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Slip Indicator Light Remains ON [08/2013 - ]: Procedure

WARNING: This page is about a different car, the 2014 Lexus ES 300h. However, it is still accessible from the selected car via links, so may be relevant.
  1. CHECK CAN COMMUNICATION SYSTEM 
    1. Check if CAN communication system DTCs are output. Refer to DIAGNOSIS SYSTEM [08/2013 - ] .

      Result

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

    B → See step   6 

    A: Go to next step 

  2. CHECK IF BRAKE BOOSTER WITH MASTER CYLINDER ASSEMBLY CONNECTOR IS SECURELY CONNECTED 
    1. Check if the skid control ECU (brake booster with master cylinder assembly) connector is securely connected.

      OK

      The connector is securely connected.

    NG → CONNECT CONNECTOR TO BRAKE BOOSTER WITH MASTER CYLINDER ASSEMBLY CORRECTLY 

    OK: Go to next step 

  3. CHECK AUXILIARY BATTERY 
    1. Check the auxiliary battery voltage.

      Standard Voltage

      Tester Connection Condition Specified Condition
      Auxiliary battery Power switch on (IG) 11 to 14 V
      Auxiliary battery Power switch on (READY) 11 to 15.5 V

    NG → CHARGE OR REPLACE AUXILIARY BATTERY 

    OK: Go to next step 

  4. INSPECT COMBINATION METER ASSEMBLY 
    1. Perform the Active Test of the combination meter assembly (meter CPU) using the Techstream. Refer to DATA LIST / ACTIVE TEST [08/2013 - ] .
    2. Check the combination meter assembly.

      OK

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

      HINT: 

      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. Refer to PROBLEM SYMPTOMS TABLE [08/2013 - ] .

    NG → See step   7 

    OK → See step   5 

  5. REPLACE BRAKE BOOSTER WITH MASTER CYLINDER ASSEMBLY. Refer to  REMOVAL [08/2013 - ] 
  6. INSPECT CAN COMMUNICATION SYSTEM. Refer to  HOW TO PROCEED WITH TROUBLESHOOTING [08/2013 - ] 
  7. REPLACE COMBINATION METER ASSEMBLY. Refer to  REMOVAL [08/2013 - ]