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Home >> Lexus >> 2017 >> GX 460 Base >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Entertainment Systems >> Audio / Video System (Without Navigation System) (Diagnostics - Introduction) >> AUDIO AND VISUAL SYSTEM (w/o Navigation System) >> How To Proceed With Troubleshooting [08/2019 - 08/2021] >> Procedure

How To Proceed With Troubleshooting [08/2019 - 08/2021]: Procedure

  1. VEHICLE BROUGHT TO WORKSHOP 

    Result

    Proceed to
    NEXT

    Result: 

    NEXT 

    See step  2

  2. CUSTOMER PROBLEM ANALYSIS 
    • When troubleshooting, confirm that the problem symptoms have been accurately identified. Preconceptions should be discarded in order to make an accurate judgment. To clearly understand what the problem symptoms are, it is extremely important to ask the customer about the problem and the conditions at the time the malfunction occurred.
    • Gather as much information as possible for reference. Past problems that seem unrelated may also help in some cases.
    • The following 5 items are important points in problem analysis:
      What Vehicle model, system name
      When Date, time, occurrence frequency
      Where Road conditions
      Under what conditions? Driving conditions, weather conditions
      How did it happen? Problem symptoms

    Result

    Proceed to
    NEXT

    Result: 

    NEXT 

    See step  3

  3. INSPECT BATTERY VOLTAGE 
    1. Measure the battery voltage.

      Standard voltage

      11 to 14 V

      If the voltage is below 11 V, recharge or replace the battery.

      Result

      Proceed to
      NEXT

    Result: 

    NEXT 

    See step  4

  4. CHECK CABIN 
    1. Check that condensation is not likely to occur in the cabin, and that the temperature is not high or extremely low in the cabin.

      OK

      Condensation is not likely being produced and the temperature is not high or extremely low.

      HINT: 

      • A humid cabin and a rapid change in temperature may lead to condensation. Condensation in the cabin may cause a short circuit.
      • The audio and visual system may not operate normally when the temperature is -20°C (-4°F) or less, or 65°C (149°F) or higher.

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    SET CABIN TO APPROPRIATE TEMPERATURE 

    Result: 

    OK 

    See step  5

  5. CHECK CAN COMMUNICATION SYSTEM* 
    1. Check for DTC output.

      Refer to HOW TO PROCEED WITH TROUBLESHOOTING [08/2019 - ]

      Result

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

    Result: 

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

    Result: 

    See step  6

  6. CHECK FOR DTC* 
    1. Refer to DTC Check/Clear.

      Refer to DTC CHECK / CLEAR [08/2019 - 08/2020] , or refer to DTC CHECK / CLEAR [08/2020 - 08/2021] 

      Result

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

    Result: 

    See step  10

    Result: 

    See step  7

  7. DIAGNOSTIC TROUBLE CODE CHART 
    1. *: w/ Manual (SOS) Switch
    1. Find the output code in Diagnostic Trouble Code Chart.

      Refer to DIAGNOSTIC TROUBLE CODE CHART [08/2019 - 08/2021] 

      NOTE:
      • The audio and visual system (w/o navigation system) outputs DTCs for the following system.
      • When DTCs other than those in Diagnostic Trouble Code Chart for the audio and visual system (w/o navigation system) are output, refer to Diagnostic Trouble Code Chart for the relevant system.
      • Refer to Safety Connect System*

        Refer to DIAGNOSTIC TROUBLE CODE CHART [08/2019 - 08/2021]

      Result

      Result Proceed to
      DTCs for the safety connect system are output.* A
      DTCs for the audio and visual system (w/o Navigation System) are output. B

    Result: 

    GO TO SAFETY CONNECT SYSTEM. Refer to  HOW TO PROCEED WITH TROUBLESHOOTING [08/2018 - 08/2021] 

    Result: 

    See step  8

  8. PROBLEM SYMPTOMS TABLE 
    1. Refer to the 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: 

    ADJUST, REPAIR OR REPLACE IN ACCORDANCE WITH PROBLEM SYMPTOMS TABLE 

    Result: 

    See step  9

  9. PERFORM TROUBLESHOOTING BASED ON MALFUNCTION SYMPTOM 
    1. Terminals of ECU

      Refer to TERMINALS OF ECU [08/2019 - 08/2020] , or refer to TERMINALS OF ECU [08/2020 - 08/2021] 

    2. Data List/Active Test*

      Refer to DATA LIST / ACTIVE TEST [08/2015 - 08/2020] , or refer to DATA LIST / ACTIVE TEST [08/2020 - 08/2021] 

      Result

      Proceed to
      NEXT

    Result: 

    NEXT 

    See step  10

  10. ADJUST, REPAIR OR REPLACE 
    1. Adjust, repair or replace as necessary.

      Result

      Proceed to
      NEXT

    Result: 

    NEXT 

    See step  11

  11. RECHECK FOR DIAGNOSTIC TROUBLE CODE* 

    HINT: 

    After clearing DTCs, recheck for DTCs.

    Refer to DTC CHECK / CLEAR [08/2019 - 08/2020] , or refer to DTC CHECK / CLEAR [08/2020 - 08/2021] 

    Result

    Proceed to
    NEXT

    Result: 

    NEXT 

    See step  12

  12. CONFIRMATION TEST 

    Result

    Proceed to
    NEXT

    Result: 

    NEXT 

    END