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Home › Cadillac › 2016 › CTS Base, RWD › Repair and Diagnosis › Engine Performance › System › Data Communication System › Diagnostic Information and Procedures › DTC U0078: Control Module Communication Low Speed CAN Bus Off › Circuit/System Verification

Circuit/System Verification

Ignition ON.
Verify DTC U0078 is not set.
- If DTC U0078 is set
  Refer to Scan Tool Does Not Communicate with Low Speed GMLAN Device .
- If DTC U0078 is not set
All OK