Exterior Lighting System

The low and high beam headlamps are controlled directly by an output from the CTM. The park lamps and fog lamps (if equipped) are controlled by external relays that are energized by the CTM. The headlamp switch provides the control signal through the multifunction switch to the CTM, which indicates low or high beam operation. The Optical Horn (Flash to Pass) feature operates both the high beam and low beam headlamps.

The CTM provides the Headlamp Time Delay feature. To start the delay, turn the ignition switch to OFF position while the headlamps are on, then turn the headlamp switch to the OFF position. This has to be done within 45 seconds of the ignition switch being turned to the OFF position. The headlamps will remain on for 55-65 seconds. If during this delay period, the headlamp switch is turned on, then off, or ignition switch is turned to ON position, the delay will be canceled and the headlamps will turn off immediately. During the delay period, only the headlamps are turned on and the park lamps/fog lamps are turned off.

The CTM also provides battery protection to avoid wearing down the battery if the customer leaves the park lamps or headlamps on for extended period of time with the ignition switch in the OFF position. If the park lamps or headlamps remain on for more than 5 minutes while the ignition switch is in the OFF position, the headlamps and park lamps will be turned off and the input causing the lamps to be on will be ignored until the input is corrected. Once the 5-minute time-out has extinguished the headlamps and park lamps, any change in the ignition switch, door ajar switches, headlamps switch or park lamp switch will reset the 5-minute timer and return the headlamps and park lamps to normal operation. A 15-minute time-out is initiated if the ignition switch is in the OFF position and the headlamp switch is cycled from off to on (light mode).