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Well that was about as helpful as a rubber crutch.
The complexity of the diagnostic procedure makes a "simple"' explanation improbable. Therefore, the best advice is to look up the procedure in the service manual and follow it to locate the specific point of failure.
Since the OP gave no identifying information as to his vehicle or which transmission he has, it is not possible to do anything other than point him to the "book".
Rezvani's Latest Post-Apocalyptic Monster Is a Ford F-150 Raptor Underneath
Slideshow: Called the Fortress, the 850-horsepower pickup combines Raptor underpinnings with military-inspired features, survival equipment, and a starting price of $285,000.
