Normal Operation

WARNING: This page is about a different car, the 2006 Mercury Mariner and 2006 Ford Escape. However, it is still accessible from the selected car via links, so may be relevant.

The smart junction box (SJB) sends a reference signal to the multifunction switch through circuits 1033 (RD/YE) (low beam request), 12 (LG/BK) (high beam request) and 196 (DB/OG) (flash-to-pass request). When the SJB detects a request for the low beams, the SJB sends voltage through circuits 161 (DG/OG) (RH headlamp) and 160 (DB/WH) (LH headlamp) to the low beam headlamps. When the headlamps are on and the SJB detects a request for the high beams, the SJB sends voltage through circuits 1779 (DB/LG) (RH headlamp) and 1724 (WH/LG) (LH headlamp) to the high beam headlamps.

When the SJB detects a request for the flash-to-pass, the SJB sends voltage through circuits 1779 (DB/LG) (RH headlamp) and 1724 (WH/LG) (LH headlamp) to the high beam headlamps.