LEMON Manuals: Even more car manuals for everyone
Home >> Jeep >> 2009 >> Commander Overland, 4WD >> Repair and Diagnosis >> External Pages >> Different car >> Section 119 (Transmission Control Module (TCM) - Electrical Diagnostics) >> DTC Troubleshooting >> P0731-Gear Ratio Error In 1ST >> Theory Of Operation

Theory Of Operation

WARNING: This page is about a different car, the 2009 Jeep Grand Cherokee. However, it is still accessible from the selected car via links, so may be relevant.

The Transmission Control Module (TCM) constantly calculates the transmission ratio based on the input speed sensor 1 and 2 (N2-N3) signals and the calculated output shaft speed. The intent of this diagnostic is to detect if the transmission is slipping or an invalid gear ratio is present.

scientia non olet · About LEMON Manuals