ELECTRONICALLY CONTROLLED BRAKE SYSTEM ABS Warning Light does not Come ON

DESCRIPTION

The skid control ECU is connected to the combination meter sub-assembly via CAN communication.

CAUTION / NOTICE / HINT

Note

When replacing the brake booster with master cylinder (skid control ECU), perform initialization and calibration of the linear solenoid valve Click here.

PROCEDURE


  1. CHECK CAN COMMUNICATION SYSTEM


    1. Check if a CAN communication system DTC is output Click here.

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

    B

    INSPECT CAN COMMUNICATION SYSTEM Click here

    A

  2. CHECK ABS WARNING LIGHT


    1. Disconnect the skid control ECU connector.

    2. Turn the power switch on (IG).

    3. Check that the ABS warning light comes on.

      OK
      The ABS warning light comes on.
      Result
      Result Proceed to
      OK (for LHD) A
      OK (for RHD) B
      NG C

      Tech Tips

      If troubleshooting has been carried out according to Problem Symptoms Table, refer back to the table and proceed to the next step before replacing the part Click here.


    A

    REPLACE BRAKE BOOSTER WITH MASTER CYLINDER Click here

    B

    REPLACE BRAKE BOOSTER WITH MASTER CYLINDER Click here

    C

  3. INSPECT COMBINATION METER SUB-ASSEMBLY


    1. Turn the power switch off (lock).

    2. Reconnect the skid control ECU connector.

    3. Perform the Active Test of the combination meter sub-assembly (meter CPU) using the GTS Click here.

    4. Check the combination meter sub-assembly.

      OK
      The ABS warning light turns on or off in accordance with the GTS operation.
      Result
      Result Proceed to
      OK (for LHD) A
      OK (for RHD) B
      NG (w/ Multi-information Display) C
      NG (w/o Multi-information Display) D

      Tech Tips

      If troubleshooting has been carried out according to Problem Symptoms Table, refer back to the table and proceed to the next step Click here.


    A

    REPLACE BRAKE BOOSTER WITH MASTER CYLINDER Click here

    B

    REPLACE BRAKE BOOSTER WITH MASTER CYLINDER Click here

    C

    REPLACE COMBINATION METER SUB-ASSEMBLY Click here

    D

    REPLACE METER CIRCUIT PLATE Click here