Which Sensor Can Be Tested By Unbolting The Sensor And With The Ignition On?

Which Sensor Can Be Tested By Unbolting The Sensor And With The Ignition On? A G-sensor is tested by unbolting it with the ignition on, engine off (KOEO) and reviewing scan tool data for correct operation. What type of sensor is used as a height sensor on vehicles equipped with an electronically controlled suspension group