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Tests AA: LFC 37/DTC B1999 - Passenger Side Air Bag Circuit Resistance Low

AA1 - AA2:






AA3 - AA4:






AA5 - AA6:






Normal Operation
The Restraints Control Module (RCM) monitors the resistance of the passenger side air bag circuit loop and the air bag module igniter at RCM C1 pins 5 and 6. If the resistance is less than 1.4 ohms, the RCM will store Diagnostic Trouble Code (DTC) B1999 and flash Lamp Fault Code (LFC) 37.

Possible Causes
A low resistance on the passenger side air bag circuit can be caused by:
^ damaged wiring on circuit 30S-JA38 (RD/BK).
^ damaged wiring on circuit 31S-JA38 (BK/RD).
^ damaged passenger side air bag module.