СИСТЕМА ECD (для клапана регулирования всасывания) СИСТЕМА ДИАГНОСТИКИ


  1. DESCRIPTION

    A01IR1QE01

    1. When troubleshooting a Euro-OBD (On-Board Diagnostic) vehicle, the GTS or OBD scan tool must be connected to the DLC3 (Data Link Connector 3) of the vehicle. Various data in the vehicle's ECM (Engine Control Module) can be then read.

    2. Euro-OBD regulations require that the vehicle's on-board computer illuminates the MIL (Malfunction Indicator Lamp) in the instrument panel when the computer detects malfunctions in:


      1. The emission control system and components.

      2. The powertrain control components (which affect vehicle emissions).

      3. The computer itself. If the malfunction does not recur in 3 consecutive trips, the MIL turns off automatically but the DTCs remain recorded in the ECM memory.

    3. To check the DTCs, connect the GTS to the DLC3. The GTS displays DTCs, freeze frame data, and a variety of engine data. The DTCs and freeze frame data can be cleared with the GTS (refer to DTC Check/Clear Click here.

  2. 2-TRIP DETECTION LOGIC

    When a malfunction is first detected, the malfunction is temporarily stored in the ECM memory (1st trip). If the same malfunction is detected during the next subsequent drive cycle, the MIL is illuminated (2nd trip).

  3. FREEZE FRAME DATA

    The ECM records vehicle and driving condition information as freeze frame data the moment a DTC is stored. When troubleshooting, freeze frame data can be helpful in determining whether the vehicle was moving or stationary, whether the engine was warmed up or not, whether the air fuel ratio was lean or rich, as well as other data recorded at the time of a malfunction.

  4. DLC3 (Data Link Connector 3) Click here

  5. INSPECT BATTERY VOLTAGE

    If the voltage is below 11 V, recharge or replace the battery before proceeding to the next step.

  6. CHECK MIL


    1. A01IR1QE01

      The MIL illuminates when the ignition switch is turned to ON and the engine is not running.

      Tech Tips

      If the MIL is not illuminated, check the MIL circuit Click here.

    2. When the engine is started, the MIL should turn OFF. If the MIL remains ON, the diagnosis system has detected a malfunction or abnormality in the system.