Diagnostic Fault Information
| Circuit | Short to Ground | Open/High Resistance | Short to Voltage | Signal Performance |
|---|---|---|---|---|
| Powertrain High Speed GMLAN Serial Data (+) | U0074 | U0074, U0100-U02FF* | U0074 | - |
| Powertrain High Speed GMLAN Serial Data (-) | U0074 | U0074, U0100-U02FF* | U0074 | - |
| Ground (auxiliary data connector terminal 5) | - | U0074 | - | - |
| * An open in only one powertrain high speed GMLAN serial data circuit may allow degraded communication between the devices. | ||||