Once the vehicle is running, and the engine is warmer, the storage canister releases the vapors through a purge valve opened by the vehicle's powertrain control module (PCM) into the intake manifold.

A central body control module system diagram (Image courtesy of Infineon) For a closer look at automotive power supplies, please see Vikram Patel’s series of instructional automotive power blogs on ...

The powertrain control module isn't the only computer that you can find on contemporary cars, but it is the primary computer that controls most systems and functions for vehicles that utilize a PCM.

The ABS control module is a microprocessor that runs diagnostic checks of a vehicle’s antilock braking system and processes information from wheel-speed sensors and the hydraulic brake system to ...