B1921 LINCOLN – RCM Bracket Ground Resistance High

B1921 LINCOLN Possible Symptoms

Air Bag Warning Light ON

B1921 LINCOLN Possible Causes

Faulty Restraint Control Module (RCM),Restraint Control Module (RCM) harness is open or shorted,Restraint Control Module (RCM) circuit poor electrical connection

B1921 LINCOLN Description

The Restraint Control Module (RCM) monitors resistance between ground connections at its housing and reference ground at RCM connector. If RCM detects resistance more than 100 ohms, it stores Diagnostic Trouble Code (DTC) B1921 in memory and flashes on AIR BAG warning light.