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Home >> Fiat >> 2012 >> 500c Pop, Automatic Trans >> Repair and Diagnosis >> External Pages >> Different car >> Section 68 ((Transmission Control Module (TCM) - Electrical Diagnostics) >> Diagnosis And Testing >> P0705-Transmission Range Sensor "A" Circuit (PRNDL Input) >> Theory Of Operation

Theory Of Operation

WARNING: This page is about a different car, the 2013 Fiat 500c and 2013 Fiat 500. However, it is still accessible from the selected car via links, so may be relevant.

The Transmission Control Module (TCM) performs basic system checks to ensure proper controller operation. This Diagnostic Trouble Code (DTC) sets if the transmission range is invalid for any given gear. The Transmission Range Sensor (TRS) is part of the TCM and cannot be replaced separately.

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