AUDIO AND VISUAL SYSTEM > HOW TO PROCEED WITH TROUBLESHOOTING

for Preparation Click here




1.VEHICLE BROUGHT TO WORKSHOP

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    2.INSPECT BATTERY VOLTAGE

      Standard voltage:
      11 to 14 V

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

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    3.INSPECT COMMUNICATION FUNCTION OF MULTIPLEX COMMUNICATION SYSTEM (BEAN)

    1. Using the intelligent tester, check if the Multiplex Communication System (MPX) is functioning normally.

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



    		B.
    Go to MULTIPLEX COMMUNICATION SYSTEM
    A


    4.BASIC INSPECTION

    1. Turn the ignition switch ON.

    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


    5.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 each AVC-LAN communication signal and repair or replace problem parts.
      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 7
    A


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

    NEXT

    Go to step 9


    7.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 9
    A


    8.OVERALL ANALYSIS AND TROUBLESHOOTING

    1. Terminals of ECU (Click here).


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    9.ADJUST, REPAIR OR REPLACE

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      10.CONFIRMATION TEST

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        END