ELECTRONICALLY CONTROLLED BRAKE SYSTEM ABS Warning Light does not Come ON

DESCRIPTION

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

WIRING DIAGRAM

Refer to ABS Warning Light Remains ON Click here.

INSPECTION PROCEDURE

Note

When replacing the 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 connectors.

    2. Turn the power switch on (IG).

    3. Check that the ABS warning light comes on.

      OK
      The ABS warning light comes on.

      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.


    NG

    INSPECT COMBINATION METER ASSEMBLY Click here

    OK

    REPLACE SKID CONTROL ECU Click here

  3. INSPECT COMBINATION METER ASSEMBLY


    1. Turn the power switch off.

    2. Reconnect the skid control ECU connectors.

    3. Perform the Active Test of the combination meter (meter CPU) using the intelligent tester Click here.

    4. Check the combination meter.

      OK
      The ABS warning light turns on or off in accordance with the intelligent tester operation.

      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.


    NG

    REPLACE COMBINATION METER ASSEMBLY Click here

    OK

    REPLACE SKID CONTROL ECU Click here