ECD SYSTEM MIL Circuit

DESCRIPTION

If the ECM detects a malfunction, the MIL illuminates. The ECM then records the DTC in its memory.

WIRING DIAGRAM

A01BGTBE01

INSPECTION PROCEDURE

Note

After replacing the ECM, the new ECM needs registration Click here and initialization Click here.

PROCEDURE


  1. CHECK MIL CONDITION

    Tech Tips

    Use the table below to troubleshoot each problem symptom.

    Reference:
    Condition Proceed To
    MIL remains ON A
    MIL is not illuminated B

    B

    CHECK IF MIL ILLUMINATES Click here

    A

  2. CHECK IF MIL TURNS OFF


    1. Connect the intelligent tester to the DLC3.

    2. Turn the ignition switch ON and turn the intelligent tester ON.

    3. Enter the following menus: Power train / Engine / DTC.

    4. Check if DTCs have been stored. Take notes if there are DTCs.

    5. Enter the following menus: Power train / Engine / DTC / Clear.

    6. Clear the DTC(s) Click here.

    7. Check if the MIL turns OFF.

      OK
      MIL turns OFF.

    OK

    GO TO DTC CHART

    NG

  3. CHECK HARNESS AND CONNECTOR


    1. A01BBETE08

      Disconnect the B9 ECM connector.

    2. Turn the engine switch ON.

    3. Check that the MIL does not illuminate.

      OK
      MIL does not illuminate.

    NG

    REPLACE ECM

    OK

    REPAIR OR REPLACE HARNESS AND CONNECTOR

  4. CHECK IF MIL ILLUMINATES


    1. Check if the MIL illuminates when the engine switch is turned ON.

      OK
      MIL illuminates.

    OK

    END

    NG

  5. CHECK COMBINATION METER ASSY (MIL CIRCUIT)

    OK
    Combination meter circuit is normal.

    NG

    REPAIR OR REPLACE COMBINATION METER ASSEMBLY

    OK

    REPAIR OR REPLACE HARNESS AND CONNECTOR (COMBINATION METER - ECM)