Diagnostic Fault Information
WARNING: This page is about a different car, the 2022 Cadillac CT4. However, it is still accessible from the selected car via links, so may be relevant.
| Circuit | Short to Ground | Open/High Resistance | Short to Voltage | Signal Performance |
|---|---|---|---|---|
| B+ | U18D3 | U18D3 | - | - |
| Ignition | U18D3 | U18D3 | - | - |
| Powertrain Sensor Bus Enable (circuit 4320) | U100B* | U18D3 | - | - |
| CAN 3 Serial Data [+] (circuit 4977) | U0074* | U0074, U18D3* | U0074* | - |
| CAN 3 Serial Data [-] (circuit 4976) | U0074* | U0074, U18D3* | U0074* | - |
| Ground | - | U18D3 | - | - |
| * Other DTCs may set with this fault. | ||||