Diagnostic Fault Information
| Circuit | Short to Ground | Open/High Resistance | Short to Voltage | Signal Performance |
|---|---|---|---|---|
| B+ | U182A* | U182A | - | - |
| Ignition | U182A* | U182A | - | - |
| Accessory Wake Up Serial Data | U1814, U182A* | U182A* | - | - |
| Powertrain High Speed GMLAN Serial Data (+) | U0074* | U0074, U182A* | U0074* | - |
| Powertrain High Speed GMLAN Serial Data (-) | U0074* | U0074, U182A* | U0074* | - |
| Ground | - | U182A* | - | - |
| * Multiple DTCs may be set and multiple symptoms including a no start condition may occur. | ||||