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

READ VALUE USING GTS

CHECK TERMINAL VOLTAGE (POWER SOURCE OF ECM)

CHECK CONNECTION BETWEEN GTS AND ECM (THROTTLE POSITION SENSOR)

CHECK CONNECTION BETWEEN GTS AND ECM (ACCELERATOR PEDAL POSITION SENSOR)

CHECK CONNECTION BETWEEN GTS AND ECM (MANIFOLD ABSOLUTE PRESSURE SENSOR)

CHECK CONNECTION BETWEEN GTS AND ECM (AIR SWITCHING VALVE for Bank 1)

CHECK CONNECTION BETWEEN GTS AND ECM (AIR SWITCHING VALVE for Bank 2)

CHECK CONNECTION BETWEEN GTS AND ECM (POWER STEERING OIL PRESSURE SENSOR)

CHECK CONNECTION BETWEEN GTS AND ECM (CAMSHAFT POSITION SENSOR)

CHECK CONNECTION BETWEEN GTS AND ECM (CRANKSHAFT POSITION SENSOR)

CHECK CONNECTION BETWEEN GTS AND ECM (VVT SENSOR for Intake Side of Bank 1)

CHECK CONNECTION BETWEEN GTS AND ECM (VVT SENSOR for Exhaust Side of Bank 1)

CHECK CONNECTION BETWEEN GTS AND ECM (VVT SENSOR for Intake Side of Bank 2)

CHECK CONNECTION BETWEEN GTS AND ECM (VVT SENSOR for Exhaust Side of Bank 2)

CHECK HARNESS AND CONNECTOR

SFI SYSTEM - VC Output Circuit


DESCRIPTION

The ECM constantly generates 5 V power from the battery voltages supplied to the +B (BATT) terminal to operate the microprocessor. The ECM also provides this power 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.

WIRING DIAGRAM

  1. Refer to ECM Power Source Circuit (Click here).
  2. VC Output Circuit

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

NOTICE:
Inspect the fuses for circuits related to this system before performing the following inspection procedure.
1.READ VALUE USING GTS

  1. Connect the GTS to the DLC3.

  1. Turn the engine switch on (IG) and GTS on.

  1. Check the communication between the GTS and ECM.

    HINT:
    It can be checked using the "Engine" item of the Data List.
    Result
    Result
    		Proceed to
    Communication is not possible
    		A
    Communication is possible
    		B


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


2.CHECK TERMINAL VOLTAGE (POWER SOURCE OF ECM)


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

  1. Turn the engine switch on (IG).

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

    Standard Voltage:
    Tester Connection
    		Condition
    		Specified Condition
    1 (EFI No. 2 fuse) - Body ground
    		Engine switch on (IG)
    		11 to 14 V
    Text Illustration
    *1
    		Engine Room Relay Block
    *2
    		EFI No. 2 Fuse
    HINT:
    If the result is not as specified, since current is not flowing to the +B and +B2 terminals of the ECM, the system may not be started.


NG
GO TO ECM POWER SOURCE CIRCUIT (Click here)
OK


3.CHECK CONNECTION BETWEEN GTS AND ECM (THROTTLE POSITION SENSOR)

  1. Disconnect the throttle body connector.

  1. Turn the engine switch on (IG).

  1. Turn the GTS on.

  1. Check the communication between the GTS and ECM.

    HINT:
    It can be checked using the "Engine and ECT" item of the Data List.
    Result
    Result
    		Proceed to
    Communication is not possible
    		A
    Communication is possible
    		B


B
REPLACE THROTTLE BODY ASSEMBLY (Click here)
A


4.CHECK CONNECTION BETWEEN GTS AND ECM (ACCELERATOR PEDAL POSITION SENSOR)

  1. Disconnect the accelerator pedal position sensor connector.

  1. Turn the engine switch on (IG).

  1. Turn the GTS on.

  1. Check the communication between the GTS and ECM.

    HINT:
    It can be checked using the "Engine and ECT" item of the Data List.
    Result
    Result
    		Proceed to
    Communication is not possible
    		A
    Communication is possible
    		B


B
REPLACE ACCELERATOR PEDAL POSITION SENSOR (Click here)
A


5.CHECK CONNECTION BETWEEN GTS AND ECM (MANIFOLD ABSOLUTE PRESSURE SENSOR)

  1. Disconnect the manifold absolute pressure sensor connector.

  1. Turn the engine switch on (IG).

  1. Turn the GTS on.

  1. Check the communication between the GTS and ECM.

    HINT:
    It can be checked using the "Engine and ECT" item of the Data List.
    Result
    Result
    		Proceed to
    Communication is not possible
    		A
    Communication is possible
    		B


B
REPLACE MANIFOLD ABSOLUTE PRESSURE SENSOR (Click here)
A


6.CHECK CONNECTION BETWEEN GTS AND ECM (AIR SWITCHING VALVE for Bank 1)

