Test U: DTC B2439 - Passengers Seat Belt Buckle Switch Circuit Resistance Out Of Range
PINPOINT TEST U: DTC B2439 - PASSENGERS SEAT BELT BUCKLE SWITCH CIRCUIT RESISTANCE OUT OF RANGELamp Fault Codes (LFCs)
The following LFC indicate the specific fault associated with DTC B2439:
Normal Operation
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 or disconnected.
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, flash LFC 7-6 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:
- Wiring, terminals or connectors
- Passenger safety belt buckle switch
- RCM
