AUDIO AND VISUAL SYSTEM (for Radio and Display Type) 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 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 with the ignition switch off.

      Standard voltage
      11 to 14 V

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


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

      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 less, or 65°C (149°F) or higher.


      NG

      SET CABIN TO APPROPRIATE TEMPERATURE
      OK

  5. CHECK CAN COMMUNICATION SYSTEM*


    1. Check for DTC output.


      Result
      Result Proceed to
      CAN DTCs are not output A
      CAN DTCs are output (for LHD with Entry and Start System) B
      CAN DTCs are output (for LHD without Entry and Start System) C
      CAN DTCs are output (for RHD with Entry and Start System) D
      CAN DTCs are output (for RHD without Entry and Start System) E

      B

      GO TO CAN COMMUNICATION SYSTEM Click here

      C

      GO TO CAN COMMUNICATION SYSTEM Click here

      D

      GO TO CAN COMMUNICATION SYSTEM Click here

      E

      GO TO CAN COMMUNICATION SYSTEM Click here

      A

  6. DTC CLEAR*


    1. Refer to DTC Check/Clear Click here.

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

      NEXT

  7. RECHECK FOR DTC*


    1. Refer to DTC Check/Clear Click here.

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

      Tech Tips


      • Even if the malfunction symptom is not confirmed, check for diagnostic trouble codes. This is because the system stores past diagnostic trouble codes.

      • After the check using the GTS, check the "System Check Mode" screen as necessary.

      • Check the diagnostic trouble code and inspect the area code indicates.


      B

      Go to step 9
      A

  8. DIAGNOSTIC TROUBLE CODE CHART


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

      Note


      • The audio and visual system outputs DTCs for the following systems.

      • When DTCs other than the codes in Diagnostic Trouble Code Chart for the audio and visual system are output, refer to Diagnostic Trouble Code Chart for the following systems.

      Result
      Result Proceed to
      DTCs for the Audio and Visual System (w/ Radio and Display Type) are output A
      DTCs for the Rear View Monitor System (w/ Radio and Display Type) are output B
      DTCs for the Rear Seat Entertainment System are output C

      A

      GO TO STEP 11
      B

      GO TO REAR VIEW MONITOR SYSTEM Click here

      C

      GO TO REAR SEAT ENTERTAINMENT SYSTEM Click here

  9. 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 symptom does not recur and no DTC is output, perform the symptom reproduction method Click here.


      B

      Go to step 11
      A

  10. CHECK ECU TERMINAL ARRANGEMENT BASED ON MALFUNCTION SYMPTOM


    1. Refer to Terminals of ECU Click here.


      NEXT

  11. CHECK CIRCUIT


    1. Adjust, repair or replace as necessary.


      NEXT

  12. RECHECK FOR DIAGNOSTIC TROUBLE CODE

    Tech Tips

    After clearing DTCs, recheck for DTCs.


    NEXT

  13. PERFORM CONFIRMATION TEST


    NEXT
    END