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Home >> Dodge and Ram >> 2018 >> Charger Pursuit, 5.7L Eng VIN T, 4WD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 32 ((Electronic Shift Module (ESM) - Electrical Diagnostics - 8HP70 Automatic Transmission)) >> DTC Troubleshooting >> U0101-08-Lost Communication With TCM-Bus Signal / Message Failures >> Theory Of Operation

Theory Of Operation

WARNING: This page is about a different variant/trim than selected.

The Electronic Shift Module (ESM) communicates with other controllers on the Controller Area Network (CAN) C bus and CAN Dedicated Powertrain (DPT) bus. The ESM expects to receive certain messages at certain time intervals from other controllers. If one message is missing, the ESM will not take any action. If more than one message is missing, the ESM will set a Diagnostic Trouble Code (DTC).

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