how 2 check ur injector? get a small bulb wif complete wiring (got supply n ground terminal @ + n -), then disconnect ur injector wire (got clip) n put d + n - wire (dat connected wif bulb) 2 ur injector, put ur ignition switch 2 ACC position n monitor d bulb, if d bulb blinking then there's nothing wrong wif ur ECU, but if d bulb keep ON or OFF w/out blinking then there's must b something wrong wif ur ECU, d injectors seldom got faulty........ took it from my xperience :-)......
correction, put d wires 2 ur injector supply not d injector :-)