System Operation Check
WARNING: This page is about a different car, the 2003 Lexus SC 430. However, it is still accessible from the selected car via links, so may be relevant.
Turn ignition switch to ON position. If AIR BAG warning light illuminates for about 6 seconds and then goes off, system is functioning properly. If AIR BAG warning light illuminates and stays illuminated (or flashes), Diagnostic Trouble Code (DTC) is stored in air bag sensor assembly. Go to RETRIEVING CODES . If AIR BAG warning light responds in any other way, go to DIAGNOSTIC TESTS .