Normal Operation
WARNING: This page is about a different car, the 2010 Ford Pickup, 2010 Ford F550 Super Duty, 2010 Ford F450 Super Duty, and 2010 Ford Cab & Chassis. However, it is still accessible from the selected car via links, so may be relevant.
When the ignition switch is placed in the START position, fused ignition voltage is sent to:
- the control side of the run/start relay.
- the internal logic of the Smart Junction Box (SJB) for RUN circuit monitoring.
- the SJB and starter relay (diesel engines without One-Touch Integrated Start (OTIS))
- the PCM and OTIS
diode (diesel engines with OTIS
and all gasoline engines)
This pinpoint test is intended to diagnose the following:
- Wiring, terminals or connectors
- Run/start relay
- Starter relay
- Ignition switch
- SJB
- Battery Junction Box (BJB)