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Symptom: TCM MESSAGE MISMATCH POSSIBLE CAUSES TCM COMMUNICATION FAILURE INSTRUMENT CLUSTER TEST ACTION APPLICABILITY 1 NOTE: Diagnose and repair any TCM DTCs before proceeding with this test. t, ensure PCI Bus communications with the TCM. Is the TCM communicating on the PCI Bus? All Yes → Replace the Instrument Cluster in accordance with the Service Information. No → Refer to COMMUNICATION category for the related symptom. Perform BODY VERIFICATION TEST - VER 1. 663 INSTRUMENT CLUSTER |