Pinpoint Test Y: DTC B1921 - Air Bag Diagnostic Monitor Ground Circuit Open: Notes
WARNING:
The tightening torque of the restraints control module (RCM) retaining bolts is critical for correct air bag supplemental restraint system (SRS) operation. Refer to RESTRAINTS CONTROL MODULE (RCM) in this article for correct torque values.
NOTE:
A resistance difference as low as 25 ohms can set the DTC.