Ecd System Vc Output Circuit


DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

CHECK MIL

CHECK CONNECTION BETWEEN GTS AND ECM

CHECK MIL (MANIFOLD ABSOLUTE PRESSURE SENSOR)

CHECK MIL (ACCELERATOR PEDAL POSITION SENSOR)

CHECK HARNESS AND CONNECTOR (ECM - BODY GROUND)

ECD SYSTEM - VC Output Circuit


DESCRIPTION

The VC voltage (5 V) is generated in the ECM. The voltage is used to supply power to the manifold absolute pressure sensor and accelerator pedal position sensor.

WIRING DIAGRAM


Land Cruiser, Land Cruiser Prado. Grj150 Trj150,155 Kdj150,155 Lj150, Gdj150,155.5L-E Engine Control.Ecd System.Ecd 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
    Condition
    		Proceed to
    MIL does not illuminate
    		A
    MIL illuminates
    		B


B
SYSTEM OK
A


2.CHECK CONNECTION BETWEEN GTS AND ECM

  1. Connect the GTS to the DLC3.

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

  1. Check the communication between the GTS and ECM.

    Result:

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


B
GO TO MIL CIRCUIT (LandCruiser RM000000ZQY02CX.html)
A


3.CHECK MIL (MANIFOLD ABSOLUTE PRESSURE SENSOR)

  1. Disconnect the manifold absolute pressure sensor connector.

  1. Turn the ignition switch to ON.

  1. Check the MIL.

    Result:

    Condition
    		Proceed to
    MIL does not illuminate
    		A
    MIL illuminates
    		B


B
REPLACE MANIFOLD ABSOLUTE PRESSURE SENSOR
A


4.CHECK MIL (ACCELERATOR PEDAL POSITION SENSOR)

  1. Disconnect the accelerator pedal position sensor connector.

  1. Turn the ignition switch to ON.

  1. Check the MIL.

    Result:

    Condition
    		Proceed to
    MIL does not illuminate
    		A
    MIL illuminates
    		B


B
REPLACE ACCELERATOR PEDAL ROD ASSEMBLY (LandCruiser RM00000463000AX.html)
A


5.CHECK HARNESS AND CONNECTOR (ECM - BODY GROUND)

  1. Disconnect the manifold absolute pressure sensor connector.

  1. Disconnect the accelerator pedal position sensor connector.

  1. Disconnect the ECM connectors.

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

    Standard Resistance:

    Tester Connection
    		Condition
    		Specified Condition
    C162-24 (VCPM) - Body ground
    		Always
    		10 kΩ or higher
    G183-26 (VCPA) - Body ground
    		Always
    		10 kΩ or higher
    G183-23 (VCP2) - Body ground
    		Always
    		10 kΩ or higher


NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK

REPLACE ECM (LandCruiser RM000000VW203FX.html)