Backup Power Supply
WARNING: This page is about a different car, the 2008 Jeep Patriot and 2008 Jeep Compass. However, it is still accessible from the selected car via links, so may be relevant.
Transaxle assembly is protected by limiting the engine torque when the memory back-up power supply for controlling from the battery is not supplied to the TCM. Normal status is restored when turning the ignition switch OFF to ON after power is normally supplied