Is the check engine light on or been on since doing this? The ECM is in reduced power mode for a reason. You should have the ECM scanned for codes to see what's causing the issue. How did you remove the throttle plate? These systems are drive by wire systems. The ECM takes inputs from the sensor on the gas pedal (APP sensor, accelerator pedal position sensor) and uses those inputs for the fuel injectors pulse width and also moving the throttle plates. The throttle plates are controlled by a motor that is pulse width modulated and reverses the motor voltage to move the throttle plates in either direction. I'm posting the wiring diagram below to check the circuits, but since this happened while cleaning the throttle body, either some of the cleaner got into the throttle motor, or something happened to the motor while you were moving the plates around.
You can take the air boot back off, and with the key in the on position, engine not running, you should be able to see the throttle plates move with the gas pedal. But I don't think you're going to see that.
Checking the voltage to the throttle body is fairly easy, If you have a multimeter, you can back probe the connector at the throttle body. The grey wire is the 5-volt Reference feed wire, The purple and Dark Green wires are the Potentiometer signal wires going back to the ECM telling it how far open the throttle plates are. The Tan wire is the Ground. The brown and yellow wires control the motor for the throttle plates.
But get it scanned for codes, if there are no wiring issues or/and plates are not binding for some reason. You may have to replace the throttle body. AutoZone will scan the ECM for codes for free. Let us know what the code is, and we can give the code setting criteria and what exactly may have happened.
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Friday, December 3rd, 2021 AT 3:09 PM