Normal Operation
WARNING: This page is about a different car, the 2013 Ford F-550 Super Duty, 2013 Ford F-450 Super Duty, 2013 Ford F-350 Super Duty, and 2013 Ford F-250 Super Duty. However, it is still accessible from the selected car via links, so may be relevant.
When the ignition switch is cycled to the OFF/LOCK position, from any other position, a monitoring cycle begins. The monitoring cycle checks that the voltage supplied to the Body Control Module (BCM) from the ignition switch through the run/acc, run/start and start circuits were delivered correctly for each ignition switch position.
- DTC U300A:01 (Ignition Switch: General Electrical Failure)-- sets if the voltage inputs to the BCM do not match the pre defined configurations for each ignition switch position.
This pinpoint test is intended to diagnose the following:
- Wiring, terminals or connectors
- Ignition switch
- Circuit Deactivation Ignition Module (CDIM), if equipped