You can check ACPR to RV-4 yourself (preferably on a free closed platform). The actions are as follows.
Preheat the box to a working temperature of 50 to 80 C. This can be done in a car for a few minutes.
Put the lever in position D and press the gas pedal to the point. Checking for gearshift points:
-From 1 to 2 at 55-63 km/h;
-From 2nd to 3rd at 102-112 km/h;
-From 3rd to 4th at 156,163 km/h;
-From 4th to 3rd at 148 to 163 km/h;
-From 3rd to 2nd at 94-104 km/h;
-From the 2nd to the 1st, 44-51 km/h.
In the case of gearshift, there shall be no impact, noise, vibration or slip.