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Home >> Lexus >> 2011 >> IS 350C >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System (2GR-FSE) ( Diagnostic Codes & Circuit Tests) >> SFI System >> Circuit Tests >> VC Output Circuit >> Procedure
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VC Output Circuit: Procedure

  1. CHECK MIL 
    1. Check that Malfunction Indicator Lamp (MIL) illuminates when turning the engine switch on (IG).

      OK

      MIL lights up.

    NG → See step   2 

    OK → See step   13 

  2. CHECK CONNECTION BETWEEN TECHSTREAM AND ECM 
    1. Connect the Techstream to the DLC3.
    2. Turn the engine switch on (IG) and Techstream on.
    3. Check the communication between the Techstream and ECM.

      Result

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

    B → See step   14 

    A: Go to next step 

  3. CHECK MIL (THROTTLE POSITION SENSOR) 
    1. Disconnect the throttle body 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 throttle body connector.

    B → See step   15 

    A: Go to next step 

  4. CHECK MIL (ACCELERATOR PEDAL SENSOR) 
    1. Disconnect the accelerator pedal position sensor 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 position sensor connector.

    B → See step   16 

    A: Go to next step 

  5. CHECK MIL (VVT SENSOR FOR INTAKE CAMSHAFT BANK 1) 
    1. Disconnect the VVT sensor for intake camshaft 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 VVT sensor for intake camshaft bank 1 connector.

    B → See step   17 

    A: Go to next step 

  6. CHECK MIL (VVT SENSOR FOR EXHAUST CAMSHAFT BANK 1) 
    1. Disconnect the VVT sensor for exhaust camshaft 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 VVT sensor for exhaust camshaft bank 1 connector.

    B → See step   18 

    A: Go to next step 

  7. CHECK MIL (VVT SENSOR FOR INTAKE CAMSHAFT BANK 2) 
    1. Disconnect the VVT sensor for intake camshaft 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 VVT sensor for intake camshaft bank 2 connector.

    B → See step   19 

    A: Go to next step 

  8. CHECK MIL (VVT SENSOR FOR EXHAUST CAMSHAFT BANK 2) 
    1. Disconnect the VVT sensor for exhaust camshaft 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 VVT sensor for exhaust camshaft bank 2 connector.

    B → See step   20 

    A: Go to next step 

  9. CHECK MIL (FUEL PRESSURE SENSOR) 
    1. Disconnect the fuel pressure sensor 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 fuel pressure sensor connector.

    B → See step   21 

    A: Go to next step 

  10. CHECK MIL (CANISTER) 
    1. Disconnect the canister pump module 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 canister pump module connector.

    B → See step   22 

    A: Go to next step 

  11. CHECK HARNESS AND CONNECTOR 
    1. Disconnect the throttle body connector.
      Fig 1: E6, A5, E3 & A6 Connectors
      GTY348787Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Disconnect the accelerator pedal position sensor connector.
    3. Disconnect the VVT sensor for intake camshaft bank 1 connector.
    4. Disconnect the VVT sensor for exhaust camshaft bank 1 connector.
    5. Disconnect the VVT sensor for intake camshaft bank 2 connector.
    6. Disconnect the VVT sensor for exhaust camshaft bank 2 connector.
    7. Disconnect the fuel pressure sensor connector.
    8. Disconnect the canister pump module connector.
    9. Disconnect the ECM connectors.
    10. Measure the resistance according to the value(s) in the table below.

      Standard Resistance (Check for Short)

      Tester Connection Condition Specified Condition
      E3-20 (VCV2) - Body ground Always 10 kΩ or higher
      E3-23 (VCV1) - Body ground Always 10 kΩ or higher
      E3-27 (VCTA) - Body ground Always 10 kΩ or higher
      E6-19 (VCE2) - Body ground Always 10 kΩ or higher
      E6-22 (VCE1) - Body ground Always 10 kΩ or higher
      E6-31 (VCPR) - Body ground Always 10 kΩ or higher
      A5-22 (VCPP) - Body ground Always 10 kΩ or higher
      A6-27 (VCP2) - Body ground Always 10 kΩ or higher
      TEXT IN ILLUSTRATION

      *a Front view of wire harness connector
      (to ECM)      		 - -
    11. Reconnect the ECM connectors.
    12. Reconnect the canister pump module connector.
    13. Reconnect the fuel pressure sensor connector.
    14. Reconnect the VVT sensor for exhaust camshaft bank 2 connector.
    15. Reconnect the VVT sensor for intake camshaft bank 2 connector.
    16. Reconnect the VVT sensor for exhaust camshaft bank 1 connector.
    17. Reconnect the VVT sensor for intake camshaft bank 1 connector.
    18. Reconnect the accelerator pedal position sensor connector.
    19. Reconnect the throttle body connector.

    NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

    OK → See step   12 

  12. REPLACE ECM. Refer to  REMOVAL 
  13. PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE. Refer to  PROBLEM SYMPTOMS TABLE 
  14. GO TO MIL CIRCUIT. Refer to  MIL Circuit  
  15. REPLACE THROTTLE BODY ASSEMBLY. Refer to  REMOVAL 
  16. REPLACE ACCELERATOR PEDAL ASSEMBLY. Refer to  REMOVAL 
  17. REPLACE VVT SENSOR FOR INTAKE CAMSHAFT BANK 1. Refer to  REMOVAL 
  18. REPLACE VVT SENSOR FOR EXHAUST CAMSHAFT BANK 1. Refer to  REMOVAL 
  19. REPLACE VVT SENSOR FOR INTAKE CAMSHAFT BANK 2. Refer to  REMOVAL 
  20. REPLACE VVT SENSOR FOR EXHAUST CAMSHAFT BANK 2. Refer to  REMOVAL 
  21. REPLACE FUEL PRESSURE SENSOR. Refer to  REMOVAL 
  22. REPLACE CANISTER. Refer to  REMOVAL 
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