Smart Sensors and Diagnostic Critical Electronic Control Units: Design Update

Modern powertrain control systems are composed of a complex arrangement of control modules, conventional sensors and actuators, and new “smart” sensors and actuators. The current CARB OBD regulation contains a definition of a “diagnostic critical electronic powertrain control unit” that has implications for the design of smart sensors and actuators. This presentation will explore these implications and propose some guideline for complying with the existing regulation and suggest some improvements for the future regulation.