Powertrain Control Module (PCM)
WARNING: This page is about a different car, the 2005 Lincoln Town Car. However, it is still accessible from the selected car via links, so may be relevant.
The PCM uses the CAN and the SCP communications networks. The PCM controls the engine for better fuel economy, emissions control and failure mode detection storage. For additional information, refer to INTRODUCTION - GASOLINE for diagnosis and testing of the PCM.