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Home >> Toyota >> 2021 >> RAV4 XLE, FWD >> Repair and Diagnosis >> Brakes >> Parking Brake System >> Electric Parking Brake System (W/O Vacuum Brake Booster) - Diagnostics - Introduction >> ELECTRIC PARKING BRAKE SYSTEM (w/o Vacuum Brake Booster) >> How To Proceed With Troubleshooting [02/2019 - 12/2021] >> Procedure

How To Proceed With Troubleshooting [02/2019 - 12/2021]: Procedure

  1. VEHICLE BROUGHT TO WORKSHOP 

    Result

    Proceed to
    NEXT

    Result: 

    NEXT 

    See step  2

  2. CUSTOMER PROBLEM ANALYSIS 
    1. Interview the customer and confirm the problem.

      Refer to HOW TO PROCEED WITH TROUBLESHOOTING [11/2018 - ]

      Result

      Proceed to
      NEXT

    Result: 

    NEXT 

    See step  3

  3. INSPECT AUXILIARY BATTERY VOLTAGE 

    Standard voltage

    11 to 14 V (Ignition switch off)

    1. If the voltage is below 11 V, recharge or replace the auxiliary battery before proceeding to the next step.

    Result

    Proceed to
    NEXT

    Result: 

    NEXT 

    See step  4

  4. CHECK DTC AND FREEZE FRAME DATA* 
    1. Check and record DTCs and Freeze Frame Data.

      for DTC Check / Clear: Refer to DTC CHECK / CLEAR [02/2019 - 12/2021] 

      for Freeze Frame Data: Refer to FREEZE FRAME DATA [02/2019 - 12/2021] 

      Chassis > Electric Parking Brake > Trouble Codes 

      1. Record the DTC and Freeze Frame Data.
    2. Clear the DTCs and Freeze Frame Data.

      for DTC Check / Clear: Refer to DTC CHECK / CLEAR [02/2019 - 12/2021] 

      Chassis > Electric Parking Brake > Clear DTCs 

    3. Reconfirm the DTCs.
      1. Reconfirm the DTCs based on the recorded DTCs and Freeze Frame Data.

        Chassis > Electric Parking Brake > Trouble Codes 

      2. Try to reproduce the problem symptoms based on the recorded DTCs and Freeze Frame Data, and then check if the DTCs are output again.

      Result

      Result Proceed to
      DTCs are not output and problem symptom can be confirmed and reproduced. A
      DTCs are not output. B
      DTCs are not output and problem symptom cannot be confirmed and reproduced. C

      HINT: 

    Result: 

    B 

    GO TO DIAGNOSTIC TROUBLE CODE CHART. Refer to  DIAGNOSTIC TROUBLE CODE CHART [02/2019 - 10/2019]  , or refer to  DIAGNOSTIC TROUBLE CODE CHART [10/2019 - 06/2020]  , or refer to  DIAGNOSTIC TROUBLE CODE CHART [06/2020 - 08/2020]  , or refer to  DIAGNOSTIC TROUBLE CODE CHART [08/2020 - 12/2021]  

    Result: 

    C 

    USE SIMULATION METHOD TO CHECK. Refer to  HOW TO PROCEED WITH TROUBLESHOOTING [11/2018 - ] 

    Result: 

    A 

    See step  5

  5. PROBLEM SYMPTOMS TABLE 
    1. Proceed to Problem Symptoms Table.

      Refer to PROBLEM SYMPTOMS TABLE [11/2018 - 12/2021] 

      Result

      Proceed to
      Fault is not listed in Problem Symptoms Table
      Fault is listed in Problem Symptoms Table

    Result: 

    Fault is listed in Problem Symptoms Table 

    See step  7

    Result: 

    Fault is not listed in Problem Symptoms Table 

    See step  6

  6. OVERALL ANALYSIS AND TROUBLESHOOTING* 
    1. Refer to Terminals of ECU.

      Refer to TERMINALS OF ECU [02/2019 - 12/2021] 

    2. Refer to Data List / Active Test.

      Refer to DATA LIST / ACTIVE TEST [02/2019 - 12/2021] 

      Result

      Proceed to
      NEXT

    Result: 

    NEXT 

    See step  7

  7. REPAIR OR REPLACEMENT 

    Result

    Proceed to
    NEXT

    Result: 

    NEXT 

    See step  8

  8. CONFIRMATION TEST 

    Result

    Proceed to
    NEXT

    Result: 

    NEXT 

    END