Ecd System Mil Circuit


DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

CHECK MIL

CHECK IF MIL TURNS OFF

CHECK WIRE HARNESS

CHECK IF MIL ILLUMINATES

CHECK COMBINATION METER ASSEMBLY (MIL CIRCUIT)

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


Toyota Fortuner. Ggn50, 60 Kun51, 61 Tgn51 Lan50.1Kd-Ftv Engine Control System.Ecd System.Ecd System Mil Circuit


INSPECTION PROCEDURE

NOTICE:
If the ECM is replaced, the new ECM needs initialization (Toyota Fortuner RM0000012X2005X.html).
1.CHECK MIL
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 / ECD / DTC / Clear.

  1. Clear the DTC(s) (Toyota Fortuner RM0000012WY005X.html).

  1. Check if the MIL turns OFF.

    OK:
    MIL turns OFF.


OK
GO TO DTC CHART
NG


3.CHECK WIRE HARNESS


    Toyota Fortuner. Ggn50, 60 Kun51, 61 Tgn51 Lan50.1Kd-Ftv Engine Control System.Ecd System.Ecd System Mil Circuit

  1. Disconnect the E4 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 ASSEMBLY (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)