ECD SYSTEM(w/ DPF) INITIALIZATION

Tech Tips


  • After replacing any of the injector assemblies, perform both the "Injector Compensation" and the "Pilot Quantity Learning Values Reset" functions using the intelligent tester. If any of the injector assemblies and the ECM are replaced at the same time, perform the same initialization/registrations as when replacing the ECM.

  • After replacing the air fuel ratio sensor, perform the "A/F Sensor Compensation Reset" function using the intelligent tester. If the air fuel ratio sensor and the ECM are replaced at the same time, perform the same initialization/registrations as when replacing the ECM.

  • After replacing the DPF catalytic converter, perform the "DPF Deterioration Record Clear" function using the intelligent tester. If the DPF catalytic converter and the ECM are replaced at the same time, perform the same initialization/registrations as when replacing the ECM.

  • After replacing the engine assembly, perform both the "Injector Compensation" and the "Pilot Quantity Learning Values Reset" functions using the intelligent tester. If the engine assembly and the ECM are replaced at the same time, perform the same initialization/registrations as when replacing the ECM.


  1. When the diesel throttle body assembly, electric EGR valve assembly or turbocharger sub-assembly is replaced, perform initialization


    1. Connect the intelligent tester to the DLC3.

    2. Clear DTCs Click here.

    3. Turn the ignition switch to off within 10 seconds of clearing DTCs and wait for 30 seconds.

      Tech Tips

      The ignition switch must be turned off before DTC recurs.

    4. Turn the ignition switch to ON and wait for 10 seconds or more.

  2. Pilot Quantity Learning Values Reset (When replace all injector assemblies)

    Tech Tips

    When any injector assemblies and/or the engine assembly are replaced, the pilot quantity learning values stored in the ECM must be reset.


    1. Connect the intelligent tester to the DLC3.

    2. Turn the ignition switch to ON and turn the tester on.

    3. Enter the following menus: Powertrain / Engine and ECT / Utility / Pilot Quantity Learning Values Reset.

    4. A01VK5V

      Press "Next".

      Tech Tips

      Confirm that the ignition switch is ON and the engine is stopped.

    5. A01VLZ7

      Select "All Injectors" and press "NEXT".

    6. A01VF35

      Press "EXIT".

  3. Pilot Quantity Learning Values Reset (When replacing specific any of the injector assemblies)

    Tech Tips

    When any injector assemblies and/or the engine assembly are replaced, the pilot quantity learning values stored in the ECM must be reset.


    1. Connect the intelligent tester to the DLC3.

    2. Turn the ignition switch to ON and turn the tester on.

    3. Enter the following menus: Powertrain / Engine and ECT / Utility / Pilot Quantity Learning Values Reset.

    4. A01VK5V

      Press "Next".

      Tech Tips

      Confirm that the ignition switch is ON and the engine is stopped.

    5. A01VLON

      Select "Specific Injector(s)" and press "NEXT".

    6. A01VL7C

      Select the cylinder(s) where injector(s) was replaced, and press "NEXT".

    7. A01VF35

      Press "EXIT".

  4. DPF Deterioration Record Clear

    Tech Tips


    • This value is the ash accumulation volume in the DPF catalytic converter calculated by the ECM. If the ash accumulation volume in the DPF catalytic converter increases, the difference in pressure in front of and behind the DPF catalytic converter will increase. The difference in pressure in front of and behind the DPF catalytic converter is offset depending on the volume of accumulated ash.

    • When a DPF catalyst is replaced, the DPF deterioration record stored in the ECM must be cleared.


    1. Connect the intelligent tester to the DLC3.

    2. Turn the ignition switch to ON and turn the tester on.

    3. Enter the following menus: Powertrain / Engine and ECT / Utility / DPF Deterioration Record Clear.

    4. A01VFJ6

      Press "Next".

      Tech Tips

      Confirm that the ignition switch is ON and the engine is stopped.

    5. A01VE34

      Press "Next".

  5. A/F Sensor Compensation Reset

    Tech Tips

    When an air fuel ratio sensor is replaced, the A/F sensor compensation learning value stored in the ECM must be reset.


    1. Connect the intelligent tester to the DLC3.

    2. Turn the ignition switch to ON and turn the tester on.

    3. Enter the following menus: Powertrain / Engine and ECT / Utility / A/F Sensor Compensation Reset.

    4. A01VI0H

      Press "Next".

      Tech Tips

      Confirm that the ignition switch is ON and the engine is stopped.

    5. A01VF8Z

      Press "EXIT".