Sfi System Mil Circuit

Engine Hybrid System. Hilux. Tgn26, 36 Kun25, 26, 35, 36 Ggn25
1Gr-Fe Engine Control. Hilux. Tgn26, 36 Kun25, 26, 35, 36 Ggn25

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 (ECM - COMBINATION METER ASSEMBLY)

CHECK THAT MIL IS ILLUMINATED

CHECK THAT ENGINE STARTS

CHECK HARNESS AND CONNECTOR (ECM - COMBINATION METER ASSEMBLY)

SFI SYSTEM - MIL Circuit


DESCRIPTION

The MIL (Malfunction Indicator Lamp) is used to indicate vehicle malfunction detections by the ECM.
By turning the ignition switch 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 first turned to ON, 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


Hilux. Tgn26, 36 Kun25, 26, 35, 36 Ggn25.1Gr-Fe Engine Control.Sfi System.Sfi System Mil Circuit


INSPECTION PROCEDURE

NOTICE:
Inspect the fuses for circuits related to this system before performing the following inspection procedure.
1.CHECK THAT MIL IS ILLUMINATED

  1. Perform troubleshooting in accordance with the chart 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 ignition switch to ON.

  1. Turn the tester on.

  1. Check whether any DTCs have been stored. Note them down if necessary.

  1. Clear DTCs (HILUX_TGN26 RM000000PDK12JX.html).

  1. Check if the MIL turns off.

    OK:
    MIL turns off.


NG
Go to step 3
OK

REPAIR CIRCUIT INDICATED BY OUTPUT DTC (HILUX_TGN26 RM000002ZSO00TX.html)

3.CHECK HARNESS AND CONNECTOR (CHECK FOR SHORT IN WIRE HARNESS)
Hilux. Tgn26, 36 Kun25, 26, 35, 36 Ggn25.1Gr-Fe Engine Control.Sfi System.Sfi System Mil Circuit

  1. Disconnect the ECM connector.

  1. Turn the ignition switch to ON.

  1. Check that the MIL is not illuminated.

    OK:
    MIL is not illuminated.
    Text in Illustration
    *a
    		Rear view of wire harness connector
    (to ECM)


NG
Go to step 4
OK

REPLACE ECM (HILUX_TGN26 RM000000VW202SX.html)

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

  1. Disconnect the ECM connector.

  1. Disconnect the combination meter assembly connector.

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

    Standard Resistance:

    Tester Connection
    		Condition
    		Specified Condition
    G154-30 (W) - G19-39 (CHK)
    		Always
    		Below 1 Ω


NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK

REPLACE COMBINATION METER ASSEMBLY (HILUX_TGN26 RM000000THS02OX.html)

5.CHECK THAT MIL IS ILLUMINATED

  1. Check if the MIL is illuminated when the ignition switch is turns ON.

    OK:
    MIL is illuminated.


NG
Go to step 6
OK

END

6.CHECK THAT ENGINE STARTS

  1. Turn the ignition switch to ON.

  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 (HILUX_TGN26 RM000001D6V0OLX.html)
A


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

  1. Disconnect the ECM connector.

  1. Disconnect the combination meter assembly connector.

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

    Standard Resistance:

    Tester Connection
    		Condition
    		Specified Condition
    G154-30 (W) - G19-39 (CHK)
    		Always
    		Below 1 Ω


NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK

REPLACE COMBINATION METER ASSEMBLY (HILUX_TGN26 RM000000THS02OX.html)