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Home >> Toyota >> 2021 >> Highlander LE, 4WD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 106 (Electronically Controlled Brake System (HV) - Diagnostic Codes (01 Of 11)) >> ELECTRONICALLY CONTROLLED BRAKE SYSTEM (for HV Model) >> DTC C0500-1F: Left Front Wheel Speed Sensor Circuit Intermittent [10/2021 - ] >> Procedure

DTC C0500-1F: Left Front Wheel Speed Sensor Circuit Intermittent [10/2021 - ]: Procedure

WARNING: This page is about a different variant/trim than selected.
  1. READ VALUE USING GTS (FL WHEEL SPEED AND MOMENTARY INTERRUPTION) 
    1. While monitoring the values of the Data List, perform a road test and attempt to reproduce the problem symptoms based on the interview with the customer and the vehicle conditions stored as Freeze Frame Data when the DTC was stored.

      Refer to DATA LIST / ACTIVE TEST [12/2019 - 11/2023] , or refer to DATA LIST / ACTIVE TEST [11/2023 - ]

      Chassis > Brake/EPB > Data List 

      Tester Display Measurement Item Range Normal Condition Diagnostic Note
      FL Wheel Speed Front wheel speed sensor LH reading Min.: 0.0 km/h (0 mph)
      Max.: 6553.5 km/h (4072 mph)      		 Vehicle stopped: 0.0 km/h (0 mph) When driving at constant speed: No large fluctuations
      FL Speed Open Front speed sensor LH open detection Normal / Under intermittent Normal: Normal
      Under intermittent: Momentary interruption      		 -

      Chassis > Brake/EPB > Data List 

      Tester Display
      FL Wheel Speed
      FL Speed Open

      OK

      The values change in accordance with the operation of the vehicle and there is no intermittent operation.

      NOTE:

      Perform the above inspection before removing the sensor and connector.

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

    USE SIMULATION METHOD TO CHECK. Refer to  HOW TO PROCEED WITH TROUBLESHOOTING [12/2019 - ] 

    Result: 

    NG 

    See step  2

  2. CHECK FRONT SPEED SENSOR LH INSTALLATION 
    1. Turn the ignition switch off.
      GTY453396Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *1 Front Speed Sensor LH
      *a Correct
      *b Incorrect
      *c 8.5 N*m (87 kgf*cm, 75 in.*lbf)
      *d No clearance
    2. Check the front speed sensor LH installation.

      OK

      There is no clearance between the front speed sensor LH and front steering knuckle LH.

      The installation bolt is tightened properly.

      Torque 

      8.5 N*m (87 kgf*cm, 75 in.*lbf)

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    INSTALL FRONT SPEED SENSOR LH CORRECTLY. Refer to  INSTALLATION [12/2019 - ] 

    Result: 

    OK 

    See step  3

  3. CHECK FRONT SPEED SENSOR LH (CHECK FOR FOREIGN MATTER) 
    1. Remove the front speed sensor LH, and confirm that there is no foreign matter, oil or grease on the front speed sensor tip LH.

      OK

      The front speed sensor tip LH is free of oil and foreign matter.

      HINT: 

      If foreign matter of 1mm x 1mm or more is adhered to the front speed sensor LH, this DTC may be stored.

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    See step  7

    Result: 

    OK 

    See step  4

  4. CHECK FRONT SPEED SENSOR ROTOR LH (CHECK FOR FOREIGN MATTER) 
    1. Confirm that there is no foreign matter, oil or grease on the front speed sensor rotor LH.

      OK

      The front speed sensor rotor LH is free of oil and foreign matter.

      HINT: 

      • If foreign matter of 1mm x 1mm or more is adhered to the front speed sensor rotor LH, this DTC may be stored.
      • The front speed sensor rotor LH is incorporated into the front axle hub sub-assembly LH.

        If the front speed sensor rotor LH needs to be replaced, replace it together with the front axle hub sub-assembly LH.

