Diagnostic Fault Information
| Circuit | Short to Ground | Open/High Resistance | Short to Voltage | Signal Performance |
|---|---|---|---|---|
| B+ | U1858* | U1858 | - | - |
| Ignition | U1858* | U1858* | - | - |
| Wake-Up Signal | P06E4* | U1858* | - | - |
| Chassis High Speed GMLAN Serial Data (+) | U0077* | U1858* | U0077* | - |
| Chassis High Speed GMLAN Serial Data (-) | U0077* | U1858* | U0077* | - |
| Ground | - | U1858* | - | - |
| * Multiple DTCs may set and multiple symptoms including a no start condition may occur. | ||||