1. GODIAG GT103 PIRT Mini Pirt Electric Circuit Tester is a special circuit maintenance testing tool which is developed for automobile maintenance workers and engineers. 2. GODIAG GT103 can be used to diagnose an open circuit, short circuit, detect positive and negative circuit and pulse current of power lines; and support the testing of lighting lamp,window lift motor, horn, ECU control Unit power supply and other individual component, vehicle component circuit. 3. Moreover, its function also covers the detection of relays and fuel injectors as well as the cleaning of fuel injectors. 4. The output current can be reversed to form a loop power, and when the current exceeds 20A, it automatically trip to protect the device and extend the service life. 5. GODIAG GT103 can detect all 0-80v electronic systems, greatly shortening the detection time. The connection with the car battery is simple and easy to use.