DSD Information System
Home >> Toyota >> 2021 >> Highlander LE, 4WD >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Drivers Assistance Systems - ADAS >> Intuitive Parking Assist System (W/ Parking Support Brake System) - Diagnostics - Introduction >> INTUITIVE PARKING ASSIST SYSTEM (w/ Parking Support Brake System) >> How To Proceed With Troubleshooting [12/2019 - 11/2023] >> Procedure

How To Proceed With Troubleshooting [12/2019 - 11/2023]: Procedure

  1. VEHICLE BROUGHT TO WORKSHOP 

    Result

    Proceed to
    NEXT

    Result: 

    NEXT 

    See step  2

  2. CUSTOMER PROBLEM ANALYSIS 

    Result

    Proceed to
    NEXT

    Result: 

    NEXT 

    See step  3

  3. INSPECT AUXILIARY BATTERY VOLTAGE 
    1. Measure the auxiliary battery voltage with the ignition switch off.

      Standard Voltage

      11 to 14 V

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

      Result

      Proceed to
      NEXT

    Result: 

    NEXT 

    See step  4

  4. CHECK CAN COMMUNICATION SYSTEM* 
    1. Use the GTS to check if the CAN communication system is functioning normally.
      1. for HV Model:

        Refer to DIAGNOSIS SYSTEM [12/2019 - 09/2020] , or refer to DIAGNOSIS SYSTEM [09/2020 - 10/2021] , or refer to DIAGNOSIS SYSTEM [10/2021 - 10/2022] , or refer to DIAGNOSIS SYSTEM [10/2022 - 11/2023]

      2. for Gasoline Model:

        Refer to DIAGNOSIS SYSTEM [12/2019 - 09/2020] , or refer to DIAGNOSIS SYSTEM [09/2020 - 10/2022] , or refer to DIAGNOSIS SYSTEM [10/2022 - 11/2023]

      Result

      Result Proceed to
      CAN communication system DTCs are not output A
      CAN communication system DTCs are output (for HV Model) B
      CAN communication system DTCs are output (for Gasoline Model) C

    Result: 

    GO TO CAN COMMUNICATION SYSTEM. Refer to  HOW TO PROCEED WITH TROUBLESHOOTING [12/2019 - 10/2022]  , or refer to  HOW TO PROCEED WITH TROUBLESHOOTING [10/2022 - 11/2023] 

    Result: 

    GO TO CAN COMMUNICATION SYSTEM. Refer to  HOW TO PROCEED WITH TROUBLESHOOTING [12/2019 - 10/2022]  , or refer to  HOW TO PROCEED WITH TROUBLESHOOTING [10/2022 - 11/2023] 

    Result: 

    See step  5

  5. SYSTEM CHECK 
    1. Check the vehicle specifications.

      Result

      Proceed to
      NEXT

    Result: 

    NEXT 

    See step  6

  6. CHECK BLIND SPOT MONITOR SYSTEM 
    1. Use the GTS to check if the blind spot monitor system is functioning normally.

      Result

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

    Result: 

    GO TO BLIND SPOT MONITOR SYSTEM. Refer to  HOW TO PROCEED WITH TROUBLESHOOTING [12/2019 - 11/2023] 

    Result: 

    See step  7

  7. PROBLEM SYMPTOM CONFIRMATION 

    Result

    Proceed to
    NEXT

    Result: 

    NEXT 

    See step  8

  8. CHECK DTC 
    1. Check for DTCs and note any codes that are output.

      Body Electrical > Clearance Warning > Trouble Codes 

    2. Clear the DTCs.

      Body Electrical > Clearance Warning > Clear DTCs 

    3. Check for DTCs.

      Body Electrical > Clearance Warning > Trouble Codes 

      Result

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

    Result: 

    See step  10

    Result: 

    See step  9

  9. DIAGNOSTIC TROUBLE CODE CHART (INTUITIVE PARKING ASSIST SYSTEM) 
    1. Refer to Diagnostic Trouble Code Chart.

      Refer to DIAGNOSTIC TROUBLE CODE CHART [12/2019 - 11/2023] 

      NOTE:
      1. The clearance warning ECU assembly outputs DTCs for the following system. When DTCs other than those in Diagnostic Trouble Code Chart for the parking support alert system are output, refer to Diagnostic Trouble Code Chart for the relevant systems.
        System Proceed to
        Parking Support Brake System Refer to DIAGNOSTIC TROUBLE CODE CHART [12/2019 - 11/2023]

      Result

      Proceed to
      NEXT

    Result: 

    NEXT 

    See step  14

  10. CHECK FOR VEHICLE CONTROL HISTORY* 

    HINT: 

    Refer to Vehicle Control History.

    Refer to VEHICLE CONTROL HISTORY [12/2019 - 10/2022] , or refer to VEHICLE CONTROL HISTORY [10/2022 - 11/2023]

    1. Check for vehicle control history and note any codes that are output.

      Body Electrical > Clearance Warning > Utility 

      Tester Display
      Vehicle Control History (RoB)

      Result

      Result Proceed to
      No vehicle control history is output (Problem symptom does not occur) A
      No vehicle control history is output (Problem symptom occurs) B
      X20C0 or X20C1 is output C
      Any vehicle control history other than X20C0 and X20C1 is output D

    Result: 

    See step  12

    Result: 

    GO TO CALIBRATION. Refer to  CALIBRATION [12/2019 - 11/2023] 

    Result: 

    GO TO VEHICLE CONTROL HISTORY. Refer to  VEHICLE CONTROL HISTORY [12/2019 - 10/2022]  , or refer to  VEHICLE CONTROL HISTORY [10/2022 - 11/2023] 

    Result: 

    See step  11

  11. SYMPTOM SIMULATION 
    1. Refer to Symptom Simulation.

      Refer to HOW TO PROCEED WITH TROUBLESHOOTING [12/2019 - ]

      Result

      Proceed to
      NEXT

    Result: 

    NEXT 

    See step  12

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

      Refer to PROBLEM SYMPTOMS TABLE [12/2019 - 10/2022] , or refer to PROBLEM SYMPTOMS TABLE [10/2022 - 11/2023] 

      Result

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

    Result: 

    See step  14

    Result: 

    See step  13

  13. OVERALL ANALYSIS AND TROUBLESHOOTING* 
    1. Terminals of ECU

      Refer to TERMINALS OF ECU [12/2019 - 11/2023] 

    2. Data List / Active Test

      Refer to DATA LIST / ACTIVE TEST [12/2019 - 11/2023] 

      Result

      Proceed to
      NEXT

    Result: 

    NEXT 

    See step  14

  14. CIRCUIT INSPECTION 

    Result

    Proceed to
    NEXT

    Result: 

    NEXT 

    See step  15

  15. IDENTIFICATION OF PROBLEM 

    Result

    Proceed to
    NEXT

    Result: 

    NEXT 

    See step  16

  16. REPAIR OR REPLACE 

    Result

    Proceed to
    NEXT

    Result: 

    NEXT 

    See step  17

  17. CONFIRMATION TEST 

    Result

    Proceed to
    NEXT

    Result: 

    NEXT 

    END