Ecd System (For Dpf) Vc Output Circuit

Engine Hybrid System. Hilux. Tgn26, 36 Kun25, 26, 35, 36 Ggn25
1Kd-Ftv Engine Control. Hilux. Tgn26, 36 Kun25, 26, 35, 36 Ggn25

DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

CHECK MIL

CHECK COMMUNICATION BETWEEN INTELLIGENT TESTER AND ECM

CHECK MIL (ACCELERATOR PEDAL POSITION SENSOR)

CHECK MIL (THROTTLE POSITION SENSOR)

CHECK MIL (FUEL PRESSURE SENSOR)

CHECK MIL (ELECTRIC EGR CONTROL VALVE ASSEMBLY)

CHECK MIL (DIFFERENTIAL PRESSURE SENSOR ASSEMBLY)

CHECK MIL (MANIFOLD ABSOLUTE PRESSURE SENSOR)

CHECK MIL (NOZZLE VANE POSITION SENSOR)

CHECK HARNESS AND CONNECTOR

ECD SYSTEM (for 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.

Hilux. Tgn26, 36 Kun25, 26, 35, 36 Ggn25.1Kd-Ftv Engine Control.Ecd System (For Dpf).Ecd System (For 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


Hilux. Tgn26, 36 Kun25, 26, 35, 36 Ggn25.1Kd-Ftv Engine Control.Ecd System (For Dpf).Ecd System (For Dpf) Vc Output Circuit


Hilux. Tgn26, 36 Kun25, 26, 35, 36 Ggn25.1Kd-Ftv Engine Control.Ecd System (For Dpf).Ecd System (For Dpf) Vc Output Circuit


Hilux. Tgn26, 36 Kun25, 26, 35, 36 Ggn25.1Kd-Ftv Engine Control.Ecd System (For Dpf).Ecd System (For Dpf) Vc Output Circuit


INSPECTION PROCEDURE

NOTICE:
  1. Inspect the fuses of circuits related to this system before performing the following inspection procedure.
  2. After replacing the ECM, the new ECM needs registration (HILUX_TGN26 RM0000012XK07EX.html) and initialization (HILUX_TGN26 RM000000TIN056X.html).
  3. After replacing the fuel supply pump assembly, the ECM needs initialization (HILUX_TGN26 RM000000TIN056X.html).
  4. After replacing an injector assembly, the ECM needs registration (HILUX_TGN26 RM0000012XK07EX.html).
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 (HILUX_TGN26 RM000000WZ10ZBX.html)
B


3.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
    Result
    		Proceed to
    MIL illuminates
    		A
    MIL does not illuminate
    		B

  1. Reconnect the accelerator pedal position sensor connector.



A
REPLACE ACCELERATOR PEDAL ROD ASSEMBLY (HILUX_TGN26 RM0000013ZF013X.html)
B


4.CHECK MIL (THROTTLE POSITION SENSOR)

  1. Disconnect the throttle 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 throttle position sensor connector.



A
REPLACE DIESEL THROTTLE BODY ASSEMBLY (HILUX_TGN26 RM0000013ZD01QX.html)
B


5.CHECK MIL (FUEL PRESSURE SENSOR)

  1. Disconnect the 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 fuel pressure sensor connector.



A
REPLACE COMMON RAIL ASSEMBLY (HILUX_TGN26 RM0000044W300PX.html)
B


6.CHECK MIL (ELECTRIC EGR CONTROL VALVE ASSEMBLY)

  1. Disconnect the electric EGR control valve 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

  1. Reconnect the electric EGR control valve assembly connector.



A
REPLACE ELECTRIC EGR CONTROL VALVE ASSEMBLY (HILUX_TGN26 RM000004QWK00HX.html)
B


7.CHECK MIL (DIFFERENTIAL PRESSURE SENSOR ASSEMBLY)

  1. Disconnect the differential pressure 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

  1. Reconnect the differential pressure sensor assembly connector.



A
REPLACE DIFFERENTIAL PRESSURE SENSOR ASSEMBLY (HILUX_TGN26 RM000003TI200KX.html)
B


8.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
    Result
    		Proceed to
    MIL illuminates
    		A
    MIL does not illuminate
    		B

  1. Reconnect the manifold absolute pressure sensor connector.



A
REPLACE MANIFOLD ABSOLUTE PRESSURE SENSOR
B


9.CHECK MIL (NOZZLE VANE POSITION SENSOR)

  1. Disconnect the nozzle vane 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 nozzle vane position sensor connector.



A
REPLACE TURBOCHARGER SUB-ASSEMBLY (HILUX_TGN26 RM000002S6F00NX.html)
B


10.CHECK HARNESS AND CONNECTOR

  1. Disconnect the accelerator pedal position sensor connector.

  1. Disconnect the throttle position sensor connector.

  1. Disconnect the fuel pressure sensor connector.

  1. Disconnect the electric EGR control valve assembly connector.

  1. Disconnect the differential pressure sensor assembly connector.

  1. Disconnect the nozzle vane position sensor 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:

    Tester Connection
    		Condition
    		Specified Condition
    G148-6 (VCPA) - Body ground
    		Always
    		10 kΩ or higher
    G148-4 (VCP2) - Body ground
    		Always
    		10 kΩ or higher
    C114-13 (VC) - Body ground
    		Always
    		10 kΩ or higher
    C113-13 (VCS) - Body ground
    		Always
    		10 kΩ or higher
    C114-11 (VNVC) - Body ground
    		Always
    		10 kΩ or higher

  1. Reconnect the accelerator pedal position sensor connector.

  1. Reconnect the throttle position sensor connector.

  1. Reconnect the fuel pressure sensor connector.

  1. Reconnect the electric EGR control valve assembly connector.

  1. Reconnect the differential pressure sensor assembly connector.

  1. Reconnect the nozzle vane position sensor connector.

  1. Reconnect the manifold absolute pressure sensor connector.

  1. Reconnect the ECM connectors.



NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK

REPLACE ECM (HILUX_TGN26 RM0000013Z001IX.html)