Hi guys, Can someone give instructions for going into the service mode for Komatsu excavators? I've heard of a way to press the button behind the display and then you can scroll through a more detail error code list. Would be great if someone can post the instructions here. Our Komatsu PC120-6 engine cannot be switched off by key and also the engine speed control knob is not resounding. The engine does start up but the alarm is constantly going off while its on. Any helps appreciated guys
Oh and E02 and E05 are displayed on the screen