Circuit/System Description
WARNING: This page is about a different car, the 2009 Saturn Vue. However, it is still accessible from the selected car via links, so may be relevant.
The fuel pump flow control module uses the serial data network to signal the engine control module (ECM) that the fuel pump control module is requesting malfunction indicator lamp (MIL) illumination. This happens when the fuel pump control module has determines that a failure that affects emissions has occurred in fuel pump control system. When the ECM receives the message from the fuel pump control module, DTC P069E will set.