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

  1. Turn the engine switch on (IG).

  1. Turn the GTS on.

  1. Check the communication between the GTS and ECM.

    HINT:
    It can be checked using the "Engine and ECT" item of the Data List.
    Result
    Result
    		Proceed to
    Communication is not possible
    		A
    Communication is possible
    		B


B
REPLACE AIR SWITCHING VALVE (Click here)
A


7.CHECK CONNECTION BETWEEN GTS AND ECM (AIR SWITCHING VALVE for Bank 2)

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

  1. Turn the engine switch on (IG).

  1. Turn the GTS on.

  1. Check the communication between the GTS and ECM.

    HINT:
    It can be checked using the "Engine and ECT" item of the Data List.
    Result
    Result
    		Proceed to
    Communication is not possible
    		A
    Communication is possible
    		B


B
REPLACE AIR SWITCHING VALVE (Click here)
A


8.CHECK CONNECTION BETWEEN GTS AND ECM (POWER STEERING OIL PRESSURE SENSOR)

  1. Disconnect the power steering oil pressure sensor connector.

  1. Turn the engine switch on (IG).

  1. Turn the GTS on.

  1. Check the communication between the GTS and ECM.

    HINT:
    It can be checked using the "Engine and ECT" item of the Data List.
    Result
    Result
    		Proceed to
    Communication is not possible
    		A
    Communication is possible
    		B


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


9.CHECK CONNECTION BETWEEN GTS AND ECM (CAMSHAFT POSITION SENSOR)

  1. Disconnect the camshaft position sensor connector.

  1. Turn the engine switch on (IG).

  1. Turn the GTS on.

  1. Check the communication between the GTS and ECM.

    HINT:
    It can be checked using the "Engine and ECT" item of the Data List.
    Result
    Result
    		Proceed to
    Communication is not possible
    		A
    Communication is possible
    		B


B
REPLACE CAMSHAFT POSITION SENSOR (Click here)
A


10.CHECK CONNECTION BETWEEN GTS AND ECM (CRANKSHAFT POSITION SENSOR)

  1. Disconnect the crankshaft position sensor connector.

  1. Turn the engine switch on (IG).

  1. Turn the GTS on.

  1. Check the communication between the GTS and ECM.

    HINT:
    It can be checked using the "Engine and ECT" item of the Data List.
    Result
    Result
    		Proceed to
    Communication is not possible
    		A
    Communication is possible
    		B


B
REPLACE CRANKSHAFT POSITION SENSOR (Click here)
A


11.CHECK CONNECTION BETWEEN GTS AND ECM (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. Turn the GTS on.

  1. Check the communication between the GTS and ECM.

    HINT:
    It can be checked using the "Engine and ECT" item of the Data List.
    Result
    Result
    		Proceed to
    Communication is not possible
    		A
    Communication is possible
    		B


B
REPLACE VVT SENSOR (for Intake Side of Bank 1) (Click here)
A


12.CHECK CONNECTION BETWEEN GTS AND ECM (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. Turn the GTS on.

  1. Check the communication between the GTS and ECM.

    HINT:
    It can be checked using the "Engine and ECT" item of the Data List.
    Result
    Result
    		Proceed to
    Communication is not possible
    		A
    Communication is possible
    		B


B
REPLACE VVT SENSOR (for Exhaust Side of Bank 1) (Click here)
A


13.CHECK CONNECTION BETWEEN GTS AND ECM (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. Turn the GTS on.

  1. Check the communication between the GTS and ECM.

    HINT:
    It can be checked using the "Engine and ECT" item of the Data List.
    Result
    Result
    		Proceed to
    Communication is not possible
    		A
    Communication is possible
    		B


B
REPLACE VVT SENSOR (for Intake Side of Bank 2) (Click here)
A


14.CHECK CONNECTION BETWEEN GTS AND ECM (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. Turn the GTS on.

  1. Check the communication between the GTS and ECM.

    HINT:
    It can be checked using the "Engine and ECT" item of the Data List.
    Result
    Result
    		Proceed to
    Communication is not possible
    		A
    Communication is possible
    		B


B
REPLACE VVT SENSOR (for Exhaust Side of Bank 2) (Click here)
A


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
    1S-11 - A52-3 (+B)
    		Always
    		Below 1 Ω
    1S-11 - A52-2 (+B2)
    		Always
    		Below 1 Ω
    1S-11 or A52-3 (+B) - Body ground
    		Always
    		10 kΩ or higher
    1S-11 or A52-2 (+B2) - 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
    1S-11 - A38-3 (+B)
    		Always
    		Below 1 Ω
    1S-11 - A38-2 (+B2)
    		Always
    		Below 1 Ω
    1S-11 or A38-3 (+B) - Body ground
    		Always
    		10 kΩ or higher
    1S-11 or A38-2 (+B2) - Body ground
    		Always
    		10 kΩ or higher


NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK

REPLACE ECM (Click here)