Principles of Operation

PRINCIPLES OF OPERATION

Headlamps
The headlamps are controlled by the smart junction box (SJB). The headlamp and multifunction switches are hard-wired to the SJB and are constantly monitored. The SJB processes information (such as low beam, high beam or flash-to-pass requests) from these switches and outputs the appropriate command to the headlamps (which are also hard-wired to the SJB). This is the same for the LOW and HIGH BEAMS and FLASH-TO-PASS positions. The SJB provides a lamp outage indication for the low beams. Fault management of the headlamps provides some headlamp functionality. In the event of all multifunction switch, all headlamp switch or ignition switch invalid or missing data failures, the exterior lamps will be illuminated. There is also a headlamp battery saver feature. This feature turns off the headlamps 10 minutes after the ignition switch is turned OFF.

Autolamps and DRL are 2 functions which may be configured in the SJB.