СИСТЕМА ECD VC Output Circuit

DESCRIPTION

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

INSPECTION PROCEDURE

PROCEDURE

1. Click here

   CHECK MIL

   
   

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

      Table 1. Result

      Condition	Proceed to
      MIL does not illuminate	A
      MIL illuminates	B

   
   
   • AClick here
   • BClick here
2. Click here

   CHECK CONNECTION BETWEEN GTS AND ECM

   
   

   1. Connect the GTS to the DLC3.

   2. Turn the ignition switch ON and GTS ON.

   3. Check the communication between the GTS and ECM.

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

   
   
   • AClick here
   • BClick here
3. Click here

   CHECK MIL (THROTTLE POSITION SENSOR)

   
   

   1. Disconnect the throttle position sensor connector.

   2. Turn the ignition switch ON.

   3. Check the MIL.

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

   4. Reconnect the throttle position sensor connector.

   
   
   • AClick here
   • BClick here
4. Click here

   CHECK MIL (MANIFOLD ABSOLUTE PRESSURE SENSOR)

   
   

   1. Disconnect the manifold absolute pressure sensor connector.

   2. Turn the ignition switch ON.

   3. Check the MIL.

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

   4. Reconnect the manifold absolute pressure sensor connector.

   
   
   • AClick here
   • BClick here
5. Click here

   CHECK MIL (ACCELERATOR PEDAL POSITION SENSOR)

   
   

   1. Disconnect the accelerator pedal position sensor connector.

   2. Turn the ignition switch ON.

   3. Check the MIL.

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

   4. Reconnect the accelerator position sensor connector.

   
   
   • AClick here
   • BClick here
6. Click here

   CHECK MIL (FUEL PRESSURE SENSOR)

   
   

   1. Disconnect the fuel pressure sensor connector.

   2. Turn the ignition switch ON.

   3. Check the MIL.

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

   4. Reconnect the fuel pressure sensor connector.

   
   
   • AClick here
   • BClick here
7. Click here

   CHECK HARNESS AND CONNECTOR (ECM - BODY GROUND)

   
   

   1. Disconnect the throttle position sensor connector.

   2. Disconnect the manifold absolute pressure sensor connector.

   3. Disconnect the fuel pressure sensor connector.

   4. Disconnect the accelerator pedal position sensor connector.

   5. Disconnect the ECM connectors.

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

      Standard Resistance
      Tester Connection Condition Specified Condition D105-97 (VCVL) - Body ground Always 10 kΩ or higher D105-93 (VCPM) - Body ground Always 10 kΩ or higher D105-68 (VCS) - Body ground Always 10 kΩ or higher B88-55 (VCPA) - Body ground Always 10 kΩ or higher B88-58 (VCP2) - Body ground Always 10 kΩ or higher

   7. Reconnect the throttle position sensor connector.

   8. Reconnect the manifold absolute pressure sensor connector.

   9. Reconnect the fuel pressure sensor connector.

   10. Reconnect the accelerator pedal position sensor connector.

   11. Reconnect the ECM connector.

   
   
   • OKClick here
   • NGClick here
8. Click here

   SYSTEM OK

9. Click here

   GO TO MIL CIRCUITClick here

10. Click here

    REPLACE DIESEL THROTTLE BODY ASSEMBLYClick here

11. Click here

    REPLACE MANIFOLD ABSOLUTE PRESSURE SENSOR

12. Click here

    REPLACE ACCELERATOR PEDAL ROD ASSEMBLYClick here

13. Click here

    REPLACE COMMON RAIL ASSEMBLYClick here

14. Click here

    REPAIR OR REPLACE HARNESS OR CONNECTOR

15. Click here

    REPLACE ECMClick here