VEHICLE STABILITY CONTROL SYSTEM Downhill Assist Control Indicator 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 zero point calibration and store system information.

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PROCEDURE


  1. CHECK CAN COMMUNICATION SYSTEM


    1. Check if CAN communication system DTCs are output.

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      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 (DOWNHILL ASSIST CONTROL INDICATOR LIGHT)


    1. Connect the GTS to the DLC3.

    2. Turn the ignition switch to ON.

    3. Select the Active Test using the GTS.

      Click here


      Chassis > ABS/VSC/TRC > Active Test
      Tester Display Measurement Item Control Range Diagnostic Note
      Downhill Assist Control Light Downhill assist control indicator light Indicator light ON/OFF

      • Can be observed on the combination meter assembly

      • for AWD

      Chassis > ABS/VSC/TRC > Active Test
      Tester Display
      Downhill Assist Control Light

    4. Select the Data List on the GTS.

      Click here


      Chassis > ABS/VSC/TRC > Data List
      Tester Display Measurement Item Range Normal Condition Diagnostic Note
      Downhill Assist Control Light Downhill assist control indicator light ON or OFF

      ON: Indicator light on

      OFF: Indicator light off

      		 for AWD

      Chassis > ABS/VSC/TRC > Data List
      Tester Display
      Downhill Assist Control Light

    5. Check the operating condition of the downhill assist control indicator light when operating it using the GTS.

      Result
      Result Proceed to
      Downhill Assist Control Indicator Light in the Data List does not change using the Active Test. A
      Downhill Assist Control Indicator Light in the Data List turns ON/OFF using the Active Test. B

      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 parts.

      Click here


    A

    REPLACE BRAKE ACTUATOR ASSEMBLY Click here

    B

  3. INSPECT COMBINATION METER ASSEMBLY


    1. Turn the ignition switch off.

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

      Click here


      Body Electrical > Combination Meter > Active Test
      Tester Display
      Indicat. Downhill Assist Control

    3. Check the combination meter assembly.

      OK
      The downhill assist control indicator light turns on or off in accordance with the Active Test 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 before replacing parts.

      Click here

      Result
      Proceed to
      OK
      NG

    OK

    REPLACE BRAKE ACTUATOR ASSEMBLY Click here

    NG

    INSPECT METER / GAUGE SYSTEM Click here