Diagnostic Fault Information
| Circuit | Short to Ground | Open/High Resistance | Short to Voltage | Signal Performance |
|---|---|---|---|---|
| B+ | U179D | U179D | - | - |
| Ignition | U179D | U179D | - | - |
| Accessory WakeUp Serial Data 2 | P06E4, U179D | U179D | - | - |
| Chassis High Speed GMLAN Serial Data (+) | U0077* | U179D, U0077* | U0077* | - |
| Chassis High Speed GMLAN Serial Data (-) | U0077* | U179D, U0077* | U0077* | - |
| Ground | - | U179D | - | - |
| * Other DTCs may set with this fault. | ||||