Sfi System Vc Output Circuit

Engine Hybrid System. Land Cruiser. Urj200, 202 Grj200 Vdj200
1Ur-Fe Engine Control. Land Cruiser. Urj200, 202 Grj200 Vdj200

DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

CHECK MIL

CHECK COMMUNICATION BETWEEN GTS AND ECM

CHECK MIL (THROTTLE POSITION SENSOR)

CHECK MIL (ACCELERATOR PEDAL POSITION SENSOR)

CHECK MIL (AIR SWITCHING VALVE ASSEMBLY FOR BANK 1)

CHECK MIL (AIR SWITCHING VALVE ASSEMBLY FOR BANK 2)

CHECK MIL (POWER STEERING OIL PRESSURE SWITCH)

CHECK MIL (CAMSHAFT POSITION SENSOR)

CHECK MIL (CRANKSHAFT POSITION SENSOR)

CHECK MIL (VVT SENSOR FOR INTAKE SIDE OF BANK 1)

CHECK MIL (VVT SENSOR FOR EXHAUST SIDE OF BANK 1)

CHECK MIL (VVT SENSOR FOR INTAKE SIDE OF BANK 2)

CHECK MIL (VVT SENSOR FOR EXHAUST SIDE OF BANK 2)

CHECK MIL (MANIFOLD ABSOLUTE PRESSURE SENSOR)

CHECK HARNESS AND CONNECTOR

SFI SYSTEM - VC Output Circuit


DESCRIPTION

The ECM constantly generates a 5 V power source voltage from the battery voltage supplied to the +B (BATT) terminal to operate the microprocessor. The ECM also provides this power source voltage to the sensors through the VC output circuit.

Land Cruiser. Urj200, 202 Grj200 Vdj200.1Ur-Fe Engine Control.Sfi System.Sfi System Vc Output Circuit

When the VC circuit is short-circuited, the microprocessor in the ECM and sensors that are supplied with power through the VC circuit are inactivated because the power is not supplied from the VC circuit. Under this condition, the system does not start up and the MIL does not illuminate even if the system malfunctions.
HINT:
Under normal conditions, the MIL is illuminated for several seconds when the engine switch is first turned on (IG). The MIL goes off when the engine is started.

WIRING DIAGRAM


Land Cruiser. Urj200, 202 Grj200 Vdj200.1Ur-Fe Engine Control.Sfi System.Sfi System Vc Output Circuit


Land Cruiser. Urj200, 202 Grj200 Vdj200.1Ur-Fe Engine Control.Sfi System.Sfi System Vc Output Circuit


INSPECTION PROCEDURE

1.CHECK MIL

  1. Check that the Malfunction Indicator Lamp (MIL) lights up when the engine switch is turned on (IG).

    OK:
    MIL lights up.


NG
Go to step 2
OK

PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE (Click here)

2.CHECK COMMUNICATION BETWEEN GTS AND ECM

  1. Connect the GTS to the DLC3.

  1. Turn the engine switch on (IG).

  1. Turn the GTS on.

  1. Check the communication between the GTS and ECM.

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


A
GO TO MIL CIRCUIT (Click here)
B


3.CHECK MIL (THROTTLE POSITION SENSOR)

  1. Disconnect the throttle body connector.

  1. Turn the engine switch on (IG).

  1. Check the MIL.

    Result
    Result
    		Proceed to
    MIL illuminates
    		A
    MIL does not illuminate
    		B


A
REPLACE THROTTLE BODY ASSEMBLY (Click here)
B


4.CHECK MIL (ACCELERATOR PEDAL POSITION SENSOR)

  1. Disconnect the accelerator pedal position sensor connector.

  1. Turn the engine switch on (IG).

  1. Check the MIL.

    Result
    Result
    		Proceed to
    MIL illuminates
    		A
    MIL does not illuminate
    		B


A
REPLACE ACCELERATOR PEDAL POSITION SENSOR ASSEMBLY (Click here)
B


5.CHECK MIL (AIR SWITCHING VALVE ASSEMBLY FOR BANK 1)

  1. Disconnect the air switching valve connector.

  1. Turn the engine switch on (IG).

  1. Check the MIL.

    Result
    Result
    		Proceed to
    MIL illuminates
    		A
    MIL does not illuminate
    		B


A
REPLACE AIR SWITCHING VALVE ASSEMBLY (Click here)
B


6.CHECK MIL (AIR SWITCHING VALVE ASSEMBLY FOR BANK 2)

  1. Disconnect the air switching valve connector.

  1. Turn the engine switch on (IG).

  1. Check the MIL.

    Result
    Result
    		Proceed to
    MIL illuminates
    		A
    MIL does not illuminate
    		B


A
REPLACE AIR SWITCHING VALVE ASSEMBLY (Click here)
B


7.CHECK MIL (POWER STEERING OIL PRESSURE SWITCH)

  1. Disconnect the power steering oil pressure switch connector.

  1. Turn the engine switch on (IG).

  1. Check the MIL.

    Result
    Result
    		Proceed to
    MIL illuminates
    		A
    MIL does not illuminate
    		B


