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一辆93款通用别克林荫大道乘用车,在更换过蓄电池后起动发动机,发动机正常运转5s后就会自动熄火,重新起动发动机后,发动机只能正常运转5s左右。在维修过程中,用测试灯测试喷油器,发现测试灯亮5s后就自动熄灭。检查喷油器的电源电路及其搭铁情况,均良好。更换了发动机ECM,该故障仍未能排除。再次仔细分析其故障现象后认为,造成该故障的原因很有可能是车身防盗系统在起作用,于是断开防盗控
A 93 General Buick Boulevard passenger car, after replacing the battery to start the engine, the engine will run automatically after 5s normal turn off, restart the engine, the engine can only be normal operation 5s or so. In the maintenance process, test the injector with a test light and found that the test light turns off automatically after 5s. Check the injector power circuit and the ground situation, are good. Replaced the engine ECM, the fault still can not be ruled out. Once again carefully analyzed the phenomenon of failure that the cause of the failure is likely to be the body anti-theft system at work, so turn off security control