Sfi System Mil Circuit

Engine. Camry. Acv40 Gsv40
2Gr-Fe Engine Control System. Camry. Acv40 Gsv40

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

INSPECT COMBINATION METER ASSEMBLY (MIL CIRCUIT)

SFI SYSTEM - MIL Circuit


DESCRIPTION

The MIL (Malfunction Indicator Lamp) is used to indicate vehicle malfunctions detected by the ECM. When the engine switch 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. If the MIL remains illuminated or is not illuminated, conduct the following troubleshooting procedure using the intelligent tester.

WIRING DIAGRAM


Camry. Acv40 Gsv40.2Gr-Fe Engine Control System.Sfi System.Sfi System Mil Circuit


INSPECTION PROCEDURE

1.CHECK THAT MIL IS ILLUMINATED

  1. Perform troubleshooting in accordance with the table below.

    Result:
    Condition
    		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. Select the following menu items: Powertrain / Engine / DTC.

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

  1. Clear the DTCs (CAMRY_ACV40 RM000000PDK0MSX.html).

  1. Check if the MIL goes off.

    Standard:
    MIL goes off.


OK
REPAIR CIRCUITS INDICATED BY OUTPUT DTCS
NG


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


    Camry. Acv40 Gsv40.2Gr-Fe Engine Control System.Sfi System.Sfi System Mil Circuit

  1. Disconnect the A24 (RHD) or A55 (LHD) ECM connector.

  1. Turn the engine switch on (IG).

  1. Check that the MIL is not illuminated.

    OK:
    MIL is not illuminated.

  1. Reconnect the ECM connector.



OK
REPLACE ECM (CAMRY_ACV40 RM0000022NT01EX.html)
NG


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


    Camry. Acv40 Gsv40.2Gr-Fe Engine Control System.Sfi System.Sfi System Mil Circuit

  1. Disconnect the A24 (RHD) or A55 (LHD) ECM connector.

  1. Disconnect the F2 combination meter connector.

  1. Measure the resistance.

    Standard resistance (Check for short):
    RHD:
    Tester Connection
    		Specified Condition
    W (A24-24) or CHK (F2-4) - Body ground
    		10 kΩ or higher
    LHD:
    Tester Connection
    		Specified Condition
    W (A55-24) or CHK (F2-4) - Body ground
    		10 kΩ or higher

  1. Reconnect the ECM connector.

  1. Reconnect the combination meter connector.



OK
REPAIR OR REPLACE COMBINATION METER ASSEMBLY
NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

5.CHECK THAT MIL IS ILLUMINATED

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

    OK:
    MIL is illuminated.


OK
SYSTEM OK
NG


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 (CAMRY_ACV40 RM000001MTC05XX.html)
A


7.INSPECT COMBINATION METER ASSEMBLY (MIL CIRCUIT)

  1. Check the MIL circuit (CAMRY_ACV40 RM0000012GB05VX.html).



NG
REPAIR OR REPLACE COMBINATION METER ASSEMBLY
OK

CHECK AND REPLACE HARNESS AND CONNECTOR (COMBINATION METER - ECM)