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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 >> U0103-Lost Communication With Electric Gear Shift Module >> Theory Of Operation

Theory Of Operation

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The Transmission Control Module (TCM) receives information from the Electronic Shift Module (ESM) over a dedicated CAN C BUS. The CAN C BUS is a high speed communication BUS that allows real time control capability between these controllers.