Sfi System Vc Output Circuit

Engine Hybrid System. Land Cruiser. Urj200, 202 Grj200 Vdj200
1Gr-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 BODY WITH MOTOR ASSEMBLY)

CHECK MIL (ACCELERATOR PEDAL SENSOR ASSEMBLY)

CHECK MIL (NO. 1 EMISSION CONTROL VALVE SET)

CHECK MIL (NO. 2 EMISSION CONTROL VALVE SET)

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

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

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

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

CHECK MIL (POWER STEERING OIL 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 Vdj200.1Gr-Fe Engine Control.Sfi System.Sfi System Vc Output Circuit

When the VC circuit is short-circuited, the microprocessor in the ECM and the 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 ignition switch is first turned to ON. The MIL goes off when the engine is started.

WIRING DIAGRAM


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


Land Cruiser. Urj200, 202 Grj200 Vdj200.1Gr-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 turning the ignition switch to ON.

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


A
SYSTEM OK
B


2.CHECK COMMUNICATION BETWEEN GTS AND ECM

  1. Connect the GTS to the DLC3.

  1. Turn the ignition switch to ON and 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 BODY WITH MOTOR ASSEMBLY)

  1. Disconnect the throttle body with motor assembly connector.

  1. Turn the ignition switch to ON.

  1. Check the MIL.

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


A
REPLACE THROTTLE BODY WITH MOTOR ASSEMBLY (Click here)
B


4.CHECK MIL (ACCELERATOR PEDAL SENSOR ASSEMBLY)

  1. Disconnect the accelerator pedal sensor assembly connector.

  1. Turn the ignition switch to ON.

  1. Check the MIL.

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


A
REPLACE ACCELERATOR PEDAL SENSOR ASSEMBLY (Click here)
B


5.CHECK MIL (NO. 1 EMISSION CONTROL VALVE SET)

  1. Disconnect the No. 1 emission control valve set connector.

  1. Turn the ignition switch to ON.

  1. Check the MIL.

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


A
REPLACE NO. 1 EMISSION CONTROL VALVE SET (Click here)
B


6.CHECK MIL (NO. 2 EMISSION CONTROL VALVE SET)

  1. Disconnect the No. 2 emission control valve set connector.

  1. Turn the ignition switch to ON.

  1. Check the MIL.

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


A
REPLACE NO. 2 EMISSION CONTROL VALVE SET (Click here)
B


7.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 ignition switch to ON.

  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


8.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 ignition switch to ON.

  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


9.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 ignition switch to ON.

  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


10.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 ignition switch to ON.

  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


11.CHECK MIL (POWER STEERING OIL PRESSURE SENSOR)

  1. Disconnect the power steering oil pressure sensor connector.

  1. Turn the ignition switch to ON.

  1. Check the MIL.

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


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


12.CHECK HARNESS AND CONNECTOR

  1. Disconnect the throttle body with motor assembly connector.

  1. Disconnect the accelerator pedal sensor assembly connector.

  1. Disconnect the No. 1 emission control valve set connector.

  1. Disconnect the No. 2 emission control valve set connector.

  1. Disconnect the VVT sensor (for intake 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 1) connector.

  1. Disconnect the VVT sensor (for exhaust side of bank 2) connector.

  1. Disconnect the power steering oil pressure sensor connector.

  1. Disconnect the ECM connectors.

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

    Standard Resistance:
    for LHD
    Tester Connection
    		Condition
    		Specified Condition
    A38-57 (VCPA) - Body ground
    		Always
    		10 kΩ or higher
    A38-59 (VCP2) - Body ground
    		Always
    		10 kΩ or higher
    C45-80 (VCTA) - Body ground
    		Always
    		10 kΩ or higher
    C45-67 (VCV1) - Body ground
    		Always
    		10 kΩ or higher
    C45-66 (VCV2) - Body ground
    		Always
    		10 kΩ or higher
    for RHD
    Tester Connection
    		Condition
    		Specified Condition
    A52-57 (VCPA) - Body ground
    		Always
    		10 kΩ or higher
    A52-59 (VCP2) - Body ground
    		Always
    		10 kΩ or higher
    C46-80 (VCTA) - Body ground
    		Always
    		10 kΩ or higher
    C46-67 (VCV1) - Body ground
    		Always
    		10 kΩ or higher
    C46-66 (VCV2) - Body ground
    		Always
    		10 kΩ or higher


NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK

REPLACE ECM (Click here)