Test P: LFC 36/DTC B1993 - L Side Air Bag CKT Short to Ground

P1:

P2:

P3:

P4:

P5:

P5 - P6:

Normal Operation
The Restraints Control Module (RCM) monitors the resistance to ground at RCM C2041b pins 2 and 3. If the resistance is less than 1000 ohms at either pin, the RCM will interpret that as a ground short, store Diagnostic Trouble Code (DTC) B1993 and flash Lamp Fault Code (LFC) 36.

Possible Causes
A driver seat side air bag circuit short to ground can be caused by:
^ grounded wiring on circuit 1257 (WH/LB).
^ damaged wiring on circuit 1258 (BN/LB).
^ ground short in the driver seat side air bag module.
^ a faulted RCM.