AUDIO AND VISUAL SYSTEM (w/o Multi-display) HOW TO PROCEED WITH TROUBLESHOOTING

Tech Tips

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


  1. VEHICLE BROUGHT TO WORKSHOP


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  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

    NEXT

  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 before proceeding to the next step.


      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. BASIC INSPECTION


    1. Turn the engine switch on (IG).

    2. Check whether or not the radio receiver assembly turns on.

      Result
      Result Proceed to
      Radio receiver assembly turns on A
      Radio receiver assembly does not turn on B

      B

      Go to step 8
      A

  6. CHECK FOR DTC

    Tech Tips

    Refer to DTC Check/Clear Click here.


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

    2. Clear the DTCs.

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

      Tech Tips


      • If the system cannot enter diagnostic mode, inspect the AVC-LAN and all the components that connect to the AVC-LAN for short circuits and repair or replace the malfunctioning part.

      • Even if the symptom malfunction is not confirmed, check the DTCs. This is because the system stores past DTCs.

      • Check and clear past DTCs. Then recheck for DTCs.

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

      B

      Go to step 8
      A

  7. DIAGNOSTIC TROUBLE CODE CHART


    1. Find the output code in Diagnostic Trouble Code Chart Click here.


      NEXT

      Go to step 10

  8. 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

      B

      Go to step 10
      A

  9. PERFORM TROUBLESHOOTING BASED ON MALFUNCTION SYMPTOM


    1. Refer to Terminals of ECU Click here.


      NEXT

  10. ADJUST, REPAIR OR REPLACE


    NEXT

  11. CONFIRMATION TEST


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    END