When Monitored

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 runs continuously when the following conditions are met:

Ignition is on.
Engine is not being cranked.
Power Transfer Unit (PTU) Shift Actuator voltage is between 6.0 and 16.0 volts for more than 500 ms.
No PTU Shift Actuator under/over voltage DTCs set.
No PTU Loss of Communication DTCs set.