Lexus IS250 · Service Manual BODY ELECTRICAL

HOW TO PROCEED WITH TROUBLESHOOTING

Troubleshooting


1.VEHICLE BROUGHT TO WORKSHOP
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    2.CUSTOMER PROBLEM ANALYSIS
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      3.CHECK AND CLEAR DTCs

      1. Refer to the diagnostic check/clear (Click here).

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      4.PROBLEM SYMPTOM CONFIRMATION

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        5.SYMPTOM SIMULATION
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          6.CHECK DTC

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            7.CHECK IF THE SAME SYMPTOM APPEARS IN THE NAVIGATION SYSTEM

            1. Refer to the navigation system (Click here).


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            8.PROBLEM SYMPTOMS TABLE

            1. Refer to the problem symptoms table (Click here).


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            9.BASED ON THE MALFUNCTION SYMPTOM, PERFORM TROUBLESHOOTING BELOW

            1. Terminals of ECU (Click here).

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            10.ADJUST, REPAIR, OR REPLACE
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              11.CONFIRMATION TEST
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