DTC B1C3A: Driver's Pre-TENSIONER (Squib) System (Squib Circuit Open): Notes
WARNING: This page is about a different car, the 2008 Mitsubishi Lancer. However, it is still accessible from the selected car via links, so may be relevant.
Fig 1: Seat Belt Pre-Tensioner (LH) (Squib) Circuit Diagram
Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
CAUTION:
If DTC B1C3A is set in the SRS-ECU, always diagnose the CAN main bus line.