Low Beam Input - Range 0 - 16 V

The Body Function Controller (BFC) uses this input in determining the state of the Low Beam Headlamps. A single wire input into the Body Function Controller (BFC) monitors the Low Beam Lamp voltage. On a known good car, with Low Beams Off, the scan tool displayed value should be battery system voltage. Refer to Battery Voltage. Battery Voltage - Range 0 - 25.5 V

On a known good car, with DRL on, the scan tool display value should be 25% to 83% of battery system voltage. On a known good car, with Low Beams on, the scan tool display value should be 0% (0 volts) to 16% of battery system voltage. On a known good car, with High Beams On (Low Beams Off), the scan tool display value should be battery system voltage.