Diagnosis & Testing: Self-Diagnostics
WARNING: This page is about a different car, the 1996 Ford Ranger and 1996 Ford Explorer. However, it is still accessible from the selected car via links, so may be relevant.
During vehicle operation, air bag diagnostic monitor detects and stores both intermittent and hard failure codes in non-volatile memory. The DTCs can be retrieved with the New Generation Star (NGS) tester using the retrieve/clear continuous codes option. If no DTCs are present, NGS Tester will display SYSTEM PASSED message. Once a fault code is logged in air bag diagnostic monitor memory, it will stay in memory until 80 ignition cycles have been recorded or until NGS is used to erase the DTCs.