Normal Operation
WARNING: This page is about a different car, the 2007 Mercury Mariner and 2007 Ford Escape. However, it is still accessible from the selected car via links, so may be relevant.
The instrument panel dimmer switch is an input to the instrument cluster through circuit 1011 (TN/OG). The instrument panel dimmer switch is grounded through circuit 570 (BK/WH).
DTC B1246 - sets when an open or short to ground is detected on circuit 1011 (TN/OG) or a open is detected circuit 570 (BK/WH).
Possible Causes
- Circuit 1011 (TN/OG) open or short to ground
- Circuit 570 (BK/WH) open
- Instrument panel dimmer switch
- Instrument cluster