DTC 74/B0136: Open In Left Seat Belt PRETENSIONER Squib Circuit: Description
WARNING: This page is about a different car, the 2002 Toyota Camry. However, it is still accessible from the selected car via links, so may be relevant.
The left seat belt pretensioner squib circuit consists of the air bag sensor assembly and left seat belt pretensioner. The squib circuit causes the left seat belt pretensioner to deploy when deployment conditions are satisfied.