Section 217 (Supplemental Inflatable Restraint System): Diagnostics: Self-Diagnostics

WARNING: This page is about a different car, the 2004 Ford Mustang. However, it is still accessible from the selected car via links, so may be relevant.

During vehicle operation, Restraints Control Module (RCM) detects and stores both intermittent and hard fault codes. Diagnostic Trouble Codes (DTCs) can be retrieved with scan tool using RETRIEVE/CLEAR CONTINUOUS CODES option. If no DTCs are present, scan tool will display SYSTEM PASSED message. Once a DTC is logged into memory, it will stay in memory until 128 ignition cycles have been recorded or until scan tool is used to erase the DTC.

The on-demand self-test can be used to verify there are no electrical faults in air bag system. During this test, RCM will check each electrical component in system. If fault is detected, DTC is displayed on scan tool. Faults detected during self-test are not stored in memory unless same fault was detected during normal vehicle operation. Self-test should always be run after service to verify repair.