Diagnostic Fault Information
WARNING: This page is about a different car, the 2008 Isuzu i-370, 2008 Isuzu i-290, 2008 GMC Canyon, and 2008 Chevrolet Colorado. However, it is still accessible from the selected car via links, so may be relevant.
Scan Tool Does Not Communicate with Class 2 Device
| Circuit | Short to Ground | Open/High Resistance | Short to Voltage | Signal Performance |
|---|---|---|---|---|
| Class 2 Serial Data | 1 | U1001-U1254 | 1 | - |
| Ground (DLC, terminal 5) | - | 1* | - | - |
| * An open in the DLC ground circuit terminal 5 will only effect the communication with the scan tool. The vehicle modules will still communicate. 1. No communication on any class 2 serial data module |
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