Normal Operation
WARNING: This page is about a different car, the 2010 Mercury Milan, 2010 Lincoln MKZ, and 2010 Ford Fusion. However, it is still accessible from the selected car via links, so may be relevant.
When the parking lamps are on, the Smart Junction Box (SJB) sends a Pulse Width Modulated (PWM) voltage to the hardwired dimmable illumination sources based on the input received from the instrument panel dimmer switch.
- DTC B2A32 (LED Backlighting Output Circuit Open) - an on-demand DTC that sets when the SJB detects a short to voltage from the backlighting output circuit.
- DTC B29B7 (White Lighting Output Circuit Open) - an on-demand DTC that sets when the SJB detects a short to voltage from the white lighting (backlighting) output circuit.
This pinpoint test is intended to diagnose the following:
- Wiring, terminals or connectors
- SJB