ANTI-LOCK BRAKE SYSTEM Brake Warning Light does not Come ON

DESCRIPTION

The brake actuator assembly (skid control ECU) is connected to the combination meter via CAN communication.

WIRING DIAGRAM

Refer to Brake Warning Light Remains ON Click here.

CAUTION / NOTICE / HINT

Note


  • When replacing the brake actuator assembly (skid control ECU) or deceleration sensor, be sure to perform deceleration sensor 0 point calibration and CVT oil pressure calibration after performing AT/CVT learned values initialization.

    for K310 Click here

    for K411 Click here

  • Inspect the fuses for circuits related to this system before performing the following inspection procedure.

  • Perform the test mode procedure after the initialization (perform the test mode start only after the brake actuator assembly (skid control ECU) is replaced).

    Tech Tips

    By performing the test mode start, the identification code of the brake actuator assembly (skid control ECU) is re-registered.

PROCEDURE


  1. CHECK CAN COMMUNICATION SYSTEM


    1. Check if CAN communication system DTCs are output Click here.

      Result
      Result Proceed to
      DTC is not output A
      DTC is output B

    B

    CHECK CAN COMMUNICATION SYSTEM Click here

    A

  2. CHECK BRAKE WARNING LIGHT


    1. Disconnect the A55 or A57 brake actuator assembly (skid control ECU) connector.

    2. Turn the ignition switch to ON.

    3. Check that the brake warning light comes on.

      Result
      Result Proceed to
      NG A
      OK (for LHD) B
      OK (for RHD) C

    4. Reconnect the A55 or A57 brake actuator assembly (skid control ECU) connector.


    B

    REPLACE BRAKE ACTUATOR ASSEMBLY (SKID CONTROL ECU) Click here

    C

    REPLACE BRAKE ACTUATOR ASSEMBLY (SKID CONTROL ECU) Click here

    A

  3. INSPECT COMBINATION METER ASSEMBLY


    1. Turn the ignition switch off.

    2. Connect the intelligent tester to the DLC3.

    3. Perform Active Test of the combination meter assembly using the intelligent tester Click here.

      OK
      The brake warning light turns ON or OFF in accordance with the intelligent tester.
      Result
      Result Proceed to
      NG A
      OK (for LHD) B
      OK (for RHD) C

    A

    REPLACE COMBINATION METER ASSEMBLY Click here

    B

    REPLACE BRAKE ACTUATOR ASSEMBLY (SKID CONTROL ECU) Click here

    C

    REPLACE BRAKE ACTUATOR ASSEMBLY (SKID CONTROL ECU) Click here