Theory Of Operation
WARNING: This page is about a different car, the 2017 Jeep Cherokee. However, it is still accessible from the selected car via links, so may be relevant.
This diagnostic detects a sticking Dog Clutch A when the shifter is shifted into the REVERSE position. If the error is detected, all clutches will be disengaged and the Malfunction Indicator Lamp (MIL) will not be illuminated. The diagnostic monitors the Input and Output Speed sensor signals and compares them to calibrated values to determine if the failure is present.