Vehicles have incandescent lighting on the exterior for illuminating and indicating purposes. Lighting circuits are pro-
tected by fuses. Lighting circuits require an overload protected power source, on/off device, lamps and body ground
to operate.
TURN SIGNAL AND HAZARD WARNING SYSTEM
The turn signal and hazard warning system includes the following major components, which are described in further
detail elsewhere in this service information:
•
Front Side Marker Lamps
•
Hazard Warning Switch
•
Left Multi-Function Switch
•
Turn Signal Cancel Cam
•
Turn Signal Indicators
•
Turn Signal Lamps
The turn signal and hazard warning systems also provide the following features:
•
Flash Lights with Lock - This customer programmable feature flashes the hazard warning lamps to provide
optical verification that the Remote Keyless Entry (RKE) System has received a valid Lock or Unlock request
from an RKE transmitter. (Refer to 8 - ELECTRICAL/POWER LOCKS - DESCRIPTION - REMOTE KEYLESS
ENTRY SYSTEM).
•
Panic Mode Optical Alert - This feature flashes the hazard warning lamps to provide an optical alert when the
Remote Keyless Entry (RKE) System panic mode is activated by depressing the Panic button on an RKE
transmitter. (Refer to 8 - ELECTRICAL/POWER LOCKS - DESCRIPTION - REMOTE KEYLESS ENTRY SYS-
TEM).
•
Turn Signal On Warning - This feature provides the vehicle operator with both visual and audible reminders
when a turn signal has been left turned on for an extended period. (Refer to 8 - ELECTRICAL/OVERHEAD
CONSOLE/ELECTRONIC VEHICLE INFO CENTER - DESCRIPTION).
•
Vehicle Theft Security System (VTSS) Optical Alarm - This feature flashes the hazard warning lamps to
provide an optical alarm when the VTSS is armed and activated by an unauthorized entry into the vehicle.
(Refer to 8 - ELECTRICAL/VEHICLE THEFT SECURITY - DESCRIPTION - VEHICLE THEFT SECURITY
SYSTEM).
OPERATION
EXTERIOR LAMPS
The headlamps operate through the headlamp switch which provides a ground signal to the headlamp beam selec-
tor in the multi-function switch. The multi-function switch sends a low or high beam signal input to the Body Control
Module (BCM), which energizes the low or high beam relay. Once the low or high beam relay is energized, voltage
is provided to the headlamps.
For park lamps operation, the headlamp switch provides a ground signal to the BCM, which energizes the park lamp
relay. Once the park lamp relay is energized, voltage is provided to the park lamps.
For fog lamps operation, the headlamp switch provides a ground signal to the BCM, which energizes the fog lamp
relay. Once the fog lamp relay is energized, voltage is provided to the fog lamps.
Day Time Running Lights (Headlamps) System, installed on vehicles manufactured for sale in Canada only, illumi-
nate the headlamps when the ignition switch is turned to the on position. The headlamps are illuminated at less than
50% of normal intensity.
TURN SIGNAL AND HAZARD WARNING SYSTEM
The turn signal system operates on battery current received on a fused ignition switch output (run) circuit so that the
turn signals will only operate with the ignition switch in the On position. The hazard warning system operates on
non-switched battery current received on a fused B(+) circuit so that the hazard warning remains operational regard-
less of the ignition switch position. When the turn signal system is activated, the circuitry of the left multi-function
switch and the FCM will cause the selected (right or left) turn signal indicator, front park/turn signal lamp, front side
marker lamp and rear tail/stop/turn signal lamp to flash on and off. When the hazard warning system is activated,
the circuitry of the hazard warning switch and the FCM will cause both the right side and the left side turn signal
indicators, front park/turn signal lamps, front side marker lamps and rear tail/stop/turn signal lamps to flash on and
off. The Front Control Module (FCM) can also activate the hazard warning system lamps.
8L - 78
LAMPS/LIGHTING - EXTERIOR - SERVICE INFORMATION
WK