Test R

PINPOINT TEST R: LFC 51/DTC B2691 - DRIVER SAFETY BELT BUCKLE SWITCH CIRCUIT FAULT

Test R1-R2:

Test R2-R3:

Test R4-R6:

Test R7-R9:

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 driver safety belt buckle switch circuits for faults. If the RCM detects an open circuit or short to voltage fault, it will store diagnostic trouble code (DTC) B2691 in memory and flash lamp fault code (LFC) 51 (or higher priority code if one exists) on the air bag indicator.

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