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Home >> Toyota >> 2021 >> Highlander LE, 4WD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 36 (Electronically Controlled Brake System (HV) - Diagnostic Codes (06 Of 11)) >> ELECTRONICALLY CONTROLLED BRAKE SYSTEM (for HV Model) >> DTC C1103-1C: Brake Pedal Position Sensor "B" Supply Voltage Circuit Voltage Out of Range [11/2023 - ] >> Procedure

DTC C1103-1C: Brake Pedal Position Sensor "B" Supply Voltage Circuit Voltage Out of Range [11/2023 - ]: Procedure

WARNING: This page is about a different variant/trim than selected.
  1. CHECK BRAKE PEDAL 
    1. Check that the brake pedal and the brake pedal stroke sensor assembly are properly installed and that the pedal can be depressed normally.
    2. Check and adjust the brake pedal height.

      Refer to ADJUSTMENT [10/2022 - ]

    3. Adjust the brake pedal stroke sensor assembly.

      Refer to INSTALLATION [11/2023 - ]

      Result

      Proceed to
      NEXT

    Result: 

    NEXT 

    See step  2

  2. CHECK HARNESS AND CONNECTOR (BRAKE ACTUATOR ASSEMBLY - BRAKE PEDAL STROKE SENSOR ASSEMBLY) 
    1. Turn the ignition switch off.
    2. Make sure that there is no looseness at the locking part and the connecting part of the connectors.

      OK

      The connector is securely connected.

    3. Disconnect the A57 No. 2 skid control ECU (brake actuator assembly) connector.
    4. Disconnect the A90 brake pedal stroke sensor assembly connector.
    5. Check both the connector case and the terminals for deformation and corrosion.

      OK

      No deformation or corrosion.

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

      Standard Resistance

      Tester Connection Condition Specified Condition
      A57-26 (SKG2) - A90-3 (SKG2) Always Below 1 Ω
      A57-26 (SKG2) or A90-3 (SKG2) - Body ground Always 10 kΩ or higher
      A57-25 (VSK2) - A90-2 (VSK2) Always Below 1 Ω
      A57-25 (VSK2) or A90-2 (VSK2) - Body ground Always 10 kΩ or higher

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

    Result: 

    OK 

    See step  3

  3. INSPECT BRAKE ACTUATOR ASSEMBLY (SENSOR OUTPUT) 
    1. Reconnect the A57 No. 2 skid control ECU (brake actuator assembly) connector.
      GTY1180048Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Front view of wire harness connector
      (to Brake Pedal Stroke Sensor Assembly)
    2. Turn the ignition switch to ON.
    3. Measure the voltage according to the value(s) in the table below.

      Standard Voltage

      Tester Connection Condition Specified Condition
      A90-2 (VSK2) - A90-3 (SKG2) Ignition switch ON 4.84 to 5.16 V

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

    REPLACE BRAKE PEDAL STROKE SENSOR ASSEMBLY. Refer to  REMOVAL [11/2023 - ] 

    Result: 

    NG 

    REPLACE BRAKE ACTUATOR ASSEMBLY. Refer to  REMOVAL [11/2023 - ] 

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