Ecd System Vc Output Circuit


DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

CHECK MIL

CHECK CONNECTION BETWEEN INTELLIGENT TESTER AND ECM

CHECK MIL (THROTTLE POSITION SENSOR)

CHECK MIL (MANIFOLD ABSOLUTE PRESSURE SENSOR)

CHECK MIL (ACCELERATOR PEDAL POSITION SENSOR)

CHECK MIL (FUEL PRESSURE SENSOR)

CHECK MIL (EGR VALVE 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 throttle body assembly, EGR valve position sensor, turbo pressure sensor, accelerator position sensor and fuel pressure sensor.

WIRING DIAGRAM


Toyota Fortuner. Ggn50, 60 Kun51, 61 Tgn51 Lan50.2Kd-Ftv Engine Control System.Ecd System.Ecd System Vc Output Circuit


Toyota Fortuner. Ggn50, 60 Kun51, 61 Tgn51 Lan50.2Kd-Ftv Engine Control System.Ecd System.Ecd System Vc Output Circuit


INSPECTION PROCEDURE

NOTICE:
After replacing the ECM, the new ECM needs registration (Toyota Fortuner RM0000012XK04AX.html) and initialization (Toyota Fortuner RM000000TIN04KX.html).
1.CHECK MIL

  1. Check that the Malfunction Indicator Lamp (MIL) lights up when turning the ignition switch ON.

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


B
SYSTEM OK
A


2.CHECK CONNECTION 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 intelligent tester and ECM.

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


B
GO TO MIL CIRCUIT (Toyota Fortuner RM000000WZ10R1X.html)
A


3.CHECK MIL (THROTTLE POSITION SENSOR)

  1. Disconnect the throttle 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

  1. Reconnect the throttle position sensor connector.



B
REPLACE DIESEL THROTTLE BODY ASSEMBLY (Toyota Fortuner RM0000013ZD01AX.html)
A


4.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

  1. Reconnect the manifold absolute pressure sensor connector.



B
REPLACE MANIFOLD ABSOLUTE PRESSURE SENSOR
A


5.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

  1. Reconnect the accelerator position sensor connector.



B
REPLACE ACCELERATOR PEDAL ROD ASSEMBLY (Toyota Fortuner RM0000013ZF00YX.html)
A


6.CHECK MIL (FUEL PRESSURE SENSOR)

  1. Disconnect the fuel 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

  1. Reconnect the fuel pressure sensor connector.



B
REPLACE COMMON RAIL ASSEMBLY (Toyota Fortuner RM000002SY501KX.html)
A


7.CHECK MIL (EGR VALVE POSITION SENSOR)

  1. Disconnect the EGR valve 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

  1. Reconnect the EGR valve position sensor connector.



B
REPLACE EGR VALVE ASSEMBLY (Toyota Fortuner RM000002RK901EX.html)
A


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

  1. Disconnect the throttle position sensor connector.

  1. Disconnect the manifold absolute pressure sensor connector.

  1. Disconnect the fuel pressure sensor connector.

  1. Disconnect the accelerator pedal position sensor connector.

  1. Disconnect the EGR valve position sensor connector.

  1. Disconnect the ECM connector.

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

    Standard Resistance:

    Tester Connection
    		Condition
    		Specified Condition
    E7-18 (VC) - Body ground
    		Always
    		10 kΩ or higher
    E6-2 (VCS) - Body ground
    		Always
    		10 kΩ or higher
    E4-26 (VCPA) - Body ground
    		Always
    		10 kΩ or higher
    E4-27 (VCP2) - Body ground
    		Always
    		10 kΩ or higher

  1. Reconnect the throttle position sensor connector.

  1. Reconnect the manifold absolute pressure sensor connector.

  1. Reconnect the fuel pressure sensor connector.

  1. Reconnect the accelerator pedal position sensor connector.

  1. Reconnect the EGR valve position sensor connector.

  1. Reconnect the ECM connector.



NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK

REPLACE ECM (Toyota Fortuner RM0000043H100CX.html)