bulb 1/4 turn to lock.
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2564. Replace the high beam dust cap by aligning
tabs and rotating clockwise 1/4 turn.
5. Replace the sight shield.Aiming HeadlampsYour vehicle is equipped with a Vehicle Headlamp
Aim Device (VHAD) on each headlamp body. Each
headlamp may be properly aimed in the horizontal
direction (left/right) and the vertical position
(up/down).
NOTE:A non-zero bubble reading does not
necessarily indicate out-of-aim headlamps. If your
vehicle is not positioned on a level surface, the
slope will be included in the level indicator.
Therefore, vertical headlamp adjustment should be
performed only when beam direction appears to be
incorrect or a level surface can be verified.Tools required: One 6mm socket and ratchet.
The Horizontal aim must be adjusted first.
NOTE:The following procedure assumes that the
vehicle's front structure is in factory alignment
condition. If the vehicle has been in an accident
requiring the front end of the vehicle to be
repaired, the horizontal indicator should be
recalibrated by the servicing facility.
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257
Before adjusting your headlamps, you must make
sure that the air suspension has been adjusted to
the proper ride height. In order to do this:
1. Position the vehicle on a level surface.
2. Make sure the air suspension switch in the
luggage compartment is in the ON position.
3. Turn the ignition key to the ON position.
4. Open and close the driver's door to allow the
air suspension to fully level.
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258Horizontal aim adjustment1. Open the hood and lift the front end cover
from its velcro attachments. Locate the
horizontal level indicator and adjustment screw.
2. Use a 6mm socket and ratchet to turn the
horizontal adjusting screw until the horizontal
indicator is in line with the ª0º reference.
Vertical aim adjustmentNOTE:The numbers shown on the vial indicate
beam direction in degrees up or down.
1. Locate the vertical level indicator and
adjustment screw.
2. Use a 6mm socket and ratchet to turn the
vertical adjustment screw until the bubble in
the horizontal level indicator is centered in the
vial.
3. Replace the sight shield and close the hood.
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259
Bulb specifications
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