Normal Operation

WARNING: This page is about a different car, the 2011 Mercury Milan, 2011 Lincoln MKZ, and 2011 Ford Fusion. However, it is still accessible from the selected car via links, so may be relevant.

The Smart Junction Box (SJB) sends a voltage signal to the multifunction switch for the flash-to-pass request. When the multifunction switch is placed in the FLASH-TO-PASS position, the voltage signal is routed to ground. When the SJB detects a request for the flash-to-pass, the SJB provides voltage to the high beam headlamps.

The flash-to-pass feature is unique for Milan. If the low beams are off when the flash-to-pass is requested, the low beams and the shutters (within the headlamps) are activated for approximately 0.5 second. If the low beams are on when the flash-to-pass is requested, the shutters (within the headlamps) are activated as long as the multifunction switch is held in the FLASH-TO-PASS position.

This pinpoint test is intended to diagnose the following:

Wiring, terminals or connectors
Multifunction switch
SJB