Normal Operation
WARNING: This page is about a different car, the 2006 Mercury Montego, 2006 Ford Freestyle, and 2006 Ford Five Hundred. However, it is still accessible from the selected car via links, so may be relevant.
With the ignition switch in the START or RUN position, the instrument cluster receives voltage from the smart junction box (SJB) through circuit 1566 (RD/YE). When the ignition switch is in the RUN or ACC position, voltage is received from the SJB through circuit 295 (LB/PK). With the ignition switch in the OFF position, the instrument cluster receives its keep-alive voltage from the SJB through circuit 483 (RD). The instrument cluster grounding is accomplished through circuit 1203 (BK/LB) and the circuit 1205 (BK).