Flash-to-Pass

When the multi-function lever (headlamp dimmer switch) is pulled towards the driver (but does not click), CKT 307 (YEL) is grounded to lamp control module (LCM). It then supplies battery positive voltage (B+) to the LH and RH high beam headlamps for as long as the lever is held. The flash-to-pass function will override the low beam headlamps or Daytime Running Lamps (DRL) if either is active.