Fuel injector detection method

You can use an LED test light to connect it to the two sockets of the fuel injector plug and turn on the ignition switch.
(1) Start the engine, if the LED light is still not on, it indicates that the C-pole and E-pole of the transistor are open circuit.
(2) When starting the engine, the LED light will flash, indicating that neither the sensor nor the computer is good
(3) If the LED light remains on, it indicates a problem with the short C-pole and E-pole of the transistor.