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HOMESERVICE MANUALSTOYOTA2020RAV4 XLE, AWDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT VARIANT/TRIMSECTION 5 (POWER BACK DOOR SYSTEM (HV) - DIAGNOSTICS - INTRODUCTION)POWER BACK DOOR SYSTEM (FOR HV MODEL)HOW TO PROCEED WITH TROUBLESHOOTING [11/2018 - 10/2023]PROCEDURE
2020 Toyota RAV4 XLE, AWD

How To Proceed With Troubleshooting [11/2018 - 10/2023]: Procedure

2020 Toyota RAV4 XLE, AWDSECTION Procedure
WARNING: This page is about a different variant/trim than selected.
  1. VEHICLE BROUGHT TO WORKSHOP 

    Result

    Proceed to
    NEXT

    Result: 

    NEXT 

    See step  2

  2. CUSTOMER PROBLEM ANALYSIS AND SYMPTOM CHECK 

    Result

    Proceed to
    NEXT

    Result: 

    NEXT 

    See step  3

  3. READ AND SAVE OPERATION HISTORY 
    NOTE:
    • If the vehicle or vehicle controls are operated (for example, during initial inspection when the vehicle is brought in for repair) before operation history has been read out and saved, the operation history information could be lost.
    • The function "Read operation history" uses the current system time setting inside the Techstream and the time counter inside the controlling ECU to calculate the timings shown in the operation history. For this reason, before reading out the operation history, first make sure that the Techstream system clock is accurately set to the current time.
    1. Read and save operation history using the Techstream.

      Refer to CHECK FOR INTERMITTENT PROBLEMS [11/2018 - 10/2023] 

      Body Electrical > Main Body > Utility 

      Tester Display
      Operation History
      BODY ELECTRICAL > BACK DOOR > UTILITY

      Tester Display
      Operation History

      Result

      Proceed to
      NEXT

    Result: 

    NEXT 

    See step  4

  4. INSPECT AUXILIARY BATTERY VOLTAGE 
    1. Measure the auxiliary battery voltage with the power switch off.

      Standard voltage

      11 to 14 V

      HINT: 

      • A simple method to determine whether the auxiliary battery is discharged is to operate the horn.
      • If the voltage is below 11 V, recharge or replace the auxiliary battery before proceeding.
    2. Check the fuses and relays.
    3. Check the connector connections and terminals to make sure that there are no abnormalities such as loose connections, deformation, etc.

      Result

      Proceed to
      NEXT

    Result: 

    NEXT 

    See step  5

  5. CHECK COMMUNICATION FUNCTION OF LIN COMMUNICATION SYSTEM* 
    1. Using the Techstream, check for LIN communication system DTCs.

      Refer to DTC CHECK / CLEAR [11/2018 - 10/2023]

      Result

      Result Proceed to
      LIN DTC is not output A
      LIN DTC is output B

    Result: 

    B 

    GO TO LIN COMMUNICATION SYSTEM. Refer to  DIAGNOSTIC TROUBLE CODE CHART [11/2018 - 12/2021]  , or refer to  DIAGNOSTIC TROUBLE CODE CHART [12/2021 - 10/2023] 

    Result: 

    A 

    See step  6

  6. CHECK COMMUNICATION FUNCTION OF CAN COMMUNICATION SYSTEM* 
    1. Use the Techstream to check if the CAN communication system is functioning normally.

      Refer to HOW TO PROCEED WITH TROUBLESHOOTING [11/2018 - 02/2019] , or refer to HOW TO PROCEED WITH TROUBLESHOOTING [02/2019 - ]

      Result

      Result Proceed to
      CAN DTC is not output A
      CAN DTC is output B

    Result: 

    B 

    GO TO CAN COMMUNICATION SYSTEM. Refer to  HOW TO PROCEED WITH TROUBLESHOOTING [11/2018 - 02/2019]  , or refer to  HOW TO PROCEED WITH TROUBLESHOOTING [02/2019 - ] 

    Result: 

    A 

    See step  7

  7. CHECK FOR DTC* 
    1. Check for DTCs.

      Refer to DTC CHECK / CLEAR [11/2018 - 10/2023] 

      Body Electrical > Back Door > Trouble Codes 

    2. Clear the DTCs.

      Refer to DTC CHECK / CLEAR [11/2018 - 10/2023] 

      Body Electrical > Back Door > Clear DTCs 

    3. Recheck for DTCs.

      Refer to DTC CHECK / CLEAR [11/2018 - 10/2023] 

      Body Electrical > Back Door > Trouble Codes 

      Result

      Result Proceed to
      DTC is not output A
      DTC is output B

    Result: 

    B 

    GO TO DIAGNOSTIC TROUBLE CODE CHART. Refer to  DIAGNOSTIC TROUBLE CODE CHART [11/2018 - 10/2023]  

    Result: 

    A 

    See step  8

  8. PROBLEM SYMPTOMS TABLE 
    1. Refer to Problem Symptoms Table.

      Refer to PROBLEM SYMPTOMS TABLE [11/2018 - 10/2023] 

      Result

      Result Proceed to
      Fault is not listed in Problem Symptoms Table A
      Fault is listed in Problem Symptoms Table B

    Result: 

    B 

    ADJUST, REPAIR OR REPLACE IN ACCORDANCE WITH PROBLEM SYMPTOMS TABLE 

    Result: 

    A 

    See step  9

  9. OVERALL ANALYSIS AND TROUBLESHOOTING* 
    1. Operation Check

      Refer to OPERATION CHECK [11/2018 - 10/2023] 

    2. Terminals of ECU

      Refer to TERMINALS OF ECU [11/2018 - 10/2023] 

    3. Data List / Active Test

      Refer to DATA LIST / ACTIVE TEST [11/2018 - 10/2023] 

      Result

      Proceed to
      NEXT

    Result: 

    NEXT 

    See step  10

  10. ADJUST, REPAIR OR REPLACE 
    1. Check whether the replacement, removal and installation of the multiplex network door ECU or disconnection of the connectors of the multiplex network door ECU, the disconnection of the cable of the negative (-) auxiliary battery terminal with the back door open, or the removal and installation or replacement of the power source system fuses has been performed.

      Result

      Result Proceed to
      The replacement, removal and installation of the multiplex network door ECU or disconnection of the connectors of the multiplex network door ECU, the disconnection of the cable of the negative (-) auxiliary battery terminal with the back door open, or the removal and installation or replacement of the power source system fuses has been performed. A
      The replacement, removal and installation of the multiplex network door ECU or disconnection of the connectors of the multiplex network door ECU, the disconnection of the cable of the negative (-) auxiliary battery terminal with the back door open, or the removal and installation or replacement of the power source system fuses has not been performed. B

    Result: 

    B 

    See step  12

    Result: 

    A 

    See step  11

  11. INITIALIZE POWER BACK DOOR SYSTEM 
    1. Initialize the power back door system.

      Refer to INITIALIZATION [11/2018 - 10/2023] 

      Result

      Proceed to
      NEXT

    Result: 

    NEXT 

    See step  12

  12. CONFIRMATION TEST 

    Result

    Proceed to
    NEXT

    Result: 

    NEXT 

    END 

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.