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Home >> Jeep >> 2011 >> Compass Base, 2.0 A, Automatic CVT >> Repair and Diagnosis >> Transmission >> Transmission Control Systems >> (Transmission Control Module (TCM) - Electrical Diagnostics) >> DTC Troubleshooting >> P161B-Battery Disconnect / TCM Internal >> Theory of Operation

Theory of Operation

The Transmission Control Module (TCM) calculates the checksum in the EEPROM and compares it to the stored checksum value. If the calculated checksum value does not match the stored checksum value the TCM sets the DTC and illuminates the MIL.

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