VEHICLE STABILITY CONTROL SYSTEM, Diagnostic DTC:C1267/67

DTC Code DTC Name
C1267/67 Brake Pedal Load Sensing Switch

DESCRIPTION

The brake pedal load sensing switch is turned on when the brake pedal is depressed with force exceeding a predetermined level.

The skid control ECU detects if the brake pedal is depressed or not via this circuit.

DTC No. DTC Detection Condition Trouble Area
C1267/67

When any of the following is detected:


  1. An open or short in the brake pedal load sensing switch continues for 0.3 seconds or more.

  2. Immediately after the engine switch is turned on (IG), the brake pedal load sensing switch is on and the stop light switch is off for 10 seconds or more.

  3. While the vehicle speed changes from 0 km/h (0 mph) to 30 km/h (18 mph), the condition that the brake pedal load sensing switch remains on occurs 5 times in succession.

  4. With the stop light switch on, the brake pedal load sensing switch off, and the master cylinder pressure 6 MPa or more, the deceleration is 0.4 G or more for 1 second or more.

  5. With the stop light switch on, the brake pedal load sensing switch off, and the master cylinder pressure 6 MPa or more, the vehicle speed is 0 km/h (0 mph) for 5 seconds or more.

  • Brake pedal load sensing switch

  • Brake pedal load sensing switch circuit

WIRING DIAGRAM

A01CG6EE02

INSPECTION PROCEDURE

Tech Tips

When C1249/49 is output together with C1267/67, inspect and repair the trouble areas indicated by C1249/49 first Click here.

PROCEDURE


  1. READ VALUE USING INTELLIGENT TESTER (STOP LIGHT SWITCH AND BRAKE PEDAL LOAD SENSING SWITCH)


    1. Connect the intelligent tester to the DLC3.

    2. Turn the engine switch on (IG).

    3. Select the Data List mode on the intelligent tester Click here.

      ABS/VSC/TRC
      Tester Display Measurement Item / Range Normal Condition Diagnostic Note
      Stop Light SW Stop light switch / ON or OFF

      ON: Brake pedal depressed

      OFF: Brake pedal released

      		 -
      Brake Pedal Load Sensing SW Brake pedal load sensing switch / ON or OFF

      ON: Brake pedal depressed beyond the specified point

      OFF: Brake pedal not depressed beyond the specified point

      		 -

    4. Check that the stop light switch display and brake pedal load sensing switch display observed on the intelligent tester change according to brake pedal operation.

      OK
      The intelligent tester displays ON or OFF according to brake pedal operation.

    5. Slowly depress the brake pedal, and check when the stop light switch and brake pedal load sensing switch turn on.

      OK
      First the stop light switch should turn on, and then the brake pedal load sensing switch should turn on.
      Result
      Result Proceed to
      OK A
      NG (The brake pedal load sensing switch does not turn on) B
      NG (The brake pedal load sensing switch turns on first) C

    B

    INSPECT BRAKE PEDAL LOAD SENSING SWITCH Click here

    C

    CHECK BRAKE PEDAL AND STOP LIGHT SWITCH INSTALLATION Click here

    A

  2. RECONFIRM DTC


    1. Turn the engine switch off.

    2. Clear the DTCs Click here.

    3. Start the engine.

    4. Perform a road test.

    5. Check if the same DTC is recorded Click here.

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

    B

    REPLACE BRAKE ACTUATOR ASSEMBLY Click here

    A

    CHECK FOR INTERMITTENT PROBLEMS (SYMPTOM SIMULATION) Click here

  3. INSPECT BRAKE PEDAL LOAD SENSING SWITCH

    A01CFEIE04
    A01CFHUE01

    Note


    • Do not remove the brake pedal load sensing switch from the brake pedal support assembly.

    • When there is a malfunction in the brake pedal load sensing switch, replace the brake pedal support assembly.


    1. Turn the engine switch off.

    2. Make sure that there is no looseness at the locking part and the connecting part of the connector.

    3. Disconnect the brake pedal load sensing switch connector.

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

      Standard Resistance
      Tester Connection Switch Condition Specified Condition
      2 (FSW+) - 1 (GND)

      Brake pedal load sensing switch off

      (Brake pedal depressed)

      		 950 to 1050 Ω
      2 (FSW+) - 1 (GND)

      Brake pedal load sensing switch on

      (Brake pedal released)

      		 203 to 223 Ω

    NG

    REPLACE BRAKE PEDAL SUPPORT ASSEMBLY (BRAKE PEDAL LOAD SENSING SWITCH) Click here

    OK

  4. CHECK HARNESS AND CONNECTOR (SKID CONTROL ECU - BRAKE PEDAL LOAD SENSING SWITCH)


    1. A01CCODE04

      Make sure that there is no looseness at the locking part and the connecting part of the connector.

    2. Disconnect the skid control ECU connector.

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

      Standard Resistance
      for RHD
      Tester Connection Condition Specified Condition
      A10-20 (FSW+) - A21-2 (FSW+) Always Below 1 Ω
      A10-20 (FSW+) - Body ground Always 10 kΩ or higher
      A21-1 (GND) - Body ground Always Below 1 Ω
      for LHD
      Tester Connection Condition Specified Condition
      A10-20 (FSW+) - A45-2 (FSW+) Always Below 1 Ω
      A10-20 (FSW+) - Body ground Always 10 kΩ or higher
      A45-1 (GND) - Body ground Always Below 1 Ω

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

    REPLACE BRAKE ACTUATOR ASSEMBLY Click here

  5. CHECK BRAKE PEDAL AND STOP LIGHT SWITCH INSTALLATION


    1. Turn the engine switch off.

    2. Check the brake pedal height and stop light switch installation Click here.

      OK
      The brake pedal height and stop light switch installation are normal.

    NG

    ADJUST BRAKE PEDAL OR STOP LIGHT SWITCH Click here

    OK

    REPLACE BRAKE PEDAL SUPPORT ASSEMBLY (BRAKE PEDAL LOAD SENSING SWITCH) Click here