Principles of Operation (How Does It Work?)

NOTE: The ignition switch must be cycled from OFF to RUN to enable the SSP feature.

Principles of Operation
The headlamps are controlled by the FEM and instrument cluster module. The headlamp and multifunction switches are hardwired to the instrument cluster. When the headlamp switch is in any position, the instrument cluster module will send a command to the FEM through the SCP communication network. The FEM will process this information and output the appropriate command to the headlamps, which are hardwired to the FEM. This is the same for the high beams and flash-to-pass functions, which are controlled by the multifunction switch.

Autolamps and daytime running lamps are two functions which the FEM may be configured to include.

Left and right low, as well as high beams will provide a lamp outage indication. Fault management of the headlamps will provide some headlamp functionality in the event of all multifunction switch, all headlamp switch or ignition switch invalid or missing data failures, the low beams will be illuminated.