Test N: Right Seat Belt Buckle Circuit Resistance Out Of Range (DTC B2439): Description
WARNING: This page is about a different car, the 2003 Mercury Sable and 2003 Ford Taurus. However, it is still accessible from the selected car via links, so may be relevant.
Restraints Control Module (RCM) checks right seat belt circuits for faults. If RCM detects a resistance out of range fault, it will store DTC B2439 in memory and flash Code 52 on AIR BAG warning light.