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Tests AC: LFC 37/DTC B1999- Passenger Side Air Bag Circuit Resistance Low
AC1:
AC2:
AC3 - AC4:
AC5 - AC7:
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 1259 (WH/YE).
^ damaged wiring on circuit 1260 (BN/YE).
^ damaged passenger side air bag module.
^ damaged RCM.
^ damaged shorting bar or camming beam in C233 or C314.