ON-LED flas­hes yel­low, no func­tion, not reco­gni­zed by PC

If this error occurs with your CAN-Bus Tes­ter 2, plea­se check the power sup­p­ly. It must sup­p­ly a sta­ble 24 V.

The tes­ter can be tes­ted with 9 V … 36 V or sup­pli­ed from the CAN-Bus (if available). Plea­se note that for the wiring test 24 V are requi­red at the “Power Sup­p­ly” connection.

In this con­text, this artic­le is also worth mentioning.