A
REPLACE POWER STEERING OIL PRESSURE SWITCH (Click here)
B


8.CHECK MIL (CAMSHAFT POSITION SENSOR)

  1. Disconnect the camshaft position sensor connector.

  1. Turn the engine switch on (IG).

  1. Check the MIL.

    Result
    Result
    		Proceed to
    MIL illuminates
    		A
    MIL does not illuminate
    		B


A
REPLACE CAMSHAFT POSITION SENSOR (Click here)
B


9.CHECK MIL (CRANKSHAFT POSITION SENSOR)

  1. Disconnect the crankshaft position sensor connector.

  1. Turn the engine switch on (IG).

  1. Check the MIL.

    Result
    Result
    		Proceed to
    MIL illuminates
    		A
    MIL does not illuminate
    		B


A
REPLACE CRANKSHAFT POSITION SENSOR (Click here)
B


10.CHECK MIL (VVT SENSOR FOR INTAKE SIDE OF BANK 1)

  1. Disconnect the VVT sensor (for Intake Side of Bank 1) connector.

  1. Turn the engine switch on (IG).

  1. Check the MIL.

    Result
    Result
    		Proceed to
    MIL illuminates
    		A
    MIL does not illuminate
    		B


A
REPLACE VVT SENSOR (FOR INTAKE SIDE OF BANK 1) (Click here)
B


11.CHECK MIL (VVT SENSOR FOR EXHAUST SIDE OF BANK 1)

  1. Disconnect the VVT sensor (for Exhaust Side of Bank 1) connector.

  1. Turn the engine switch on (IG).

  1. Check the MIL.

    Result
    Result
    		Proceed to
    MIL illuminates
    		A
    MIL does not illuminate
    		B


A
REPLACE VVT SENSOR (FOR EXHAUST SIDE OF BANK 1) (Click here)
B


12.CHECK MIL (VVT SENSOR FOR INTAKE SIDE OF BANK 2)

  1. Disconnect the VVT sensor (for Intake Side of Bank 2) connector.

  1. Turn the engine switch on (IG).

  1. Check the MIL.

    Result
    Result
    		Proceed to
    MIL illuminates
    		A
    MIL does not illuminate
    		B


A
REPLACE VVT SENSOR (FOR INTAKE SIDE OF BANK 2) (Click here)
B


13.CHECK MIL (VVT SENSOR FOR EXHAUST SIDE OF BANK 2)

  1. Disconnect the VVT sensor (for Exhaust Side of Bank 2) connector.

  1. Turn the engine switch on (IG).

  1. Check the MIL.

    Result
    Result
    		Proceed to
    MIL illuminates
    		A
    MIL does not illuminate
    		B


A
REPLACE VVT SENSOR (FOR EXHAUST SIDE OF BANK 2) (Click here)
B


14.CHECK MIL (MANIFOLD ABSOLUTE PRESSURE SENSOR)

  1. Disconnect the manifold absolute pressure sensor connector.

  1. Turn the engine switch on (IG).

  1. Check the MIL.

    Result
    Result
    		Proceed to
    MIL illuminates
    		A
    MIL does not illuminate
    		B


A
REPLACE MANIFOLD ABSOLUTE PRESSURE SENSOR (Click here)
B


15.CHECK HARNESS AND CONNECTOR

  1. Disconnect the throttle body connector.

  1. Disconnect the accelerator pedal position sensor connector.

  1. Disconnect the air switching valve connector (for Bank 1).

  1. Disconnect the air switching valve connector (for Bank 2).

  1. Disconnect the power steering oil pressure switch connector.

  1. Disconnect the camshaft position sensor connector.

  1. Disconnect the crankshaft position sensor connector.

  1. Disconnect the VVT sensor (for Intake Side of Bank 1) connector.

  1. Disconnect the VVT sensor (for Exhaust Side of Bank 1) connector.

  1. Disconnect the VVT sensor (for Intake Side of Bank 2) connector.

  1. Disconnect the VVT sensor (for Exhaust Side of Bank 2) connector.

  1. Disconnect the manifold absolute pressure sensor connector.

  1. Disconnect the ECM connectors.

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

    Standard Resistance:

    for RHD
    Tester Connection
    		Condition
    		Specified Condition
    C46-80 (VCTA) - Body ground
    		Always
    		10 kΩ or higher
    A52-57 (VCPA) - Body ground
    		Always
    		10 kΩ or higher
    A52-59 (VCP2) - Body ground
    		Always
    		10 kΩ or higher
    C46-66 (VCV2) - Body ground
    		Always
    		10 kΩ or higher
    C46-67 (VCV1) - Body ground
    		Always
    		10 kΩ or higher

    for LHD
    Tester Connection
    		Condition
    		Specified Condition
    C45-80 (VCTA) - Body ground
    		Always
    		10 kΩ or higher
    A38-57 (VCPA) - Body ground
    		Always
    		10 kΩ or higher
    A38-59 (VCP2) - Body ground
    		Always
    		10 kΩ or higher
    C45-66 (VCV2) - Body ground
    		Always
    		10 kΩ or higher
    C45-67 (VCV1) - Body ground
    		Always
    		10 kΩ or higher


NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK

REPLACE ECM (Click here)