Normal Operation
WARNING: This page is about a different car, the 2005 Ford Pickup. However, it is still accessible from the selected car via links, so may be relevant.
The ignition switch ACC/RUN provides voltage through circuit 297 (BK/LG) and circuit 964 (DB/LG) to the instrument cluster. The instrument cluster receives the output voltage from the central junction box (CJB) circuits 489 (PK/BK), 640 (RD/YE) and 1003 (GY/YE), if the instrument cluster detects an open circuit, DTC B1360 will be set.