IS 250 RWD V6-2.5L (4GR-FSE) (2007)
Part 2
HINT: Perform troubleshooting in accordance with the procedures. The given is an outline of basic troubleshooting procedures. Confirm the
troubleshooting procedures for the circuit you are working on before beginning troubleshooting.
Symptom Confirmation and Diagnostic Trouble Code
SYMPTOM CONFIRMATION AND DIAGNOSTIC TROUBLE CODE
HINT: The diagnostic system in the LEXUS IS250/350 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.