Conditions for Setting the DTC
WARNING: This page is about a different car, the 2007 GMC Sierra and 2007 Chevrolet Silverado. However, it is still accessible from the selected car via links, so may be relevant.
DTC C1114 will set as current DTC, if one of the following conditions is true:
- The TBCM detects an open in the trailer auxiliary supply voltage circuit.
- The TBCM detects short to ground in the trailer auxiliary supply voltage circuit.
- The TBCM detects short to battery positive in the manual apply signal circuit.