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Home >> Toyota >> 2018 >> Prius One >> Repair and Diagnosis >> External Pages >> Different car >> Section 415 (Electronically Controlled Brake System - Diagnostic Codes (P0571-U0074) & Symptom Tests (Except Hybrid)) >> ELECTRONICALLY CONTROLLED BRAKE SYSTEM (for Gasoline Model) >> Slip Indicator Light does not Come ON [04/2018 - 08/2021] >> Procedure

Slip Indicator Light does not Come ON [04/2018 - 08/2021]: Procedure

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  1. CHECK CAN COMMUNICATION SYSTEM 
    1. Check if CAN communication system DTCs are output.

      Refer to HOW TO PROCEED WITH TROUBLESHOOTING [04/2018 -]

      Result

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

    Result: 

    INSPECT CAN COMMUNICATION SYSTEM. Refer to  HOW TO PROCEED WITH TROUBLESHOOTING [04/2018 -] 

    Result: 

    See step  2

  2. PERFORM ACTIVE TEST USING TECHSTREAM (SLIP INDICATOR LIGHT) 
    1. Enter the following menus: Chassis / ABS/VSC/TRAC/EPB / Active Test.

      Chassis > ABS/VSC/TRAC/EPB > Active Test 

      Tester Display Measurement Item Control Range Diagnostic Note
      Slip Indicator Light Slip Indicator light Indicator light OFF/ON Observe combination meter assembly

      Chassis > ABS/VSC/TRAC/EPB > Data List 

      Tester Display Measurement Item Range Normal Condition Diagnostic Note
      Slip Indicator Light Slip indicator light ON or OFF ON: Indicator light on
      OFF: Indicator light off
      -

      Chassis > ABS/VSC/TRAC/EPB > Active Test 

      Active Test Display
      Slip Indicator Light
      Data List Display
      Slip Indicator Light
    2. Check the operating condition of the slip indicator light when operating it using the Techstream.

      Result

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

    Result: 

    REPLACE BRAKE ACTUATOR ASSEMBLY. Refer to  REMOVAL [04/2018 - 08/2020]  , or refer to  REMOVAL [08/2020 - 08/2021] 

    Result: 

    See step  3

  3. INSPECT COMBINATION METER ASSEMBLY 
    1. Enter the following menus: Body Electrical / Combination Meter / Active Test.
    2. Perform an Active Test of the combination meter assembly using the Techstream.

      Body Electrical > Combination Meter > Active Test 

      Tester Display
      Slip Warning
    3. Check the combination meter assembly.

      OK

      The slip indicator light turns on or off in accordance with Techstream operation.

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

    REPLACE BRAKE ACTUATOR ASSEMBLY. Refer to  REMOVAL [04/2018 - 08/2020]  , or refer to  REMOVAL [08/2020 - 08/2021] 

    Result: 

    NG 

    INSPECT METER / GAUGE SYSTEM. Refer to  HOW TO PROCEED WITH TROUBLESHOOTING [04/2018 -]