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Home >> Buick >> 2012 >> Regal Turbo, Automatic Trans >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Communication Devices >> Data Communications System >> Diagnostic Information and Procedures >> DTC U0100 - U02FF (with HP6) >> Diagnostic Fault Information

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