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СИСТЕМА SFI VC Output Circuit

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Информация добавлена 08-08-2017

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DTC Code DTC Name
  VC Output Circuit
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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.

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 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.

Tip:

Under normal conditions, the MIL is illuminated for several seconds when the engine switch is first turned on (IG). The MIL goes off when the engine is started.

A01A3YTE01
Table 2.
*a VVT Sensor (for Intake Side of Bank 1)
*b VVT Sensor (for Exhaust Side of Bank 1)
*c Accelerator Pedal Sensor Assembly
Table 1. *a VVT Sensor (for Intake Side of Bank 2) *b VVT Sensor (for Exhaust Side of Bank 2) *c Power Steering Oil Pressure Switch *d Throttle Body with Motor Assembly
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WIRING DIAGRAM

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PROCEDURE


  1. Click here

    CHECK MIL


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

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

  2. Click here

    CHECK COMMUNICATION BETWEEN GTS AND ECM


    1. Connect the GTS to the DLC3.

    2. Turn the engine switch on (IG) and turn the GTS on.

    3. Check the communication between the GTS and ECM.

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

  3. Click here

    CHECK MIL (THROTTLE BODY WITH MOTOR ASSEMBLY)


    1. Disconnect the C7 throttle body with motor assembly connector.

    2. Turn the engine switch on (IG).

    3. Check the MIL.

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

    4. Reconnect the C7 throttle body with motor assembly connector.


  4. Click here

    CHECK MIL (ACCELERATOR PEDAL SENSOR ASSEMBLY)


    1. Disconnect the A16 accelerator pedal sensor assembly connector.

    2. Turn the engine switch on (IG).

    3. Check the MIL.

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

    4. Reconnect the accelerator pedal sensor assembly connector.


  5. Click here

    CHECK MIL (VVT SENSOR FOR INTAKE SIDE OF BANK 1)


    1. Disconnect the C60 VVT sensor (for intake side of bank 1) connector.

    2. Turn the engine switch on (IG).

    3. Check the MIL.

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

    4. Reconnect the C60 VVT sensor (for intake side of bank 1) connector.


  6. Click here

    CHECK MIL (VVT SENSOR FOR INTAKE SIDE OF BANK 2)


    1. Disconnect the C61 VVT sensor (for intake side of bank 2) connector.

    2. Turn the engine switch on (IG).

    3. Check the MIL.

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

    4. Reconnect the C61 VVT sensor (for intake side of bank 2) connector.


  7. Click here

    CHECK MIL (VVT SENSOR FOR EXHAUST SIDE OF BANK 1)


    1. Disconnect the C62 VVT sensor (for exhaust side of bank 1) connector.

    2. Turn the engine switch on (IG).

    3. Check the MIL.

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

    4. Reconnect the C62 VVT sensor (for exhaust side of bank 1) connector.


  8. Click here

    CHECK MIL (VVT SENSOR FOR INTAKE SIDE OF BANK 2)


    1. Disconnect the C63 VVT sensor (for exhaust side of bank 2) connector.

    2. Turn the engine switch on (IG).

    3. Check the MIL.

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

    4. Reconnect the C63 VVT sensor (for exhaust side of bank 2) connector.


  9. Click here

    CHECK MIL (POWER STEERING OIL PRESSURE SWITCH)


    1. Disconnect the C23 power steering oil pressure switch connector.

    2. Turn the engine switch on (IG).

    3. Check the MIL.

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

    4. Reconnect the C23 power steering oil pressure switch connector.


  10. Click here

    CHECK HARNESS AND CONNECTOR


    1. Disconnect the C7 throttle body with motor assembly connector.

    2. Disconnect the A16 accelerator pedal sensor assembly connector.

    3. Disconnect the C60 VVT sensor (for intake side of bank 1) connector.

    4. Disconnect the C61 VVT sensor (for intake side of bank 2) connector.

    5. Disconnect the C62 VVT sensor (for exhaust side of bank 1) connector.

    6. Disconnect the C63 VVT sensor (for exhaust side of bank 2) connector.

    7. Disconnect the C23 power steering oil pressure switch connector.

    8. Disconnect the C28, C30 and G107 ECM connectors.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      G107-4 (VCPA) - Body ground Always 10 kΩ or higher
      G107-2 (VCP2) - Body ground Always 10 kΩ or higher
      C30-13 (VCTA) - Body ground Always 10 kΩ or higher
      C28-15 (VCV1) - Body ground Always 10 kΩ or higher
      C28-16 (VCV2) - Body ground Always 10 kΩ or higher

    10. Reconnect the C28, C30 and G107 ECM connectors.

    11. Reconnect the C7 throttle body with motor assembly connector.

    12. Reconnect the A16 accelerator pedal sensor assembly connector.

    13. Reconnect the C60 VVT sensor (for intake side of bank 1) connector.

    14. Reconnect the C61 VVT sensor (for intake side of bank 2) connector.

    15. Reconnect the C62 VVT sensor (for exhaust side of bank 1) connector.

    16. Reconnect the C63 VVT sensor (for exhaust side of bank 2) connector.

    17. Reconnect the C23 power steering oil pressure switch connector.

      Result
      Proceed to
      OK
      NG

    • OK

      REPLACE ECMClick here

    • NG

      REPAIR OR REPLACE HARNESS OR CONNECTOR