Normal Operation
WARNING: This page is about a different car, the 2012 Ford Pickup, 2012 Ford F550 Super Duty, 2012 Ford F450 Super Duty, and 2012 Ford Cab & Chassis. However, it is still accessible from the selected car via links, so may be relevant.
When the parking lamps are on, the Body Control Module (BCM) provides voltage to the hardwired dimmable illumination sources based on the Steering Column Control Module (SCCM) illumination messages that are sent over the network to the BCM.
- B1315:15 (Backlighting (Non Reflective Controls) Illumination Output: Circuit Short Battery or Open) - an on-demand DTC that sets when the BCM detects a short to voltage from the backlighting output circuit.
This pinpoint test is intended to diagnose the following:
- Wiring, terminals or connectors
- BCM