Operation CHARM: Car repair manuals for everyone.

Test I: DTC B2438 - Passengers Seat Belt Buckle Switch Short to Ground

PINPOINT TEST I: DTC B2438 - PASSENGERS SEAT BELT BUCKLE SWITCH SHORT TO GROUND


I1-I2:






I2-I4:






I5-I6:






Normal Operation
The restraints control module (RCM) monitors the passenger safety 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 illuminate the air bag warning indicator.

Possible Causes
A passenger safety belt buckle switch short to ground fault can be caused by:
- damaged wiring, terminals or connectors.
- a faulty passenger safety belt buckle assembly.
- RCM is faulted.