RX400h · Service Manual BODY ELECTRICAL

HOW TO PROCEED WITH TROUBLESHOOTING

Troubleshooting


1.VEHICLE BROUGHT INTO A WORKSHOP
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    2.DIAGNOSTIC QUESTIONING AND SYMPTOM CONFIRMATION

    1. Ask the customer about symptoms and confirm malfunctions.


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    3.CHECK MULTIPLEX COMMUNICATION SYSTEM (BEAN)

    1. Use the intelligent tester to check for normal function of the body multiplex communication system.


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    4.CONFIRM THE SYSTEM NORMAL CONDITION

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      5.CHECK THE DIAGNOSTIC TROUBLE CODES

        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 for diagnostic trouble codes. This is because the system stores past diagnostic trouble codes.
        3. Refer to the detailed description on the diagnostic screen as necessary (Click here).
        4. Check and clear past diagnostic trouble codes. Check the diagnostic trouble code and inspect the area the code indicates.


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      6.DIAGNOSTIC TROUBLE CODE CHART

      1. Find the output code in the diagnostic trouble code chart.


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      7.PROBLEM SYMPTOMS TABLE

      1. Find the applicable symptom code in the problem symptoms table.

        HINT:
        If the symptom does not recur and no code is output, perform the symptom reproduction method (Click here).


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      8.CHECK THE ECU TERMINAL ARRANGEMENT BASED ON THE MALFUNCTION SYMPTOM
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        9.CHECK THE CIRCUIT

        1. Adjust, repair or replace as necessary.

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        10.RECHECK THE DIAGNOSTIC TROUBLE CODE

          HINT:
          After deleting the DTC, recheck for diagnostic trouble codes.

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        11.PERFORM CONFIRMATION TEST
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