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Home >> Chrysler >> 2012 >> 300 C, 4WD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 23 (Transmission Control Module (TCM) - DTCS P1D94 To U1479 - 8HP45 Automatic Transmission) >> Diagnosis And Testing >> U0002-Can C Bus Off Performance >> Theory Of Operation

Theory Of Operation

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The vehicle control modules communicate over the CAN C BUS. The Transmission Control Module (TCM) continuously monitors BUS activity. The CAN C BUS is used to communicate transmission MIL status to the PCM. If the PCM is unable to communicate with the TCM, a DTC sets and the PCM will illuminate the MIL.

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