VEHICLE STABILITY CONTROL SYSTEM ABS Warning Light does not Come ON

DESCRIPTION

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

CAUTION / NOTICE / HINT

Note

When replacing the skid control ECU (brake actuator assembly), perform system variant learning and acceleration sensor zero point calibration.

Click here

PROCEDURE


  1. CHECK CAN COMMUNICATION SYSTEM


    1. Check if CAN communication system DTCs are output.

      Click here

      Result
      Result Proceed to
      DTCs are not output A
      DTCs are output B

    B

    INSPECT CAN COMMUNICATION SYSTEM Click here

    A

  2. PERFORM ACTIVE TEST USING GTS (ABS WARNING LIGHT)


    1. Enter the following menus: Chassis / ABS/VSC/TRC / Active Test.


      Chassis > ABS/VSC/TRC > Active Test
      Tester Display Measurement Item Control Range Diagnostic Note
      ABS Warning Light ABS warning light Warning light OFF/ON Observe combination meter assembly

      Chassis > ABS/VSC/TRC > Data List
      Tester Display Measurement Item Range Normal Condition Diagnostic Note
      ABS Warning Light ABS warning light ON or OFF

      ON: Warning light on

      OFF: Warning light off

      		 -

      Chassis > ABS/VSC/TRC > Active Test
      Active Test Display
      ABS Warning Light
      Data List Display
      ABS Warning Light

    2. Check the operating condition of the ABS warning light when operating it using the GTS.

      Result
      Result Proceed to
      ABS warning light in the Data List does not change using the Active Test A
      ABS warning light in the Data List turns ON/OFF using the Active Test B

    A

    REPLACE BRAKE ACTUATOR ASSEMBLY for LHD: Click here
    REPLACE BRAKE ACTUATOR ASSEMBLY for RHD: Click here

    B

  3. INSPECT COMBINATION METER ASSEMBLY


    1. Enter the following menus: Body Electrical / Combination Meter / Active Test.

    2. Perform the Active Test of the combination meter assembly using the GTS.


      Body Electrical > Combination Meter > Active Test
      Tester Display
      ABS Warning

    3. Check the combination meter assembly.

      OK
      The ABS warning light turns on or off in accordance with GTS operation.
      Result
      Proceed to
      OK
      NG

    OK

    REPLACE BRAKE ACTUATOR ASSEMBLY for LHD: Click here
    REPLACE BRAKE ACTUATOR ASSEMBLY for RHD: Click here

    NG

    INSPECT METER / GAUGE SYSTEM Click here