Pinpoint Test A : No Power In All Ignition Switch Positions - Conventional Ignition Switch: Notes
WARNING: This page is about a different car, the 2018 Ford Focus. However, it is still accessible from the selected car via links, so may be relevant.
Refer to Power Distribution for schematic and connector information.
Normal Operation and Fault Conditions
The ignition switch receives fused battery voltage from BCM fuse 78 (5A). In the ACC or ON position, this voltage is sent through the ignition switch and back to the BCM. In the START position, this voltage is sent through the ignition switch and then to both the BCM and the PCM.
Possible Causes
- Fuse
- Wiring, terminals or connectors
- Ignition switch
Visual Inspection and Diagnostic Pre-checks
- Inspect the battery and battery cables.
- Inspect high current BJB fuse 9 (50A).
- Inspect BCM fuse 78 (5A).