Mike's Workshop Manuals: Service manuals for every vehicle
Home >> Jeep >> 2014 >> Cherokee Sport, AWD >> Repair and Diagnosis >> Transmission >> Transmission Control Systems >> Transmission Control Module (TCM) - DTCS P1C4E-00 To U1467 >> Diagnosis And Testing >> U0404-Implausible Data Received From ESM >> Theory Of Operation

Theory Of Operation

The messages sent on a dedicated CAN BUS and are distinguished by an identifier (ID). Each CAN ID is defined to contain a certain number of bytes. The Transmission Control Module (TCM) verifies that it has received the proper number of bytes for each ID.