System Operation Check
WARNING: This page is about a different car, the 1999 Ford RV Cutaway, 1999 Ford Econoline, 1999 Ford E450 Super Duty, and 1999 Ford Cutaway. However, it is still accessible from the selected car via links, so may be relevant.
- When checking air bag system operation (also known as prove out system), and upon completion of each diagnostic test, check for faults in air bag system. To check system, turn ignition switch to RUN position. If AIR BAG warning light illuminates for 4-8 seconds and then goes out, air bag system is functioning properly and no fault exist.
- If a fault is detected in air bag system during initial system check, AIR BAG warning light will either fail to light, stay on continuously, or flash a code sequence. If AIR BAG warning light flashes, indicating a fault in system, count number of flashes after fault code has cycled twice. Number of flashes represents a code number used to diagnose air bag system. See DIAGNOSIS & TESTING .
- If a system fault exists and AIR BAG warning light fails to light, an audible tone will be heard, indicating AIR BAG warning light is out and service is required.