September 30: LEMON manuals is back up on a temporary server! Slowness is possible

Test M: Restraints Control Module (RCM) Ground Circuit Open (DTC B1921): Notes

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

NOTE: Before proceeding, see AIR BAG SAFETY PRECAUTIONS .