Sfi System Mil Circuit


DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

CHECK MIL ILLUMINATION

READ VALUE USING GTS

CHECK WHETHER DTC OUTPUT RECURS

PERFORM ACTIVE TEST USING GTS

SFI SYSTEM - MIL Circuit


DESCRIPTION

The MIL (Malfunction Indicator Lamp) is used to indicate vehicle malfunctions detected by the ECM. When the ignition switch is turned to ON, power is supplied to the MIL circuit, and the ECM provides the circuit ground which illuminates the MIL.
The MIL operation can be checked visually: When the ignition switch is turned to ON, the MIL should be illuminated and should turn off after engine is started. If the MIL remains illuminated or is not illuminated, conduct the following troubleshooting procedure using the GTS.

WIRING DIAGRAM


Land Cruiser, Land Cruiser Prado. Grj150 Trj150,155 Kdj150,155 Lj150, Gdj150,155.2Tr-Fe Engine Control.Sfi System.Sfi System Mil Circuit


INSPECTION PROCEDURE

1.CHECK MIL ILLUMINATION

  1. Check the illumination condition of the MIL.

    Result
    MIL
    		Condition
    		Proceed to
    Illuminates → Turns off
    		Ignition switch ON → After engine is started
    		A
    Other than above
    		-
    		B


B
Go to step 2
A

CHECK INTERMITTENT PROBLEMS (LandCruiser RM000000VNL00AX.html)

2.READ VALUE USING GTS

  1. Connect the GTS to the DLC3.

  1. Turn the ignition switch to ON.

  1. Turn the GTS on.

  1. Check the communication between the GTS and ECM.

    HINT:
    It can be checked using the "Engine" item of the Data List.

    Result
    Result
    		Proceed to
    Communication is possible
    		A
    Communication is not possible
    		B


B
GO TO VC OUTPUT CIRCUIT (LandCruiser RM000001D6V0WFX.html)
A


3.CHECK WHETHER DTC OUTPUT RECURS

  1. Connect the GTS to the DLC3.

  1. Turn the ignition switch to ON.

  1. Turn the GTS on.

  1. Enter the following menus: System Select / Health Check.

  1. Check if any DTCs have been detected. Note down any DTCs.

    Result
    Result
    		Proceed to
    DTCs are not output
    		A
    Any DTCs is output
    		B


B
REPAIR CIRCUIT INDICATED BY OUTPUT DTC
A


4.PERFORM ACTIVE TEST USING GTS

  1. Connect the GTS to the DLC3.

  1. Turn the ignition switch to ON.

  1. Turn the GTS on.

  1. Enter the following menus: Body Electrical / Combination Meter / Active Test / Check Engine Indicator.

  1. Check the status of the MIL while performing the Active Test.


Result:

Result
Proceed to
Changes
A
Does not change
B


B
REPLACE COMBINATION METER ASSEMBLY (LandCruiser RM000003QKY01CX.html)
A

REPLACE ECM (LandCruiser RM000000VW203EX.html)