LEMON Manuals: Even more car manuals for everyone
Home >> Toyota >> 2019 >> Highlander Limited, FWD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 23 (SFI System [1AR-FE] - Diagnostics & Circuit Tests - (Except Hybrid)) >> SFI System >> Circuit Tests >> VC Output Circuit [12/2013 - ] >> Procedure

VC Output Circuit [12/2013 - ]: Procedure

WARNING: This page is about a different variant/trim than selected.
  1. CHECK CONNECTION BETWEEN TECHSTREAM AND ECM 
    1. Connect the Techstream to the DLC3.
    2. Turn the ignition switch to ON.
    3. Turn the Techstream on.
    4. Check the communication between the Techstream and ECM.

      HINT: 

      It can be checked using the "Engine and ECT" item of the Data List.

      Result

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

    Result:  2

    B 

    PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE. Refer to  PROBLEM SYMPTOMS TABLE [12/2013 - ] 

    Result:  1

    A 

    See step  2

  2. CHECK EFI NO. 2 FUSE VOLTAGE 
    GTY695712Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    *1 No. 1 Engine Room Relay Block and No. 1 Junction Block Assembly
    *2 EFI NO. 2 Fuse
    1. Turn the ignition switch to ON.
    2. Measure the voltage according to the value(s) in the table below.

      Standard Voltage

      Tester Connection Condition Specified Condition
      1 (EFI NO. 2 fuse) - Body ground Ignition switch ON 11 to 14 V

      HINT: 

      • Check the fuse with it installed to the No. 1 engine room relay block and No. 1 junction block assembly.
      • If the result is not as specified, since current is not flowing to the +B and +B2 terminals of the ECM, the system may not be started.

      Result

      Proceed to
      OK
      NG

    Result:  2

    NG 

    GO TO ECM POWER SOURCE CIRCUIT 

    Result:  1

    OK 

    See step  3

  3. CHECK CONNECTION BETWEEN TECHSTREAM AND ECM (THROTTLE POSITION SENSOR) 
    1. Disconnect the throttle body with motor assembly connector.
    2. Turn the ignition switch to ON.
    3. Turn the Techstream on.
    4. Check the communication between the Techstream and ECM.

      HINT: 

      It can be checked using the "Engine and ECT" item of the Data List.

      Result

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

      HINT: 

      Perform "Inspection After Repair" after replacing the throttle body with motor assembly.

      Refer to INITIALIZATION [12/2013 - ]

    Result:  2

    B 

    REPLACE THROTTLE BODY WITH MOTOR ASSEMBLY. Refer to  REMOVAL [12/2013 - ] 

    Result:  1

    A 

    See step  4

  4. CHECK CONNECTION BETWEEN TECHSTREAM AND ECM (ACCELERATOR PEDAL POSITION SENSOR ASSEMBLY) 
    1. Disconnect the accelerator pedal sensor assembly connector.
    2. Turn the ignition switch to ON.
    3. Turn the Techstream on.
    4. Check the communication between the Techstream and ECM.

      HINT: 

      It can be checked using the "Engine and ECT" item of the Data List.

      Result

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

    Result:  2

    B 

    REPLACE ACCELERATOR PEDAL SENSOR ASSEMBLY. Refer to  REMOVAL [12/2013 - ] 

    Result:  1

    A 

    See step  5

  5. CHECK CONNECTION BETWEEN TECHSTREAM AND ECM (CANISTER PUMP MODULE) 
    1. Disconnect the canister pump module connector.
    2. Turn the ignition switch to ON.
    3. Turn the Techstream on.
    4. Check the communication between the Techstream and ECM.

      HINT: 

      It can be checked using the "Engine and ECT" item of the Data List.

      Result

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

    Result:  2

    B 

    REPLACE CANISTER PUMP MODULE. Refer to  REMOVAL [12/2013 - 11/2016]  Refer to  REMOVAL [11/2016 - ] 

    Result:  1

    A 

    See step  6

  6. CHECK CONNECTION BETWEEN TECHSTREAM AND ECM (INTAKE AIR CONTROL VALVE ACTUATOR (FOR TUMBLE CONTROL VALVE)) 
    1. Disconnect the intake air control valve actuator (for tumble control valve) connector.
    2. Turn the ignition switch to ON.
    3. Turn the Techstream on.
    4. Check the communication between the Techstream and ECM.

      HINT: 

      It can be checked using the "Engine and ECT" item of the Data List.

      Result

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

    Result:  2

    B 

    REPLACE INTAKE AIR CONTROL VALVE ACTUATOR (FOR TUMBLE CONTROL VALVE). Refer to  REMOVAL [12/2013 - ] 

    Result:  1

    A 

    See step  7

  7. CHECK CONNECTION BETWEEN TECHSTREAM AND ECM (CAMSHAFT POSITION SENSOR (FOR INTAKE CAMSHAFT)) 
    1. Disconnect the camshaft position sensor (for intake camshaft) connector.
    2. Turn the ignition switch to ON.
    3. Turn the Techstream on.
    4. Check the communication between the Techstream and ECM.

      HINT: 

      It can be checked using the "Engine and ECT" item of the Data List.

      Result

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

    Result:  2

    B 

    REPLACE CAMSHAFT POSITION SENSOR (FOR INTAKE CAMSHAFT). Refer to  REMOVAL [12/2013 - ] 

    Result:  1

    A 

    See step  8

  8. CHECK CONNECTION BETWEEN TECHSTREAM AND ECM (CAMSHAFT POSITION SENSOR (FOR EXHAUST CAMSHAFT)) 
    1. Disconnect the camshaft position sensor (for exhaust camshaft) connector.
    2. Turn the ignition switch to ON.
    3. Turn the Techstream on.
    4. Check the communication between the Techstream and ECM.

      HINT: 

      It can be checked using the "Engine and ECT" item of the Data List.

      Result

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

    Result:  2

    B 

    REPLACE CAMSHAFT POSITION SENSOR (FOR EXHAUST CAMSHAFT). Refer to  REMOVAL [12/2013 - ] 

    Result:  1

    A 

    See step  9

  9. CHECK HARNESS AND CONNECTOR 
    1. Disconnect the throttle body with motor assembly connector.
    2. Disconnect the accelerator pedal sensor assembly connector.
    3. Disconnect the canister pump module connector.
    4. Disconnect the intake air control valve actuator (for tumble control valve) connector.
    5. Disconnect the camshaft position sensor (for intake camshaft) connector.
    6. Disconnect the camshaft position sensor (for exhaust camshaft) connector.
    7. Disconnect the ECM connectors.
    8. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      C1-125 (VCTA) - Body ground Always 10 kΩ or higher
      A43-53 (VCPA) - Body ground Always 10 kΩ or higher
      A43-56 (VCP2) - Body ground Always 10 kΩ or higher
      C1-130 (VCIA) - Body ground Always 10 kΩ or higher
      A43-34 (VCPP) - Body ground Always 10 kΩ or higher
      C1-111 (VCE1) - Body ground Always 10 kΩ or higher
      C1-113 (VCV1) - Body ground Always 10 kΩ or higher
      2 (EFI NO. 2 fuse) - A43-2 (+B) Always Below 1 Ω
      2 (EFI NO. 2 fuse) - A43-3 (+B2) Always Below 1 Ω
      A43-2 (+B) - Body ground Always 10 kΩ or higher
      A43-3 (+B2) - Body ground Always 10 kΩ or higher

      Result

      Proceed to
      OK
      NG

    Result:  1

    OK 

    REPLACE ECM. Refer to  REMOVAL [12/2013 - ] 

    Result:  2

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

scientia non olet · About LEMON Manuals