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TROUBLESHOOTING HINTS
1. When Ignition switch is turned on, if AFS output voltage is not "0" (engine stops), inspect the
malfunction of AFS and ECU.
2. Even though AFS output voltage is abnormal, if engine is at idle ,inspect the following conditions.
(1) Chect the poor attachment of airflow, cut air duct, and air cleaner filter branched from AFS.
(2) Bad combustion in the cylinder or fault injector.
3. Even it no AFS malfunction occurs, check the mounting direction of AFS.
a. Use correct digital voltmeter.
b. Before inspection, warming up the engine till the engine coolant temperature is up to 80~90°C.
AFS HARNESS INSPECTION PROCEDURES
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