DSD Information System
Home >> Toyota >> 2021 >> Highlander LE, 4WD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 37 (Electronically Controlled Brake System (HV) - Diagnostic Codes (08 Of 11)) >> ELECTRONICALLY CONTROLLED BRAKE SYSTEM (for HV Model) >> DTC C13B9-51: SM Valve Learning Not Programmed; DTC C13B9-54: SM Valve Learning Missing Calibration [12/2019 - ] >> Procedure

DTC C13B9-51: SM Valve Learning Not Programmed; DTC C13B9-54: SM Valve Learning Missing Calibration [12/2019 - ]: Procedure

WARNING: This page is about a different variant/trim than selected.
  1. CHECK DTC 
    1. Check that no DTCs other than those related to incomplete learning are output.

      Chassis > Brake Booster > Trouble Codes 

      Chassis > Brake/EPB > Trouble Codes 

      OK

      DTCs other than those related to incomplete learning are not output.

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    REPAIR CIRCUITS INDICATED BY OUTPUT DTCS. Refer to  DIAGNOSTIC TROUBLE CODE CHART [12/2019 - 10/2021]  , or refer to  DIAGNOSTIC TROUBLE CODE CHART [10/2021 - 11/2023]  , or refer to  DIAGNOSTIC TROUBLE CODE CHART [11/2023 - ] 

    Result: 

    OK 

    See step  2

  2. CHECK FOR FLUID LEAK 
    1. Inspect the following items for brake fluid leaks:
      • The brake lines from the brake booster with master cylinder assembly to each wheel cylinder.
      • The main body of the brake booster with master cylinder assembly and brake actuator assembly.

      OK

      There are no fluid leaks.

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    REPAIR OR REPLACE APPLICABLE PART 

    Result: 

    OK 

    See step  3

  3. PERFORM AIR BLEEDING 
    1. Perform the air bleeding procedure in Bleed Brake System.

      Refer to BLEEDING [12/2019 - ]

      Result

      Proceed to
      NEXT

    Result: 

    NEXT 

    See step  4

  4. PERFORM SM SOLENOID VALVE OFFSET LEARNING 
    1. Check that the conditions required for SM solenoid valve offset learning are met and perform SM solenoid valve offset learning.

      Refer to UTILITY [12/2019 - 11/2023] , or refer to UTILITY [11/2023 - ]

      NOTE:

      If DTC C13B9-54 is output, wait 4 minutes or more with the ignition switch turned off, then perform learning after turning the ignition switch to ON and clearing the DTCs.

      Chassis > Brake/EPB > Utility 

      Tester Display
      Calibration
      1. The auxiliary battery voltage is 11 to 15.5 V when the ignition switch is turned ON (READY).
      2. The brake actuator assembly is not hot.
      3. The hybrid control system is not malfunctioning.
      4. The shift state indicator shows that the shift lever is in P.
      5. The READY light in the combination meter assembly is illuminated.
      6. The brake pedal is not depressed.
      7. The parking brake is released.
      8. DTCs C1345-00 or C1345-51 is not output.

      Result

      Proceed to
      NEXT

    Result: 

    NEXT 

    See step  5

  5. CLEAR DTC 
    1. Clear the DTCs.

      Chassis > Brake/EPB > Clear DTCs 

    2. Turn the ignition switch off.

      Result

      Proceed to
      NEXT

    Result: 

    NEXT 

    See step  6

  6. RECONFIRM DTC 
    1. Based on the Freeze Frame Data and interview with the customer, attempt to reproduce the conditions when the malfunction occurred.
    2. Check if the same DTC is output.

      Chassis > Brake/EPB > Trouble Codes 

      Result

      Result Proceed to
      DTCs C13B9-51 and C13B9-54 are not output. A
      DTCs C13B9-51 and/or C13B9-54 are output. B

    Result: 

    A 

    USE SIMULATION METHOD TO CHECK. Refer to  HOW TO PROCEED WITH TROUBLESHOOTING [12/2019 - ] 

    Result: 

    B 

    REPLACE BRAKE ACTUATOR ASSEMBLY. Refer to  REMOVAL [12/2019 - 10/2022]  , or refer to  REMOVAL [10/2022 - 11/2023]  , or refer to  REMOVAL [11/2023 - ] 

Diesel-Data.com