Diagnostic Fault Information
| Circuit | Short to Ground | Open/High Resistance | Short to Voltage | Signal Performance |
|---|---|---|---|---|
| B+ | U2612 | U2612 | - | - |
| Ignition | U2612 | U2612 | - | - |
| Wake-Up Signal | U1814, U2099 | U2612 | - | - |
| High Speed GMLAN Serial Data (+) | U0073, 1 | U2612 | U0073, 1 | - |
| High Speed GMLAN Serial Data (-) | U0073, 1 | U2612 | U0073, 1 | - |
| High Voltage Energy High Speed GMLAN Serial Data (+) | U007A, 2 | U2612 | U007A, 2 | - |
| High Voltage Energy High Speed GMLAN Serial Data (-) | U007A, 2 | U2612 | U007A, 2 | - |
| Ground | - | U2612 | - | - |
| 1. Scan Tool Does Not Communicate With High Speed GMLAN Device 2. Scan Tool Does Not Communicate With High Voltage Energy High Speed GMLAN Device |
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