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Home >> Toyota >> 2019 >> Sequoia SR5, 4WD >> Repair and Diagnosis >> External Pages >> Different car >> Section 37 (Smart Key System (Keyless Start) - Diagnostic Codes & Symptom Tests) >> SMART KEY SYSTEM (for Start Function) >> DTC B2282: Vehicle Speed Signal Malfunction; DTC B2283: Vehicle Speed Sensor Malfunction [08/2019 - ] >> Procedure

DTC B2282: Vehicle Speed Signal Malfunction; DTC B2283: Vehicle Speed Sensor Malfunction [08/2019 - ]: Procedure

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  1. READ VALUE USING TECHSTREAM (VEHICLE SPEED METER) 
    1. Connect the Techstream to the DLC3.
    2. Turn the engine switch on (IG).
    3. Turn the Techstream on.
    4. Enter the following menus: Body Electrical / Combination Meter / Data List.
    5. Read the Data List according to the display on the Techstream.
      COMBINATION METER

      Tester Display Measurement Item/Range Normal Condition Diagnostic Note
      Vehicle Speed Meter Vehicle speed/
      Min.: 0 km/h (0 mph), Max.: 255 km/h (158 mph)      		 Almost same as actual vehicle speed -

      HINT: 

      Using a speedometer tester, check the actual vehicle speed and the vehicle speed displayed on the Techstream.

      OK

      Vehicle speed displayed on the Techstream is almost the same as the actual vehicle speed measured using a speedometer tester.

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    GO TO METER / GAUGE SYSTEM (Speedometer Malfunction). Refer to  Speedometer Malfunction [08/2019 - ] 

    Result: 

    OK 

    See step  2

  2. READ VALUE USING TECHSTREAM (VEHICLE SPEED SIGNAL) 
    1. Enter the following menus: Body Electrical / Power Source Control / Data List.
    2. Read the Data List according to the display on the Techstream.
      POWER SOURCE CONTROL

      Tester Display Measurement Item/Range Normal Condition Diagnostic Note
      Vehicle Speed Signal Vehicle being driven or stopped/
      Stop or Run      		 Stop: Vehicle stopped
      Run: Vehicle being driven at 5 km/h (3 mph) or more      		 -

      OK

      The Techstream display changes correctly in response to the vehicle condition.

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

    GO TO METER / GAUGE SYSTEM (HOW TO PROCEED WITH TROUBLESHOOTING). Refer to  HOW TO PROCEED WITH TROUBLESHOOTING [08/2015 - ] 

    Result: 

    NG 

    See step  3

  3. CHECK HARNESS AND CONNECTOR (CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) - COMBINATION METER ASSEMBLY) 
    1. Disconnect the H199 certification ECU (smart key ECU assembly) connector.
    2. Disconnect the H139 combination meter assembly connector.
    3. Disconnect the A27 ECM connector.
    4. w/ Intuitive Parking Assist System:

      Disconnect the H128 clearance warning ECU assembly connector.

    5. Disconnect the H202 radio and display receiver assembly connector.
    6. w/ Navigation System:

      Disconnect the H206 navigation ECU connector.

    7. for 14 Speakers:

      Disconnect the H209 stereo component amplifier assembly connector.

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

      Standard Resistance

      Tester Connection Condition Specified Condition
      H139-29 (+S) - H199-5 (SPD) Always Below 1 Ω
      H139-29 (+S) or H199-5 (SPD) - Other terminals and body ground Always 10 kΩ or higher
    9. Reconnect the H199 certification ECU (smart key ECU assembly) connector.
    10. Reconnect the H139 combination meter assembly connector.
    11. Reconnect the A27 ECM connector.
    12. w/ Intuitive Parking Assist System:

      Reconnect the H128 clearance warning ECU assembly connector.

    13. Reconnect the H202 radio and display receiver assembly connector.
    14. w/ Navigation System:

      Reconnect the H206 navigation ECU connector.

    15. for 14 Speakers:

      Reconnect the H209 stereo component amplifier assembly connector.

