Conditions for Setting the DTC

WARNING: This page is about a different car, the 2011 Cadillac DTS. However, it is still accessible from the selected car via links, so may be relevant.

U1511

The local interconnect network bus circuit of the front window motor has an open/high resistance.
The B+ circuit of the front window motor is open or shorted to ground.
The ground circuit of the front window motor is open.

U1512

The local interconnect network bus circuit of the rear window motor has an open/high resistance.
The B+ circuit of the rear window motor is open or shorted to ground.
The ground circuit of the rear window motor is open.

U1500 02

The local interconnect network bus circuit is a shorted to ground.

U1500 01

The local interconnect network bus circuit is a shorted to voltage.