ECD SYSTEM PRECAUTION


  1. INITIALIZATION AND REGISTRATION

    Note


    • When the ECM and/or the other component(s) mentioned below are replaced, perform the following utility items, referring to the corresponding Initialization and Registration procedure.

    • If the ECM is replaced, register the ECU communication ID for Engine Immobiliser System (Refer to the Service Bulletin for Registration).

    Tech Tips

    When the ECM and other component(s) are replaced at the same time, perform the following utility items by following the instructions shown on the GTS display, starting with the ECM.

    Replacement Part Utility Item See page
    ECM Learning Values Save

    Click here

    Learning Values Write

    Click here

    Injector Assembly Injector Compensation

    Click here

    Fuel Supply Pump Assembly Supply Pump Learning Value Reset

    Click here

    Exhaust Manifold Converter Sub-assembly (Catalytic Converter) DPF History Information Reset

    Click here

    NOx Storage Catalyst Learning Value Reset

    Click here

    Air Fuel Ratio Sensor O2 Sensor Learning Value Reset

    Click here

    Mass Air Flow Meter Air Flow Meter Learning Value Reset

    Click here

    EGR Valve Assembly EGR Learning Value Reset

    Click here

    Differential Pressure Sensor Differential Pressure Learning Value Reset

    Click here

    Swirl Control Valve Swirl Valve Learning Value Reset

    Click here

    Turbo Pressure Sensor Assembly Upstream Turbine Pressure Learning Value Reset

    Click here

    Pressure Discharge Valve Fuel PCV Compensation Value Reset

    Click here

    Engine Assembly Injector Compensation

    Click here

    Tech Tips


    • When the ECM must be replaced, before replacing the ECM, perform the "Learning Values Save" function using the GTS. Then after installing the new ECM, perform all of the initialization/registrations for the "Learning Values Write" function by following the instructions shown on the GTS display.

    • After replacing injector assembly, perform the "Injector Compensation" function using the GTS.

    • After replacing the engine assembly, perform the "Injector Compensation" function using the GTS.

  2. INJECTOR COMPENSATION CODE

    A004UBEE01
    Text in Illustration
    *a Example
    *b Injector Compensation Code

    Tech Tips

    Each injector assembly has different fuel injection characteristics. In order to optimize the fuel injections, the ECM uses the compensation codes to balance the different fuel injections between each injector assembly. Injector compensation codes are 7-digit, alphanumeric values printed on the head of each injector assembly.

    Note

    If an incorrect injector compensation code is input into the ECM, the engine assembly may rattle or engine idling may become rough. In addition, engine failure may occur and the life of the engine may be shortened.

  3. FOR USING GTS

    CAUTION:


    • Read the instruction manuals before using the GTS.

    • Prevent the GTS cable from being caught on the pedals, shift lever and steering wheel when driving with the GTS connected to the vehicle.

    • When driving the vehicle for testing purposes and using the GTS, two persons are required. One for driving the vehicle, and the other for operating the GTS.

  4. IGNITION SWITCH EXPRESSIONS


    1. The type of ignition switch used on this model differs according to the specifications of the vehicle. The expressions listed in the table below are used in this section.

      Expression Ignition Switch (Position) Engine Switch (Condition)
      Ignition switch off LOCK Off
      Ignition switch ACC ACC On (ACC)
      Ignition switch ON ON On (IG)
      Engine start START Start