Normal Operation
WARNING: This page is about a different car, the 2009 Mercury Sable, 2009 Ford Taurus X, and 2009 Ford Taurus. However, it is still accessible from the selected car via links, so may be relevant.
When the ignition switch is in the RUN position, voltage is provided to Battery Junction Box (BJB) fuses 38 (10A) and 39 (10A) along circuit CDC34 (WH/OG). Voltage is also sent to the Smart Junction Box (SJB) microprocessor and the SJB run/start bus along circuit CDC34 (WH/OG).
This pinpoint test is intended to diagnose the following:
- Wiring, terminals or connectors
- Ignition switch
- SJB