GSIC - Global Service Information Center

### ECD SYSTEM > MIL Circuit

## for Preparation Click here

## DESCRIPTION

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

## WIRING DIAGRAM

## INSPECTION PROCEDURE

NOTICE:

  If the ECM is replaced, the new ECM needs initialization (Click here).

1.CHECK MIL CONDITION

HINT:

  Use the table below to troubleshoot each problem symptom.

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

| B |

Go to step 4

A |

2.CHECK IF MIL TURNS OFF

1. Connect the intelligent tester to the DLC3.

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

1. Enter the following menus: Powertrain / Engine / DTC.

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

1. Enter the following menus: Powertrain / Engine / DTC / Clear.

1. Clear the DTC(s) (Click here).

1. Check if the MIL turns off.

   OK:
     MIL turns off.

| OK |

GO TO DTC CHART

NG |

3.CHECK HARNESS AND CONNECTOR

1. Disconnect the E5 ECM connector.

1. Turn the ignition switch ON.

1. Check that the MIL does not illuminate.

   OK:
     MIL does not illuminate.

| NG |

REPAIR OR REPLACE HARNESS AND CONNECTOR

OK |

REPLACE ECM

4.CHECK IF MIL ILLUMINATES

1. Check if the MIL illuminates when the ignition 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)