For Diagnostics
WARNING: This page is about a different car, the 2003 Toyota Tundra. However, it is still accessible from the selected car via links, so may be relevant.
Turn ignition switch to LOCK position. Disconnect and shield negative battery cable. Wait at least 90 seconds. Reconnect passenger-side air bag connector. Install driver-side air bag module. Reconnect right and left front air bag sensors. Reconnect right and left seat belt pretensioner connectors. Reconnect air bag sensor assembly connectors. Reconnect negative battery cable. Perform SYSTEM OPERATION CHECK .