AB: LFC 37/DTC B1998 - Pass. Side Air Bag Ckt Resistance High

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.

Pinpoint Test Steps:

AB1 - AB2:

AB3 - AB4:

AB5:

AB6 - AB7:

AB8: