Test T

PINPOINT TEST T: DTC B2437 - PASSENGER SAFETY BELT BUCKLE SWITCH CIRCUIT SHORT TO BATTERY

Lamp Fault Codes (LFCs)







The lamp fault code (LFC) indicates the specific fault associated with diagnostic trouble code (DTC) B2437.

Test T1:

Test T2:

Test T2-T4:

Test T5:

Test T6:

Normal Operation
As part of the SRS, the safety belt buckles are equipped with Hall-effect switches. The safety belt switches indicate to the RCM whether the safety belts are buckled or unbuckled.

The restraints control module (RCM) checks the passenger safety belt buckle switch circuits for faults. If the RCM detects a short to voltage fault, it will store diagnostic trouble code (DTC) B2437 in memory and flash lamp fault code (LFC) 7-10 on the air bag indicator.

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