GODIAG PIRT Power Probe is a multi-function circuit tester with built-in diagnostic power. It is the best electrical tester for reducing diagnostic time in all 6- to 40-volt vehicle electrical systems.This is an advanced power circuit probe tester and more than your typical tester. It will do relay resting, fuel injector testing and cleaning as well.GODIAG GT101 PIRT Power Circuit Probe, Relay and Fuel Injector Tester 4 in 1 What is GODIAG GT101?GODIAG PIRT Power Probe is a multi-use circuit-tester with built-in diagnostic power. It is the best electrical tester for reducing diagnostic time in all 6 to 40-volt vehicle electrical systems. Undoubtedly it is the most versatile and practical tool ever for its users.This tool simplifies the testing of fuse boxes, verifies the correct operation of motors, lights, relays, sensors, wires, and communication-circuits. The large LCD color display makes for easy viewing in direct sunlight or complete darkness. Burst Points:4 in 1 Multi-function Circuit Tester Power Probe: diagnose an open circuit, short circuit, detect positive and negative circuit and pulse current of power lines. When the vehicles headlights, turn signals, lift windows, sunroofs and other functions fail, GT101 can be used to detect the circuit voltage or supply power for these components to find out whether it is a circuit problem or component damage.Fuel injector tester and cleaner: GT101 has a DIY Injector Cleaner adaptor kit, it is supporting DIY cleaning the fuel injector nozzle, removing the injector from the engine, it can be cleaned separately. When the injector is clogged, you can use it to save expensive nozzles, This DIY Injector Cleaner adaptor kit is easy to clean most car and motorcycle fuel injectors.Relay tester: When the cars headlights, turn signals, horn and engine starter do not work, and there is no problem with these components after detection, you can check the relay switch.20ft Extension Cable & Flashlight: contains 20ft/242inches long cable, which provides excellent accessibility to test along with the large vehicles such as trucks, buses, engineering vehicles, vessels, tractors, mining vehicles, and other vehicles that use DC circuits. Moreover, it has a built-in flashlight that will illuminate your work area even at night. Built-in headlight allows you to work in the dark area, there will be a beep tone when detecting, operate the tool without looking at the menu once you are familiar with the tone. 20ft cable provides excellent accessibility to test along with the vehicle.Overload Protection: a built-in 10 amp circuit breaker to prevent overloading and cooking a circuit. The output current can be reversed to form a loop power, and when the current exceeds 20AWide vehicle coverage: support 6-40V cars, boats, trailers, ATVs, motorhomes, and many other vehicles.Main Functions of GODIAG GT101 Power Probe:A voltmeter with LED displayGround testActivate componentsProvide a ground connectionContinuity meterTest fuel injector and clean itThe ability to test relays.Find shorts directly from the fuse or relay panel GODIAG GT101 Circuit Tester Function in Detail:1. Circuit Troubleshooting Test (Short Circuit, Open Circuit) When the vehicles headlights, turn signals, lift windows, sunroofs and other functions fail, GT101 can be used to detect the circuit voltage or supply power for these components to find out whether it is a circuit problem or a component damage. 1) According to the circuit diagram, locate the fault point that may have the problem, and the GT101 electric tester can detect the positive and negative electricity. 2) Detect whether the circuit has normal positive or negative electricity. 3) Input positive voltage to the malfunctioning component (for example, headlight or motor). If the component works normally, it means that the circuit may be open. Otherwise, it means that the component is damaged. 2. Relay Test When the cars headlights, turn signals, horn and the engine starter do not work, if there is no problem with these components after detection, you can check the relay switch. After the relay is removed from the car, connect the adapter based on the connection of the relay. 3.Fuel Injector Test When the vehicle has difficulty in starting, acceleration and fuel consumption, etc, it is necessary to check the fuel injector. When detecting the fuel injector, if the fuel injector is driven to open or close, the ammeter shows the normal value and the fuel injector woks normally, it means that the fuel injector is normal. Otherwise, it means that the fuel injector is damaged. 4. Fuel Injector Cleaning When the fuel injector is blocked, the fuel injection is not smooth. There are carbon deposits and thick sticky substance in the gap of the fuel injector. The designed fuel injection volume or atomization effect cannot be achieved, it needs to be cleaned. 1) Prepare a fuel injector cleaner pressurized can or a carburetor cleaner pressurized can(nozzle diameter of the pressurized cans : 4mm) 2) Hold the manual cleaning tool tightly with your hand, and firmly fix the fuel injector with your fingers to prevent the pressure of the cleaner can from washing away the the fuel injector. 3) Pay attention to the hazards of liquid to human body during manual cleaning, and take protective measures. Do not operate in dangerous places with open flames because the pressurized cans are extremely flammable. Choose an open place to facilitate the discharge of cleaning liquid.) 5.Used with the Wire Piercing Probe 1) First, turn the red knob and pull down the spring clip to an appropriate position, so that the spring clip can clamp the line under test. 2) Screw the red knob again to make sure the probe and the line under test are in good contact. 3) Insert the banana plug cable at the end of it (GT103 does not have a voltage and current display, and you can read the voltage of the line under test with a multimeter) 4) Plug the other end of banana plug cable into the GT101(also can be used with GT102 or GT103) 5) After reading the voltage, unplug the cable, turn the knob and pull down the spring clip, finally remove the test wire. GODIAG GT101 Vehicle Coverage:GODIAG circuit tester can support 6-40V cars, boats, trailers, ATVs, motorhomes, and many other vehicles. 20ft Extension Cable GODIAG GT101 Electrical Tester contains 20ft/242inches long cable, which provides excellent accessibility to test along the large vehicles such as trucks, buses, engineering vehicles, vessels, tractors, mining vehicles and other vehicles that use DC circuits. Warranty: 3 Years. To ensure your shopping experience, we provide 3 years warranty for all GODIAG host products free of charge. Parameter: Package Includes:1pc x Main Unit of GODIAG GT1011pc x Clip to Connect Battery1pc x Probe1pc x Probe Cap1pc x Fuel Injector Test Lead1pc x 10mm Fuel Injector Cleaning Connector1pc x 12mm Fuel Injector Cleaning Connector1pc x Simple Relay Test Adapter5pcs Simple Relay Connection Leads1pc x Instruction 1pc x optional Electric Circuit Cigarette Lighter Cable Godiag GT101 vs GT102 vs Topdiag P200 vs Autel PS100ItemGoDiag GT101 AD179GoDiag GT102 AD180TOPDIAG P200 AD176AUTEL PS100 AD46Image DC Voltage√√√√AC VoltageXX√√Positive and negative voltage output √√√√Component activation√√√√Current√X√√ResistanceXX√√Open circuit detection√√√√Short circuit detection√√√√Fuel injector test√√√XFuel injector cleaning √√XXRelay test √√√XOscilloscope functionXX√XFlashlight√√√√