DTC B1B12: Driver's Knee Air Bag (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: Knee Air Bag Module (Squib) Circuit Diagram
Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
CAUTION:
If DTC B1B12 is set in the SRS-ECU, always diagnose the CAN main bus line.