Test Q: LFC 52/DTC B2438 - Passenger Seat Belt Buckle Switch Short to Ground

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Normal Operation
The Restraints Control Module (RCM) checks the passenger seat belt buckle switch circuits for faults. If the RCM detects a short to ground fault, it will store Diagnostic Trouble Code (DTC) B2438 in memory and flash Lamp Fault Code (LFC) 52 (or higher priority code if one exists) on the air bag indicator.

Possible Causes
A passenger seat belt buckle switch open circuit fault can be caused by:
^ Wiring, terminals, or connectors.
^ A faulty passenger seat belt buckle switch.
^ A faulty RCM.