Audio And Visual System How To Proceed With Troubleshooting

Body Electrical. Lexus Is250, Is220D. Gse20 Ale20
Audio Visual. Lexus Is250, Is220D. Gse20 Ale20

  1. VEHICLE BROUGHT TO WORKSHOP

  2. INSPECT BATTERY VOLTAGE

  3. BASIC INSPECTION

  4. CHECK FOR DTC

  5. DIAGNOSTIC TROUBLE CODE CHART

  6. PROBLEM SYMPTOMS TABLE

  7. OVERALL ANALYSIS AND TROUBLESHOOTING

  8. ADJUST, REPAIR OR REPLACE

  9. CONFIRMATION TEST

Audio And Visual System -- How To Proceed With Troubleshooting




1.VEHICLE BROUGHT TO WORKSHOP

    NEXT


    2.INSPECT BATTERY VOLTAGE
      Standard voltage:
      11 to 14 V
      1. If the voltage is below 11 V, recharge or replace the battery before proceeding.

    NEXT


    3.BASIC INSPECTION

    1. Turn the engine switch on (IG).

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

      Result:

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


    		B.
    Go to step 6
    A


    4.CHECK FOR DTC

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

    2. Delete the DTCs.

    3. Recheck by simulating the operation indicated by the DTC.

      HINT:
      1. If the system cannot enter the diagnosis mode, inspect the AVC-LAN and all the components that connect to the AVC-LAN for short circuits and repair or replace the problem part.
      2. Even if the malfunction symptom is not confirmed, check the DTCs. This is because the system stores past DTCs.
      3. Check and clear past DTCs. Then check for DTCs.

        Result:

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


    		B.
    Go to step 6
    A


    5.DIAGNOSTIC TROUBLE CODE CHART
      Find the output code on the diagnostic trouble code chart (Click here).

    NEXT

    Go to step 8


    6.PROBLEM SYMPTOMS TABLE
      Refer to the 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 8
    A


    7.OVERALL ANALYSIS AND TROUBLESHOOTING

    1. Terminals of ECU (Click here).


    NEXT


    8.ADJUST, REPAIR OR REPLACE

      NEXT


      9.CONFIRMATION TEST

        NEXT

        END