AUDIO AND VISUAL SYSTEM HOW TO PROCEED WITH TROUBLESHOOTING

Tech Tips


  • Use the following procedure to troubleshoot the audio and visual system.

  • *: Use the GTS.


  1. VEHICLE BROUGHT TO WORKSHOP


    NEXT

  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 for 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

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  3. INSPECT BATTERY VOLTAGE


    1. Measure the battery voltage with the engine switch off.

      Standard voltage
      11 to 14 V

      Tech Tips

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


      NEXT

  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.

      Tech Tips


      • 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 lower, or 65°C (149°F) or higher.


      NG

      SET CABIN TO APPROPRIATE TEMPERATURE
      OK

  5. CHECK CAN COMMUNICATION SYSTEM*


    1. Check if the CAN communication system is functioning normally.

      for LHD: Click here

      for RHD: Click here

      Result
      Result Proceed to
      CAN communication system is functioning normally. A
      CAN communication system is not functioning normally (for LHD). B
      CAN communication system is not functioning normally (for RHD). C

      B

      GO TO CAN COMMUNICATION SYSTEM Click here

      C

      GO TO CAN COMMUNICATION SYSTEM Click here

      A

  6. CHECK FOR DTC*


    1. Check for DTCs and note any codes that are output Click here.

    2. Clear the DTCs Click here.

    3. Recheck for DTCs by simulating the operation indicated by the DTCs Click here.

      OK
      DTC is not output.

      NG

      GO TO DIAGNOSTIC TROUBLE CODE CHART Click here

      OK

  7. PROBLEM SYMPTOMS TABLE


    1. Refer to Problem Symptoms Table Click here.

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

      Tech Tips

      If the symptoms do not recur and no DTCs are output, attempt to reproduce the symptoms.


      B

      ADJUST, REPAIR OR REPLACE IN ACCORDANCE WITH PROBLEM SYMPTOMS TABLE
      A

  8. PERFORM TROUBLESHOOTING BASED ON MALFUNCTION SYMPTOM*


    1. Terminals of ECU Click here

    2. Data List / Active Test Click here


      NEXT

  9. ADJUST, REPAIR OR REPLACE


    NEXT

  10. RECHECK FOR DTC*


    1. After clearing DTCs, recheck for DTCs Click here.


      NEXT

  11. PERFORM CONFIRMATION TEST


    NEXT
    END