Follow these instructions to keep the ATF cooler cleaner working properly:
Replace the two magnetic nonbypass spin-on filters after every 20 hours of use, based on the hour meter, or when you notice a restriction in the ATF flow.
Check the level and condition of the fluid in the tank before each use.
Replace the ATF in the tank when it looks dark or dirty.

A/T System Description - Hydraulic Controls (A/T)
Hydraulic ControlsThe valve body includes the main valve body,
the regulator valve body, and the servo body. The ATF pump is driven by
splines on the end of the torque converter which is atta ...
Multiplex Integrated Control System Description
Body Controller Area Network (B-CAN) and Fast Controller
Area Network (F-CAN)
The body controller area network (B-CAN) and the fast controller area network
(F-CAN) share information between ...