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Test P: LFC 52/DTC B2439 - Passenger Safety Belt Buckle Switch Circuit Resistance Out of Range
PINPOINT TEST P: LFC 52/DTC B2439 - PASSENGER SAFETY BELT BUCKLE SWITCH CIRCUIT RESISTANCE OUT OF RANGENormal Operation
As part of the supplemental restraint system (SRS), the safety belt buckles are equipped with Hall-effect switches. The safety belt buckle switches indicate to the restraints control module (RCM) whether the safety belts are buckled or unbuckled.
The RCM checks the passenger safety belt buckle switch circuits for faults. If the RCM detects a current out-of-range fault, it will store DTC B2439 in memory and flash LFC 52 (or higher priority code if one exists) on the air bag warning indicator.
- DTC B2439 Passengers Seat Belt Buckle Switch Resistance Out of Range - If the RCM detects a current out of range between buckled and unbuckled on the passenger safety belt buckle switch, it will set this DTC.
This pinpoint test is intended to diagnose the following:
- Passenger safety belt buckle switch
- RCM
