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Home >> Fiat >> 2017 >> 500 E >> Repair and Diagnosis (Single Page) >> Transmission >> Automatic Trans >> Electric Vehicle Control Unit (EVCU) Module - DTCS B12A4-11 To P1138-00 - 500 - Electric >> DTC Troubleshooting >> P061A-00 Internal Control Module Torque Performance >> Theory Of Operation

Theory Of Operation

The Electric Vehicle Control Unit (EVCU) performs several basic system self diagnostic checks to ensure proper controller operation.

These checks include read/write memory, checksum, cyclic redundancy check (CRC), main processor and several other internal diagnostics. These internal test are usually implemented on the controllers initial power up.