Diagnostic Fault Information
| Circuit | Short to Ground | Open/High Resistance | Short to Voltage | Signal Performance |
|---|---|---|---|---|
| B+ | U0100 - U02FF | U0100 - U02FF | - | - |
| Ignition | U0100 - U02FF, U1814, U2099 | U0100 - U02FF | - | - |
| Object High Speed GMLAN Serial Data (+) | U0075 | U0100 - U02FF | U0075 | - |
| Object High Speed GMLAN Serial Data (-) | U0075 | U0100 - U02FF | U0075 | - |
| Chassis High Speed GMLAN Serial Data (+) | U0074, U0077 | U0100 - U02FF | U0074, U0077 | - |
| Chassis High Speed GMLAN Serial Data (-) | U0074, U0077 | U0100 - U02FF | U0074, U0077 | - |
| Mid Speed GMLAN Serial Data (+) | U0074 | U0100 - U02FF | U0074 | - |
| Mid Speed GMLAN Serial Data (-) | U0074 | U0100 - U02FF | U0074 | - |
| High Speed GMLAN Serial Data (+) | U0073, 2 | U0100 - U02FF | U0073, 2 | - |
| High Speed GMLAN Serial Data (-) | U0073, 2 | U0100 - U02FF | U0073, 2 | - |
| Low Speed GMLAN Serial Data | U0078, 1 | U0100 - U02FF | U0078, 1 | - |
| Ground | - | U0100 - U02FF | - | - |
| 1. Scan tool does not communicate with most low speed GMLAN device 2. Scan tool does not communicate with most high speed GMLAN device |
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