Diagnostic Fault Information
| Circuit | Short to Ground | Open/High Resistance | Short to Voltage | Signal Performance |
|---|---|---|---|---|
| Module B+ | U0100-U02FF | U0100-U02FF | - | - |
| Module Ignition | U0100-U02FF | U0100-U02FF | - | - |
| Accessory Wakeup Serial Data | U1814 | U0100-U02FF | - | - |
| Serial Data Communication Enable | U2099 | U0100-U02FF | - | - |
| Chassis High Speed GMLAN Serial Data (+) | 4 | U0100-U02FF | 4 | - |
| Chassis High Speed GMLAN Serial Data (-) | 4 | U0100-U02FF | 4 | - |
| Mid Speed GMLAN Serial Data (+) | 3 | U0100-U02FF | 3 | - |
| Mid Speed GMLAN Serial Data (-) | 3 | U0100-U02FF | 3 | - |
| High Speed GMLAN Serial Data (+) | 2 | U0100-U02FF | 2 | - |
| High Speed GMLAN Serial Data (-) | 2 | U0100-U02FF | 2 | - |
| Low Speed GMLAN Serial Data | 1 | U0100-U02FF | 1 | - |
| Module Ground | - | U0100-U02FF | - | - |
| 1. Scan tool does not communicate with low speed GMLAN device 2. Scan tool does not communicate with high speed GMLAN device 3. Scan tool does not communicate with mid speed GMLAN device 4. Scan tool does not communicate with chassis high speed GMLAN device |
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