Sfi System Mil Circuit

Engine Hybrid System. Land Cruiser. Urj200, 202 Grj200 Vdj200
3Ur-Fe Engine Control. Land Cruiser. Urj200, 202 Grj200 Vdj200

DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

CHECK THAT MIL IS ILLUMINATED

CHECK WHETHER MIL TURNS OFF

CHECK HARNESS AND CONNECTOR (CHECK FOR SHORT IN WIRE HARNESS)

CHECK HARNESS AND CONNECTOR (COMBINATION METER - ECM)

CHECK THAT MIL IS ILLUMINATED

CHECK THAT ENGINE STARTS

CHECK HARNESS AND CONNECTOR (COMBINATION METER - ECM)

SFI SYSTEM - MIL Circuit


DESCRIPTION

The MIL (Malfunction Indicator Lamp) is used to indicate vehicle malfunction detections by the ECM. When the engine switch is turned on (IG), 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 engine switch is first turned on (IG), the MIL should be illuminated and should then turn off when the engine is started. If the MIL remains illuminated or is not illuminated, conduct the following troubleshooting procedure using the intelligent tester.

WIRING DIAGRAM


Land Cruiser. Urj200, 202 Grj200 Vdj200.3Ur-Fe Engine Control.Sfi System.Sfi System Mil Circuit


INSPECTION PROCEDURE

1.CHECK THAT MIL IS ILLUMINATED

  1. Perform troubleshooting in accordance with the table below.

    Result
    Result
    		Proceed to
    MIL remains ON
    		A
    MIL does not illuminate
    		B


B
Go to step 5
A


2.CHECK WHETHER MIL TURNS OFF

  1. Connect the intelligent tester to the DLC3.

  1. Turn the engine switch on (IG) and turn the tester on.

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

  1. Check if any DTCs are output. Note down any DTCs.

  1. Clear DTCs (Click here).

  1. Check if the MIL goes off.

    Standard:
    MIL goes off


NG
Go to step 3
OK

REPAIR CIRCUITS INDICATED BY OUTPUT DTCS (Click here)

3.CHECK HARNESS AND CONNECTOR (CHECK FOR SHORT IN WIRE HARNESS)
Land Cruiser. Urj200, 202 Grj200 Vdj200.3Ur-Fe Engine Control.Sfi System.Sfi System Mil Circuit

  1. Disconnect the A38 ECM connector.

  1. Turn the engine switch on (IG).

  1. Check that the MIL is not illuminated.

    OK:
    MIL is not illuminated.


NG
Go to step 4
OK

REPLACE ECM (Click here)

4.CHECK HARNESS AND CONNECTOR (COMBINATION METER - ECM)

  1. Disconnect the A38 ECM connector.

  1. Disconnect the E8 combination meter connector.

  1. Measure the resistance according to the value(s) in the table below.

    Standard Resistance:

    Tester Connection
    		Condition
    		Specified Condition
    A38-24 (W) or E8-12 (CHK) - Body ground
    		Always
    		10 kΩ or higher


NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK

REPLACE COMBINATION METER ASSEMBLY (Click here)

5.CHECK THAT MIL IS ILLUMINATED

  1. Check if the MIL is illuminated when the engine switch is turned on (IG).

    OK:
    MIL is illuminated.


NG
Go to step 6
OK

SYSTEM OK

6.CHECK THAT ENGINE STARTS

  1. Turn the engine switch on (IG).

  1. Start the engine.

    Result
    Result
    		Proceed to
    Engine starts
    		A
    Engine does not start*
    		B
    HINT:
    *: The intelligent tester cannot communicate with the ECM.


B
GO TO VC OUTPUT CIRCUIT (Click here)
A


7.CHECK HARNESS AND CONNECTOR (COMBINATION METER - ECM)

  1. Disconnect the A38 ECM connector.

  1. Disconnect the E8 combination meter connector.

  1. Measure the resistance according to the value(s) in the table below.

    Standard Resistance:

    Tester Connection
    		Condition
    		Specified Condition
    A38-24 (W) - E8-12 (CHK)
    		Always
    		Below 1 Ω


NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK

REPLACE COMBINATION METER ASSEMBLY (Click here)