LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Toyota >> 2021 >> Sequoia TRD Pro >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Anti-Theft Systems >> Wireless Door Lock Control System - Diagnostics - Introduction >> Wireless Door Lock Control System >> How To Proceed With Troubleshooting [08/2017 - 08/2019] >> Procedure
April 5, 2026: LEMON Manuals is launched! Read the announcement.

How To Proceed With Troubleshooting [08/2017 - 08/2019]: Procedure

  1. VEHICLE BROUGHT TO WORKSHOP 

    Result

    Proceed to
    NEXT

    Result: 

    NEXT 

    See step  2

  2. CUSTOMER PROBLEM ANALYSIS 
    1. Interview the customer to confirm the trouble.

      Refer to HOW TO PROCEED WITH TROUBLESHOOTING [08/2017 - 08/2018] , or refer to HOW TO PROCEED WITH TROUBLESHOOTING [08/2018 - 08/2019]

      Result

      Proceed to
      NEXT

    Result: 

    NEXT 

    See step  3

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

      Refer to DIAGNOSIS SYSTEM [08/2017 - 08/2018] , or refer to DIAGNOSIS SYSTEM [08/2018 - 08/2019]

      Result

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

    Result: 

    GO TO CAN COMMUNICATION SYSTEM. Refer to  HOW TO PROCEED WITH TROUBLESHOOTING [08/2017 - 08/2019] 

    Result: 

    See step  4

  4. SYMPTOM SIMULATION 

    Result

    Proceed to
    NEXT

    Result: 

    NEXT 

    See step  5

  5. PROBLEM SYMPTOMS TABLE 

    Result

    Result Proceed to
    Fault is not listed in problem symptoms table A
    Fault is listed in problem symptoms table B

    Result: 

    See step  8

    Result: 

    See step  6

  6. PERFORM TROUBLESHOOTING ACCORDING TO MALFUNCTION SYMPTOM* 
    1. Operation Check

      Refer to OPERATION CHECK [08/2017 - 08/2019] 

    2. Terminals of ECU

      Refer to TERMINALS OF ECU [08/2017 - 08/2019] 

    3. Data List/Active Test

      Refer to DATA LIST / ACTIVE TEST [08/2017 - 08/2019] 

      Result

      Proceed to
      NEXT

    Result: 

    NEXT 

    See step  7

  7. ADJUST, REPAIR OR REPLACE 

    Result

    Proceed to
    NEXT

    Result: 

    NEXT 

    See step  8

  8. CONFIRMATION TEST 

    Result

    Proceed to
    NEXT

    Result: 

    NEXT 

    END