Smartbeam System: Overview
SMARTBEAM SYSTEMThe optional SmartBeam (auto high) system, includes the digital imager camera and electronic circuitry integral to the electrochromic inside rear view mirror, the SCM, the FCM, the EMIC, the Electronic Vehicle Information Center (EVIC) and the left (lighting) multi-function switch. First, the "Auto Low/High" option must be enabled using the customer programmable features function of the EVIC. Then the "Auto" position must be selected using the left multifunction switch. Finally, the vehicle speed must be greater than 32 kilometers-per-hour (20 miles-per-hour).
Once all of these prerequisites have been met, the SmartBeam camera and its circuitry within the electrochromic mirror automatically sends the appropriate headlamp beam select switch status messages to the FCM over the CAN data bus. The FCM then responds to these messages by providing a pulse width modulated voltage output to the proper headlamp bulbs through the right and left low and high beam feed circuits to illuminate the headlamps. The FCM also sends the appropriate electronic messages to the EMIC to control the illumination of the high beam indicator.
The SCM continues to monitor the left multi-function switch, and will send the appropriate electronic messages to the SmartBeam circuitry in the inside rear view mirror and to the FCM to manually invoke the beam select switch momentary optical horn (flash-to-pass) feature or, when a detent switch position is selected, to override SmartBeam operation.