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Test V

PINPOINT TEST V: LFC 37/DTC B1998 - PASSENGER SIDE AIR BAG CIRCUIT RESISTANCE HIGH


Test V1:






Test V2-V3:






Test V4-V6:






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 greater than 3.6 ohms, the RCM will store diagnostic trouble code (DTC) B1998 and flash lamp fault code (LFC) 37.

Possible Causes
A high 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.