Ecd System (W/O Dpf) Vc Output Circuit

Engine Hybrid System. Land Cruiser. Urj200, 202 Grj200 Vdj200
1Vd-Ftv Engine Control. Land Cruiser. Urj200, 202 Grj200 Vdj200

DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

CHECK MIL

CHECK COMMUNICATION BETWEEN INTELLIGENT TESTER AND ECM

CHECK MIL (THROTTLE POSITION SENSOR (for Bank 1))

CHECK MIL (THROTTLE POSITION SENSOR (for Bank 2))

CHECK MIL (NO. 1 EGR VALVE POSITION SENSOR)

CHECK MIL (NO. 2 EGR VALVE POSITION SENSOR)

CHECK MIL (ACCELERATOR PEDAL POSITION SENSOR)

CHECK MIL (MANIFOLD ABSOLUTE PRESSURE SENSOR)

CHECK MIL (FUEL PRESSURE SENSOR)

CHECK HARNESS AND CONNECTOR

ECD SYSTEM (w/o DPF) - VC Output Circuit


DESCRIPTION

The ECM constantly generates 5 V of power from the battery voltage 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 Vdj200.1Vd-Ftv Engine Control.Ecd System (W/ Dpf).Ecd System (W/O Dpf) 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 ignition switch is first turned to ON. The MIL goes off when the engine is started.

WIRING DIAGRAM


Land Cruiser. Urj200, 202 Grj200 Vdj200.1Vd-Ftv Engine Control.Ecd System (W/ Dpf).Ecd System (W/O Dpf) Vc Output Circuit


Land Cruiser. Urj200, 202 Grj200 Vdj200.1Vd-Ftv Engine Control.Ecd System (W/ Dpf).Ecd System (W/O Dpf) Vc Output Circuit


INSPECTION PROCEDURE

NOTICE:
After replacing the ECM, the new ECM needs registration (Click here) and initialization (Click here).
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
END
B


2.CHECK COMMUNICATION BETWEEN INTELLIGENT TESTER AND ECM

  1. Connect the intelligent tester to the DLC3.

  1. Turn the ignition switch to ON and tester on.

  1. Check the communication between the tester 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 (for Bank 1))

  1. Disconnect the C83 throttle position sensor (for 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

  1. Reconnect the C83 throttle position sensor (for Bank 1) connector.



A
REPLACE DIESEL THROTTLE BODY ASSEMBLY (for Bank 1) (Click here)
B


4.CHECK MIL (THROTTLE POSITION SENSOR (for Bank 2))

  1. Disconnect the C84 throttle position sensor (for 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

  1. Reconnect the C84 throttle position sensor (for Bank 2) connector.



A
REPLACE DIESEL THROTTLE BODY ASSEMBLY (for Bank 2) (Click here)
B


5.CHECK MIL (NO. 1 EGR VALVE POSITION SENSOR)
HINT:
For vehicles without EGR valve, perform troubleshooting from the next step.

  1. Disconnect the C87 No. 1 EGR valve connector.

  1. Turn the ignition switch to ON.

  1. Check the MIL.

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

  1. Reconnect the C87 No. 1 EGR valve connector.



A
REPLACE NO. 1 EGR VALVE ASSEMBLY (Click here)
B


6.CHECK MIL (NO. 2 EGR VALVE POSITION SENSOR)
HINT:
For vehicles without EGR valve, perform troubleshooting from the next step.

  1. Disconnect the C88 No. 2 EGR valve connector.

  1. Turn the ignition switch to ON.

  1. Check the MIL.

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

  1. Reconnect the C88 No. 2 EGR valve connector.



A
REPLACE NO. 2 EGR VALVE ASSEMBLY (Click here)
B


7.CHECK MIL (ACCELERATOR PEDAL POSITION SENSOR)

  1. Disconnect the A31 accelerator pedal position 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

  1. Reconnect the A31 accelerator pedal position sensor connector.



A
REPLACE ACCELERATOR PEDAL ROD ASSEMBLY (Click here)
B


8.CHECK MIL (MANIFOLD ABSOLUTE PRESSURE SENSOR)

  1. Disconnect the C80 manifold absolute 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

  1. Reconnect the C80 manifold absolute pressure sensor connector.



A
REPLACE MANIFOLD ABSOLUTE PRESSURE SENSOR (Click here)
B


9.CHECK MIL (FUEL PRESSURE SENSOR)

  1. Disconnect the C82 fuel 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

  1. Reconnect the C82 fuel pressure sensor connector.



A
REPLACE COMMON RAIL (for Bank 1) (Click here)
B


10.CHECK HARNESS AND CONNECTOR

  1. Disconnect the throttle position sensor (for Bank 1) connector.

  1. Disconnect the throttle position sensor (for Bank 2) connector.

  1. Disconnect the No. 1 EGR valve connector.

  1. Disconnect the No. 2 EGR valve connector.

  1. Disconnect the accelerator pedal position sensor connector.

  1. Disconnect the manifold absolute pressure sensor connector.

  1. Disconnect the fuel pressure sensor connector.



    Land Cruiser. Urj200, 202 Grj200 Vdj200.1Vd-Ftv Engine Control.Ecd System (W/ Dpf).Ecd System (W/O Dpf) Vc Output Circuit

  1. Disconnect the ECM connectors.

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

    Standard Resistance (Check for Short):
    for LHD
    Tester Connection
    		Condition
    		Specified Condition
    C45-90 (VCEG) - Body ground
    		Always
    		10 kΩ or higher
    C45-91 (VCVL) - Body ground
    		Always
    		10 kΩ or higher
    C45-70 (VCM) - Body ground
    		Always
    		10 kΩ or higher
    C45-66 (VCPM) - Body ground
    		Always
    		10 kΩ or higher
    A38-55 (VCPA) - Body ground
    		Always
    		10 kΩ or higher
    A38-56 (VCP2) - Body ground
    		Always
    		10 kΩ or higher
    for RHD
    Tester Connection
    		Condition
    		Specified Condition
    C46-90 (VCEG) - Body ground
    		Always
    		10 kΩ or higher
    C46-91 (VCVL) - Body ground
    		Always
    		10 kΩ or higher
    C46-70 (VCM) - Body ground
    		Always
    		10 kΩ or higher
    C46-66 (VCPM) - Body ground
    		Always
    		10 kΩ or higher
    A52-55 (VCPA) - Body ground
    		Always
    		10 kΩ or higher
    A52-56 (VCP2) - Body ground
    		Always
    		10 kΩ or higher

  1. Reconnect the throttle position sensor (for Bank 1) connector.

  1. Reconnect the throttle position sensor (for Bank 2) connector.

  1. Reconnect the No. 1 EGR valve connector.

  1. Reconnect the No. 2 EGR valve connector.

  1. Reconnect the accelerator pedal position sensor connector.

  1. Reconnect the manifold absolute pressure sensor connector.

  1. Reconnect the fuel pressure sensor connector.

  1. Reconnect the ECM connectors.



NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK

REPLACE ECM (Click here)