Theory Of Operation
WARNING: This page is about a different car, the 2013 RAM 1500. However, it is still accessible from the selected car via links, so may be relevant.
The purpose of the diagnostic is to monitor the electrical failures of the park pawl sensor. These electrical failures include short to battery, short to ground and open circuit on either of the two pins of the park pawl sensor. All failure modes require the replacement of the Transmission Control Module Assembly (TCMA).