Normal Operation
WARNING: This page is about a different car, the 2009 Ford Mustang. However, it is still accessible from the selected car via links, so may be relevant.
When the ignition switch is turned to the RUN position, fused battery voltage is sent to the Smart Junction Box (SJB) along circuit 1044 (WH/YE).
- DTC B1356 Ignition RUN Circuit Open - If during the on-demand self test the SJB does not receive the RUN input from the ignition switch or if the ignition switch position cannot be determined, DTC B1356 will be set.
This pinpoint test is intended to diagnose the following:
- Wiring, terminals or connectors
- Ignition switch
- SJB