AUDIO AND VISUAL SYSTEM (for Radio Receiver Type) HOW TO PROCEED WITH TROUBLESHOOTING

Tech Tips

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

  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.

      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. 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 5
      A

  6. PERFORM TROUBLESHOOTING BASED ON MALFUNCTION SYMPTOM

    1. Refer to Terminals of ECU Click here.

      NEXT

  7. ADJUST, REPAIR OR REPLACE

    NEXT

  8. CONFIRMATION TEST

    NEXT
    END