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Home >> Fiat >> 2012 >> 500 Pop, Standard Trans >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 4 ((Transmission Control Module (TCM) - Electrical Diagnostics)) >> Diagnosis And Testing >> P0604-Internal Control Module Random Access Memory (Ram) Error >> Theory Of Operation

Theory Of Operation

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The Transmission Control Module (TCM) performs basic system checks to ensure proper controller operation. This Diagnostic Trouble Code (DTC) sets when the TCM cannot correctly write to, or read from the RAM.

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