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.
Under normal operation, voltage is supplied to the LH front window control switch through Body Control Module (BCM) circuit breaker 48 (30A). Intermittent operation may be caused by a short to ground which temporarily causes the circuit breaker to open. Once open, all power windows are inoperative until the circuit breaker cools and the contacts close again. Activating all window control switches one at a time in both directions until the breaker opens may help in narrowing down the exact location of the short circuit if present.
This pinpoint test is intended to diagnose the following:
- Circuit breaker
- Wiring, terminals or connectors