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

    Result: 

    OK 

    See step  4

  4. CHECK CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) 
    1. Using an oscilloscope, check the waveform.
      GTY924215Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Component with harness connected
      (Certification ECU (Smart Key ECU Assembly))      		 *b Waveform

      OK

      Tester Connection Condition Tool Setting Specified Condition
      H199-5 (SPD) - H199-11 (E) Vehicle being driven at approximately 5 km/h (3 mph) 5 V/DIV., 20 ms./DIV. Pulse generation
      (See waveform)

      HINT: 

      The wavelength becomes shorter as the vehicle speed increases.

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

    REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY). Refer to  REMOVAL [08/2019 - ] 

    Result: 

    NG 

    See step  5

  5. CHECK VEHICLE TYPE 
    1. Check vehicle condition.

      Result

      Result  Proceed to 
      w/ Intuitive Parking Assist System A
      w/o Intuitive Parking Assist System B

    Result: 

    B 

    See step  7

    Result: 

    A 

    See step  6

  6. CHECK HARNESS AND CONNECTOR (EACH ECU - COMBINATION METER ASSEMBLY) 
    1. Disconnect the combination meter assembly connector.
      GTY851450Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Front view of wire harness connector
      (to Combination Meter Assembly)
    2. Disconnect the H128 clearance warning ECU assembly connector.
    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      H139-29 (+S) - Body ground Always 10 kΩ or higher
    4. Reconnect the combination meter assembly connector.

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

    REPLACE CLEARANCE WARNING ECU ASSEMBLY. Refer to  REMOVAL [08/2019 - ] 

    Result: 

    NG 

    See step  7

  7. CHECK VEHICLE TYPE 
    1. Check vehicle condition.

      Result

      Result  Proceed to 
      for 14 Speakers A
      except 14 Speakers B

    Result: 

    B 

    See step  9

    Result: 

    A 

    See step  8

  8. CHECK HARNESS AND CONNECTOR (EACH ECU - COMBINATION METER ASSEMBLY) 
    1. Disconnect the combination meter assembly connector.
      GTY851450Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Front view of wire harness connector
      (to Combination Meter Assembly)
    2. Disconnect the H209 stereo component amplifier assembly connector.
    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      H139-29 (+S) - Body ground Always 10 kΩ or higher
    4. Reconnect the combination meter assembly connector.

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

    REPLACE STEREO COMPONENT AMPLIFIER ASSEMBLY. Refer to  REMOVAL [08/2019 - ] 

    Result: 

    NG 

    See step  9

  9. CHECK VEHICLE TYPE 
    1. Check vehicle condition.

      Result

      Result  Proceed to 
      w/ Navigation System A
      w/o Navigation System B

    Result: 

    B 

    See step  11

    Result: 

    A 

    See step  10

  10. CHECK HARNESS AND CONNECTOR (EACH ECU - COMBINATION METER ASSEMBLY) 
    1. Disconnect the combination meter assembly connector.
      GTY851450Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Front view of wire harness connector
      (to Combination Meter Assembly)
    2. Disconnect the H206 navigation ECU connector.
    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      H139-29 (+S) - Body ground Always 10 kΩ or higher
    4. Reconnect the combination meter assembly connector.

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

    REPLACE NAVIGATION ECU. Refer to  REMOVAL [08/2019 - ] 

    Result: 

    NG 

    See step  11

  11. CHECK HARNESS AND CONNECTOR (EACH ECU - COMBINATION METER ASSEMBLY) 
    1. Disconnect the combination meter assembly connector.
      GTY851450Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Front view of wire harness connector
      (to Combination Meter Assembly)
    2. Disconnect the A24 ECM connector.
    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      H139-29 (+S) - Body ground Always 10 kΩ or higher

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

    REPLACE ECM. Refer to  REMOVAL [08/2015 - ] 

    Result: 

    NG 

    See step  12

  12. CHECK HARNESS AND CONNECTOR (EACH ECU - COMBINATION METER ASSEMBLY) 
    1. Disconnect the J202 radio and display receiver assembly connector.
      GTY851450Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Front view of wire harness connector
      (to Combination Meter Assembly)
    2. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      H139-29 (+S) - Body ground Always 10 kΩ or higher

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

    REPLACE RADIO AND DISPLAY RECEIVER ASSEMBLY. Refer to  REMOVAL [08/2019 - ] 

    Result: 

    NG 

    REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY). Refer to  REMOVAL [08/2019 - ] 

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