white. The igniter controls the voltage applied to
the lamp electrodes. The igniter uses the voltage
supplied by the ballast module and momentarily
steps up the voltage to 25,000 volts to start the
lamp. Once ignited, it will reduce the voltage to 85
volts.
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3. Cable - The cable is used to transfer the high voltage
produced by the ballast module to the
lamp/igniter.
DIAGNOSIS AND TESTING
HIGH INTENSITY DISCHARGE HEADLAMPS
The High Intensity Discharge (HID) headlamps are supplied B+ voltage and ground, the same as normal halogen
low beam lamps. The low beam system is different from there forward. The ballast module is mounted to the bottom
of the headlamp unit. The ballast module has internal circuit protection to prevent module damage in case of an
open or shorted circuit. The module has overcharge and undercharge circuit protection. If either is sensed, the module
will not illuminate the headlamps for that key cycle or until the fault is corrected. Recycle the ignition and headlamp
switch if both headlamps do not illuminate. Before determining the headlamp assembly is faulty, check the
connector at the headlamp and check if there is voltage coming from the IPM pin providing the power to the respective
headlamp. If the module senses a short or open circuit condition, it will not operate the lamp/igniter.
WARNING: The headlamp unit must be removed to perform these tests (Refer to 8 - ELECTRICAL/LAMPS/
LIGHTING - EXTERIOR/HEADLAMP UNIT - REMOVAL). Failure to do so could result in personal injury or
death.
1. Inspect lamp for a burned out lamp. If lamp is burned out it will appear black or smoky, similar to a normal
halogen bulb. If lamp looks OK, go to Step 2.
2. Check for B+ battery voltage at the connector going into the ballast module. Refer to Wiring Diagrams for connector
location. If battery voltage and a good ground are present, go to Step 3. If B+ voltage and a good ground
are not present, refer to Wiring Diagrams for circuit and connector locations to find short or open circuit.
3. Plug in a known good ballast module and check for lamp operation. If lamp lights, replace ballast module. If lamp
still fails to light, replace igniter assembly.
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REMOVAL
HALOGEN HEADLAMP
Note: If replacing the left low or high beam headlamp,
the air box has to be removed first (Refer to
9 - ENGINE/AIR INTAKE SYSTEM - REMOVAL).
1. Disconnect and isolate the battery negative cable.
2. Disconnect the lamp electrical connector.
3. Twist lamp (1 and 2) out of headlamp housing.
HIGH INTENSITY DISCHARGE (HID) HEADLAMPS (IF EQUIPPED) - LOW BEAM
HEADLAMP
Note: If replacing the left front low beam HID headlamp,
the air box has to be removed first (Refer to
9 - ENGINE/AIR INTAKE SYSTEM - REMOVAL).
1. Disconnect and isolate the battery negative cable.
2. Remove the rubber boot (1) protecting the lamp/igniter
from the elements.
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3. Disconnect the electrical cable connector to the
lamp/igniter by pulling straight down.
4. Release the retaining wire clip on the back of the
lamp/igniter.
5. Grab the igniter by pulling rearward and rocking it
slightly as you pull.
6. Pull the igniter straight out of the headlamp unit.
The lamp is integral to the igniter and cannot be
separated.
BALLAST MODULE
1. Remove the headlamp unit (Refer to 8 - ELECTRICAL/
LAMPS/LIGHTING - EXTERIOR/HEADLAMP
LX LAMPS/LIGHTING - EXTERIOR - SERVICE INFORMATION 8L - 95
UNIT - REMOVAL).
2. From the underside of the headlamp unit, remove
the six retaining screws (1).
3. Pull the ballast module out of headlamp unit.
4. Disconnect the two electrical connectors (1 and 2).
² One of the connectors (1) will be a standard
push tab to release connector.
² The second connector (2) has a lever that must
be rotated away or down from the wire of the
cable and connector.
5. Separate ballast module from headlamp unit.
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CABLE
1. Remove the headlamp unit (Refer to 8 - ELECTRICAL/
LAMPS/LIGHTING - EXTERIOR/HEADLAMP
UNIT - REMOVAL).
2. From the underside of the headlamp unit, remove
the six retaining screws (1).
3. Pull the ballast module out of headlamp unit.
4. Disconnect the cable connector (2) Move the lever
away or down from the wire of the cable and
LX LAMPS/LIGHTING - EXTERIOR - SERVICE INFORMATION 8L - 97
connector.
5. Remove the rubber boot (1) protecting the lamp/igniter
from the elements.
6. Disconnect the electrical cable connector to the
lamp/igniter by pulling straight down.
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7. Maneuver cable through headlamp unit to
separate.
INSTALLATION
HALOGEN HEADLAMP
1. Twist lamp (1 or 2) into headlamp housing clockwise.
2. Connect the lamp electrical connector.
3. Connect the battery negative cable.
Note: If replacing the left low or high beam headlamp,
the air box has to be reinstalled (Refer to 9 -
ENGINE/AIR INTAKE SYSTEM - INSTALLATION).
LX LAMPS/LIGHTING - EXTERIOR - SERVICE INFORMATION 8L - 99
HIGH INTENSITY DISCHARGE (HID) HEADLAMPS (IF EQUIPPED) - LOW BEAM
HEADLAMP
1. Push the igniter straight into the headlamp unit with
the connector pointing straight down. The lamp is
integral to the igniter.
2. Put the retaining wire clip on the back of the
lamp/igniter.
3. Connect the electrical cable connector to the
lamp/igniter.
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4. Install the rubber boot (1) protecting the lamp/igniter
from the elements.
5. Connect the battery negative cable.
Note: If replacing the left low beam headlamp, the
air box has to be reinstalled (Refer to 9 - ENGINE/
AIR INTAKE SYSTEM - INSTALLATION).
BALLAST MODULE
1. Connect the two electrical connectors (1 and 2).
² One of the connectors (1) will be a standard
push tab to release connector.
² The second connector (2) has a lever that must
be locked when connected.
2. Position the ballast module in of headlamp unit.
LX LAMPS/LIGHTING - EXTERIOR - SERVICE INFORMATION 8L - 101
3. From the underside of the headlamp unit, install
the six retaining screws (1).
4. Install the headlamp unit (Refer to 8 - ELECTRICAL/
LAMPS/LIGHTING - EXTERIOR/HEADLAMP
UNIT - INSTALLATION).
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CABLE
1. Maneuver cable through headlamp unit.
2. Connect the cable electrical connectors (2). The
connector (2) has a lever that must be locked when
connected.
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3. From the underside of the headlamp unit, install
the six retaining screws (1).
4. Connect the electrical cable connector to the
lamp/igniter.
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