Diagnostic Fault Information
| Circuit | Short to Ground | Open/High Resistance | Short to Voltage | Signal Performance |
|---|---|---|---|---|
| B+ | U183A | U183A | - | - |
| Ignition | U183A | U183A | - | - |
| Serial Data Communication Enable | U1814, U2099 | U183A | - | - |
| Gateway Isolated High Speed GMLAN Serial Data (+) or High Speed GMLAN Serial Data (+) (9) |
U007C | U183A | U007C | - |
| Gateway Isolated High Speed GMLAN Serial Data (-) or High Speed GMLAN Serial Data (-) (9) |
U007C | U183A | U007C | - |
| Ground | - | U183A | - | - |