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Home >> Chevrolet >> 2012 >> Traverse LS, AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 19 (Data Communication System) >> Diagnostic Information and Procedures >> Scan Tool Does Not Communicate with Mid Speed GMLAN Device >> Diagnostic Fault Information

Diagnostic Fault Information

WARNING: This page is about a different car, the 2010 Cadillac SRX. However, it is still accessible from the selected car via links, so may be relevant.
Circuit Short to Ground Open/High Resistance Short to Voltage Signal Performance
Mid Speed GMLAN Serial Data (+) 1 U0100-U0299* 1 -
Mid Speed GMLAN Serial Data (-) 1 U0100-U0299* 1 -
Ground (DLC, terminal 5) - 1 - -
* No communications with one or more mid speed GMLAN modules. An open in only one mid 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 on any mid speed GMLAN module.
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