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Home › Cadillac › 2014 › XTS Base › Repair and Diagnosis › Engine Performance › System › Data Communication System › Diagnostic Information and Procedures › DTC U184A: Lost Communication with Body Control Module › Diagnostic Fault Information

Diagnostic Fault Information

Circuit Short to Ground Open/High Resistance Short to Voltage Signal Performance
B+ U184A, U0140 U184A, U0140 - -
Ignition U184A, U0140 U184A, U0140 - -
Low Speed GMLAN Serial Data U0078* U0078, U184A U0078* -
Ground - U184A, U0140 - -
* Scan Tool Does Not Communicate With Low Speed GMLAN Device
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