GS 350 AWD V6-3.5L (2GR-FSE) (2009)
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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.
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Gather as much information as possible for reference. Past problems that seem unrelated may also help in some cases.
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The 5 following questions are important points in the problem analysis:
3. SYMPTOM CONFIRMATION AND DIAGNOSTIC TROUBLE CODE
HINT: The diagnostic system in the LEXUS GS460/350 has various functions.
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The first function is the Diagnostic Trouble Code (DTC) check. A DTC is a code stored in the ECU memory whenever a malfunction in
the signal circuits to the ECU occurs. In a DTC check, a previous malfunction's DTC can be checked by a technician during
troubleshooting.
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Another function is the Input Signal Check, which checks if the signals from various switches are sent to the ECU correctly.
By using these functions, the problem areas can be narrowed down and troubleshooting is more effective. Diagnostic functions are
incorporated in the following system in the LEXUS GS460/350.
