Conditions for Setting the DTC
WARNING: This page does not describe the selected car, but rather 8 other vehicles, including the 2012 GMC Yukon XL, 2012 GMC Yukon, 2012 Chevrolet Tahoe, 2012 Chevrolet Suburban, and 2012 Chevrolet Avalanche. However, it is still accessible from the selected car via links, so may be relevant.
C0870 00
The trailer brake circuit reference voltage for the trailer brake control relay is below 4.8 V or above 5.2 V.
C1112 00
- The fuel pump/trailer brake control module detects a short to ground, open or a short to voltage on the integrated trailer brake relay control active low circuit.
- The fuel pump/trailer brake control module detects an open in the battery positive voltage circuit to the trailer brake control relay.
- The fuel pump/trailer brake control module detects an open in the ground circuit to the trailer brake control relay.
- The fuel pump/trailer brake control module detects a short to ground or open in the solid state relay enable circuit.
C1113 01
- The fuel pump/trailer brake control module detects a short to voltage in the solid state relay enable circuit.
- The fuel pump/trailer brake control module detects a short to voltage in the trailer brake output supply voltage control circuit.
C1114 00
The fuel pump/trailer brake control module detects a short to ground, open or a short to voltage on the solid state relay output circuit.
C1119 00
The fuel pump/trailer brake control module detects a short to ground, open or a short to voltage on the relay feedback circuit.