Flash to Pass (FTP)
WARNING: This page is about a different car, the 2007 Cadillac DTS. However, it is still accessible from the selected car via links, so may be relevant.
When the low beam headlamps are ON and turn signal/multifunction switch handle is pulled toward the driver, ground from G300 is applied through the FTP switch and the flash to pass switch signal circuit to the BCM signaling the flash to pass request. The BCM then turns ON the high beam headlamps as described above, until the turn signal/multifunction switch handle is released. If the low beam headlamps were ON during FTP operation, they will remain ON.