Diagnostic Fault Information
| Circuit | Short to Ground | Open/High Resistance | Short to Voltage | Signal Performance |
|---|---|---|---|---|
| B+ | U18A2 | U18A2 | - | - |
| Ignition | U18A2 | U18A2 | - | - |
| Accessory Wake Up Serial Data (circuit 5985) | U1814 | U18A2 | - | - |
| Fuel Pump Primary Relay Control (circuit 465) | U18A2 | U18A2 | - | - |
| Powertrain Sensor Bus Enable (circuit 4320) | U18A2 | U18A2 | - | - |
| Powertrain High Speed GMLAN Serial Data (+) (circuit 7493) | U0074* | U0074* | U0074* | - |
| Powertrain High Speed GMLAN Serial Data (-) (circuit 7494) | U0074* | U0074* | U0074* | - |
| Ground | - | U18A2 | - | - |
| * Other DTCs may set with this fault. | ||||