Control system hand-held power tool use of a control system and method of controlling

A method of controlling a hand-held power tool comprising an internal combustion engine, a working tool, and a centrifugal clutch, the centrifugal clutch connecting the internal combustion engine with the working tool, wherein the internal combustion engine has a clutch-in speed above which the centrifugal clutch engages and the internal combustion engine drives the working tool, wherein the hand-held power tool further comprises a control system comprising an electronic control logic, a first sensor, and a second sensor, wherein a first conductive path comprises the first sensor and a second conductive path comprises the second sensor, wherein the first conductive path and the second conductive path are connected to an input of the electronic control logic, wherein the first conductive path and the second conductive path are connected to a fixed voltage potential of the control system, wherein the first conductive path has a first electrical property and the second conductive path has a second electrical property, the first electrical property and the second electrical property together are different from at least one of the first electrical property and the second electrical property, and wherein the method comprises steps of:

• outputting DC voltage, a pulsed DC voltage, or an AC voltage on the output of the electronic control logic,
• measuring a voltage or current at the input of the electronic control logic, and
• detecting a state of the first sensor or the second sensor based on the measured voltage or current.