Diagnostic Fault Information
| Circuit | Short to Ground | Open/High Resistance | Short to Voltage | Signal Performance |
|---|---|---|---|---|
| B+ | U18D2 | U18D2 | - | - |
| Ignition | U18D2 | U18D2 | - | - |
| Accessory Wakeup Serial Data | U1814, U2099 | U18D2 | - | - |
| Powertrain Sensor High Speed GMLAN Serial Data (+) | U0076* | U0076, U18D2* | U0076* | - |
| Powertrain Sensor High Speed GMLAN Serial Data (-) | U0076* | U0076, U18D2* | U0076* | - |
| Ground | - | U18D2 | - | - |
| * Other DTCs may set with this fault. | ||||