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

    REPLACE FRONT SPEED SENSOR LH AND COMPONENT WITH FRONT SPEED SENSOR ROTOR LH 

    for Front Speed Sensor LH: Refer to REMOVAL [12/2019 - 10/2022] , or refer to REMOVAL [10/2022 - ]

    for Front Speed Sensor Rotor LH: Refer to REMOVAL [12/2019 - 10/2022] , or refer to REMOVAL [10/2022 - 11/2023] , or refer to REMOVAL [11/2023 - ]

    Result: 

    NG 

    See step  5

  5. CLEAN FRONT SPEED SENSOR ROTOR LH 
    1. Clean the front speed sensor rotor LH.
      NOTE:

      Do not use parts cleaner when cleaning the front speed sensor rotor LH.

      Result

      Proceed to
      NEXT

    Result: 

    NEXT 

    See step  6

  6. READ VALUE USING GTS (FL WHEEL SPEED AND MOMENTARY INTERRUPTION) 
    1. While monitoring the values of the Data List, perform a road test and attempt to reproduce the problem symptoms based on the interview with the customer and the vehicle conditions stored as Freeze Frame Data when the DTC was stored.

      Refer to DATA LIST / ACTIVE TEST [12/2019 - 11/2023] , or refer to DATA LIST / ACTIVE TEST [11/2023 - ]

      Chassis > Brake/EPB > Data List 

      Tester Display Measurement Item Range Normal Condition Diagnostic Note
      FL Wheel Speed Front wheel speed sensor LH reading Min.: 0.0 km/h (0 mph)
      Max.: 6553.5 km/h (4072 mph)      		 Vehicle stopped: 0.0 km/h (0 mph) When driving at constant speed: No large fluctuations
      FL Speed Open Front speed sensor LH open detection Normal / Under intermittent Normal: Normal
      Under intermittent: Momentary interruption      		 -

      Chassis > Brake/EPB > Data List 

      Tester Display
      FL Wheel Speed
      FL Speed Open

      OK

      The values change in accordance with the operation of the vehicle and there is no intermittent operation.

      NOTE:

      Perform the above inspection before removing the sensor and connector.

      HINT: 

      The front speed sensor rotor LH is incorporated into the front axle hub sub-assembly LH.

      If the front speed sensor rotor LH needs to be replaced, replace it together with the front axle hub sub-assembly LH.

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

    END 

    Result: 

    NG 

    REPLACE FRONT SPEED SENSOR LH AND COMPONENT WITH FRONT SPEED SENSOR ROTOR LH 

    for Front Speed Sensor LH: Refer to REMOVAL [12/2019 - 10/2022] , or refer to REMOVAL [10/2022 - ]

    for Front Speed Sensor Rotor LH: Refer to REMOVAL [12/2019 - 10/2022] , or refer to REMOVAL [10/2022 - 11/2023] , or refer to REMOVAL [11/2023 - ]

  7. CLEAN FRONT SPEED SENSOR LH 
    1. Clean the front speed sensor LH.
      NOTE:

      When cleaning the front speed sensor LH, make sure to clean the installation hole before installation.

      Result

      Proceed to
      NEXT

    Result: 

    NEXT 

    See step  8

  8. READ VALUE USING GTS (FL WHEEL SPEED AND MOMENTARY INTERRUPTION) 
    1. While monitoring the values of the Data List, perform a road test and attempt to reproduce the problem symptoms based on the interview with the customer and the vehicle conditions stored as Freeze Frame Data when the DTC was stored.

      Refer to DATA LIST / ACTIVE TEST [12/2019 - 11/2023] , or refer to DATA LIST / ACTIVE TEST [11/2023 - ]

      Chassis > Brake/EPB > Data List 

      Tester Display Measurement Item Range Normal Condition Diagnostic Note
      FL Wheel Speed Front wheel speed sensor LH reading Min.: 0.0 km/h (0 mph)
      Max.: 6553.5 km/h (4072 mph)      		 Vehicle stopped: 0.0 km/h (0 mph) When driving at constant speed: No large fluctuations
      FL Speed Open Front speed sensor LH open detection Normal / Under intermittent Normal: Normal
      Under intermittent: Momentary interruption      		 -

      Chassis > Brake/EPB > Data List 

      Tester Display
      FL Wheel Speed
      FL Speed Open

      OK

      The values change in accordance with the operation of the vehicle and there is no intermittent operation.

      NOTE:

      Perform the above inspection before removing the sensor and connector.

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

    END 

    Result: 

    NG 

    See step  4

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