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DTC P0720: Output Speed Sensor Circuit; DTC P0722: Output Speed Sensor Circuit No Signal [05/2013 - ]: Procedure

  1. READ VALUE USING TECHSTREAM (SPD (NOUT)) 
    1. Connect the Techstream to the DLC3.
    2. Turn the ignition switch to ON.
    3. Turn the Techstream on.
    4. Enter the following menus: Powertrain / Engine and ECT / Data List.
    5. In accordance with the display on the Techstream, read the Data List.
      Tester Display Measurement Item/Range Normal Condition Diagnostic Note
      SPD (NOUT) Secondary pulley speed (NOUT)/
      Min.: 0 rpm
      Max.: 12750 rpm
      • Vehicle stopped: 0 rpm
      • Vehicle cruising at approximately 60 km/h (37 mph): 2900 rpm
      -
      RESULT

      Result Proceed to
      Data display is not within Normal Condition range A
      Data display is within Normal Condition range B

    B → See step   4 

    A: Go to next step 

  2. INSPECT TRANSMISSION REVOLUTION SENSOR (NOUT) 
    1. Remove the transmission revolution sensor (NOUT). Refer to REMOVAL [05/2013 - ] and then connect the battery.
    2. Wave a magnetic object left and right in front of the transmission revolution sensor tip (5 mm gap or closer) to change the high/low signals while measuring the current.
      GTY344679Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      NOTE:

      Make sure to wave the magnetic object during the inspection. Current will not change without waving the magnetic object as indicated by the arrow in the illustration.

    3. Measure the current according to the value(s) in the table below.

      Standard Current

      Tester Connection Condition Specified Condition
      1 (NOTO) - 2 (NOTB) Low signal 4 to 8 mA
      High signal 12 to 16 mA
      TEXT IN ILLUSTRATION

      *1 Battery (12 V)
      *2 Ammeter
      *a Component without harness connected
      (Transmission Revolution Sensor (NOUT))
      *b 5 mm gap or closer

    NG → See step   6 

    OK: Go to next step 

  3. CHECK HARNESS AND CONNECTOR (TRANSMISSION REVOLUTION SENSOR (NOUT) - ECM) 
    1. Disconnect the B8 ECM connector.
    2. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      B18-1 (NOTO) - B8-125 (NOTO) Always Below 1 Ω
      B18-2 (NOTB) - B8-101 (NOTB) Always Below 1 Ω
      B8-101 (NOTB) or B18-2 (NOTB) - Body ground Always 10 kΩ or higher
      B8-125 (NOTO) or B18-1 (NOTO) - Body ground Always 10 kΩ or higher

    NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

    OK: Go to next step 

  4. REPLACE ECM See step   5 

    NEXT: Go to next step 

  5. PERFORM INITIALIZATION See step   6 

    NEXT → END 

  6. REPLACE TRANSMISSION REVOLUTION SENSOR (NOUT). Refer to  REMOVAL [05/2013 - ]