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The Delphi E3 electronic unit injectors used on the tier3 engines have two electronically controlled solenoids. Injector activated.ġ Check the cables between the injector and the engine control unit.ģ Check the cable connection to the injector.
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Let the engine run at idle speed without any load and see if the faultcode reappear.Ģ Perform test of cylinder compression using the VODIA tool. If the engine load is too unsymmetrical the compensation is not enough and a fault code will be set.ġ Clear the fault code with the Vodia tool. At idle speed the engine control unit is trying to compensate for uneven running by adding more or less fuel to the injectors, cylinder balanc- ing. If a fault code is set when the engine has an unsymmetrical load it can not be rectified. Injector activated and cylinder balancing above limit. (EMS2 pin: 36, 40, 44, 48, 52, 56 and 12, 16, 20, 24, 28, 32)Ģ Check the contact pressure in all sockets regarding the unit injectors in engine connector A.įMI 7 – Mechanical system not responding properly
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Open circuit in low voltage wiring side or high voltage wiring side.Injector activated and faulty voltage in injector high or low side. Short circuit to battery negative in high voltage injector wire.įMI 5 – Current below normal or open circuit.Short circuit to battery negative on the pin on the respective injector’s high voltage side.Injector activated and faulty voltage in injector high side. (Short to battery negative, injector high voltage side) Short circuit to battery voltage in low voltage injector wire.ġ Check the cable harness between injectors and engine control unit (EMS2).įMI 4 – Voltage below normal or shorted to lower voltage.Short circuit between high voltage and low voltage sides.Short circuit to battery voltage on the pin on the respective injector’s low voltage side.Injector activated and faulty voltage in injector low side. NOTICE! Identify which injector by the SID number. CIU: Flash codeĮlectrical fault: 7.1–7.6 Value fault: None.įaulty unit injector is shut off, engine runs on 5 cylinders. (Short to battery voltage, injector low voltage side)ĭCU: Engine warning in DCU display. MID 128, SID 1/2/3/4/5/6 Injector # 1-6 įMI 3 – Voltage above normal or shorted high