High Beam and Flash-to-Pass
The Steering Column Control Module (SCCM) monitors the multifunction switch for a flash-to-pass or high beam request. When the multifunction switch is in the FLASH-TO-PASS or HIGH BEAM position, the SCCM sends a message to the BCM to indicate the request.
When the low beams are on and the BCM receives a request for high beams (or a flash-to-pass request), the headlamps remain powered and a shutter within each headlamp is activated. This changes the headlamp beam pattern to illuminate a greater distance.
When the low beams are off and the flash-to-pass is requested, the headlamps and the shutters are activated for approximately 0.5 second. When the low beams are on and the flash-to-pass is requested, the shutters within the headlamps are activated as long as the multifunction switch is held in the FLASH-TO-PASS position.