High Beam Input

Range: 0 -16 Volts
The BCM uses this input in order to determine the state of the high beam headlamps. A single wire input monitors the high beam lamp voltage.

On a known good vehicle, with the high beams off, the scan tool displayed value should be battery system voltage.

On a known good vehicle, with the high beams on, the scan tool display value should be 0 percent (0 volts) to 16 percent of the battery system voltage.