Unfortunately, the throttle body is not covered under the Jeep powertrain warranty. Things that are covered by the powertrain warranty include the engine, transmission, and drive system, but the throttle body is not considered to be part of any of these elements for the sake of the warranty.
The throttle body will, however, be covered by the Jeep Limited Warranty. If you have issues with your throttle body before the initial warranty period is up, you’ll be able to get the problem fixed under warranty.