Normal Operation
WARNING: This page is about a different car, the 2008 Ford RV Cutaway, 2008 Ford Econoline, 2008 Ford E450 Super Duty, and 2008 Ford Cutaway. However, it is still accessible from the selected car via links, so may be relevant.
The battery junction box (BJB) provides the ignition switch with fused battery power through fuse 7 (60A) along circuit 1050 (LG/VT). When placed in START, the ignition switch provides fused battery power to the central junction box (CJB) through circuits 33 (WH/PK) and 1499 (PK/LG).
This pinpoint test is intended to diagnose the following:
- Wiring, terminals or connectors
- Fuse(s)
- Ignition switch