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Home >> Jeep >> 2013 >> Compass Limited, FWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 121 (Transmission Control Module (TCM) - Electrical Diagnostics) >> DTC Troubleshooting >> U1401-Implausible Engine Speed Signal Received >> Theory Of Operation

Theory Of Operation

WARNING: This page is about a different car, the 2012 Jeep Patriot and 2012 Jeep Compass. However, it is still accessible from the selected car via links, so may be relevant.

The Transmission Control Module (TCM) receives Engine rpm over the CAN Bus.

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