FixVault

Inspection Procedure

NOTE: When replacing the brake actuator assembly, perform zero point calibration (see CALIBRATION  ).

HINT:

If DTC C1249/49 is output, repair it before repairing DTC C1267/67 based on the flowchart below.

  1. READ VALUE OF TECHSTREAM (BRAKE PEDAL LOAD SENSING SWITCH) 
    1. Check the Data List for proper functioning of the brake pedal load sensing switch.

      ABS / VSC / TRAC: 

      MEASUREMENT ITEM/RANGE AND DIAGNOSTIC NOTE

      Tester Display Measurement Item/Range Normal Condition Diagnostic Note
      Brake Pedal Load Sensing SW Brake pedal load sensing switch / ON or OFF ON: Depressed brake pedal
      OFF: Released brake pedal
      -

      OK: ON (brake pedal is depressed) appears on the screen. 

    OK: Go to step  4

    NG: Go to next step. 

  2. INSPECT BRAKE PEDAL LOAD SENSING SWITCH 
    Fig 1: Identifying Brake Pedal Load Sensing Switch
    G05585030Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    NOTE:
    • Do not remove the brake pedal load sensing switch from the brake pedal.
    • When there is a malfunction in the brake pedal load sensing switch, replace the brake pedal.
    1. Turn the ignition switch OFF.
    2. Disconnect the brake pedal load sensing switch connector.
    3. Measure the resistance of the switch.

      Standard resistance 

      TESTER CONNECTION AND SPECIFIED CONDITION

      Tester Connection Condition Specified Condition
      2 - 1 Brake pedal depressed (OFF) 0.95 to 1.05 kΩ
      2 - 1 Brake pedal released (ON) 202.4 to 223.7 Ω

    NG: REPLACE BRAKE PEDAL SUPPORT ASSEMBLY 

    OK: Go to next step. 

  3. CHECK WIRE HARNESS (SKID CONTROL ECU - BRAKE PEDAL LOAD SENSING SWITCH) 
    1. Disconnect the A19 ECU connector.
    2. Fig 2: Identifying A19 And A2 Connectors Terminals
      G05585031Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    3. Measure the resistance of the wire harness side connectors.

      Standard resistance 

      TESTER CONNECTION AND SPECIFIED CONDITION

      Tester Connection Specified Condition
      A19-7 (FSW+) - A2-2 Below 1 Ω
      A19-7 (FSW+) - Body ground 10 kΩ or higher
      A2-1 - Body ground Below 1 Ω

    NG: REPAIR OR REPLACE HARNESS AND CONNECTOR 

    OK: Go to next step. 

  4. RECONFIRM DTC 
    1. Clear the DTC (see DTC CHECK / CLEAR  ).
    2. Check if the same DTC is recorded (see DTC CHECK / CLEAR  ).

      Result 

      DTC RESULT DESCRIPTION

      Result Proceed to
      DTC (C1267/67) is not output A
      DTC (C1267/67) is output B

    B: REPLACE ABS AND TRACTION ACTUATOR ASSEMBLY 

    A: USE SIMULATION METHOD TO CHECK