When Monitored

WARNING: This page is about a different car, the 2016 RAM 3500 HD. However, it is still accessible from the selected car via links, so may be relevant.

This diagnostic runs continuously when the following conditions are met:

TCM supply voltage is between 10 and 16 volts.
The engine speed (CAN message) is greater than or equal to 550 RPM.
Ignition switch RUN position signal is detected via dedicated circuit to TCM.
There are no ignition switch related DTCs set.