Normal Operation - High Intensity Discharge (HID) Low Beam Headlamps
WARNING: This page is about a different car, the 2006 Mercury Milan, 2006 Lincoln Zephyr, and 2006 Ford Fusion. However, it is still accessible from the selected car via links, so may be relevant.
The SJB sends reference signals to the headlamp switch through circuits CLF18 (BU/WH), CLF19 (VT/GN), CLF23 (WH/VT) and CLS34 (GY). At any given time, the headlamp switch routes one of the input circuits to ground through circuit GD116 (BK/VT).
When the SJB detects the headlamp switch in the HEADLAMPS ON position and the multifunction switch in the LOW BEAM position, the SJB sends voltage through circuit CLF04 (BN/BU) and circuit CLF05 (BU/GN) to the LH and RH HID relay coils, respectively. When the relays are energized, voltage is routed to the LH and RH headlamps through circuit CLF30 (VT/BN) and circuit CLF31 (YE/GY), respectively.