DTC 33/B1141: Left-Side Air Bag Sensor Assembly Malfunction: Description
WARNING: This page is about a different car, the 2002 Toyota Sienna. However, it is still accessible from the selected car via links, so may be relevant.
The side air bag sensor assembly consists of a safing sensor, diagnosis circuit and lateral deceleration sensor. The side air bag sensor assembly receives signals from lateral deceleration sensor, judges whether or not the air bag must be deployed and diagnosis system malfunction.