Normal Operation
WARNING: This page is about a different car, the 2009 Mercury Grand Marquis and 2009 Ford Crown Victoria. However, it is still accessible from the selected car via links, so may be relevant.
As part of the Supplemental Restraint System (SRS), the safety belt buckles are equipped with Hall-effect switches. The safety belt switches indicate to the Restraints Control Module (RCM) whether the safety belts are connected (switch closed) or disconnected (switch open). Refer to Air Bag and Safety Belt Pretensioner Supplemental Restraint System (SRS) .
The RCM checks the passenger safety belt buckle switch circuits for faults. If the RCM detects an open fault, it will store DTC B2436 in memory, flash LFC 5-2 on the air bag warning indicator.
- DTC B2436 Passenger Seat Belt Buckle Switch Circuit Open - If the RCM detects an open circuit on the passenger safety belt buckle switch, it will set this DTC.
This pinpoint test is intended to diagnose the following:
- Wiring, terminals or connectors
- Passenger safety belt buckle switch
- RCM