Normal Operation
WARNING: This page is about a different car, the 2014 Lincoln MKX and 2014 Ford Edge. However, it is still accessible from the selected car via links, so may be relevant.
When the ignition is placed in RUN mode, the Body Control Module (BCM) module provides a ground for the coil (control) side of the run/start relay located in the Battery Junction Box (BJB). The BCM monitors the run/start relay control circuit and sets a DTC if the circuit is open, shorted to ground or shorted to voltage.
- DTC B1310:12 (Run/Start Control: Circuit Short to Battery) - This DTC is set if the BCM detects a short to battery in the run/start relay control circuit during a BCM self-test or during normal operation.
This pinpoint test is intended to diagnose the following:
- Wiring, terminals or connectors
- Run/start relay
- BCM