Diagnostic Fault Information
| Circuit | Short to Ground | Open/High Resistance | Short to Voltage | Signal Performance |
|---|---|---|---|---|
| Chassis High Speed GMLAN Serial Data (+) | 1 | U0100-U02FF* | 1 | - |
| Chassis High Speed GMLAN Serial Data (-) | 1 | U0100-U02FF* | 1 | - |
| Ground (DLC, terminal 5) | - | 1 | - | - |
| * No communications with one or more chassis high speed GMLAN modules. An open in only one chassis high speed GMLAN serial data circuit may allow degraded communication between the modules. An open between the data link connector (DLC) and the first splice will only effect the communication with the scan tool. The vehicle modules will still communicate. 1. No communication with any chassis high speed GMLAN module |
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