Fuel Pump
WARNING: This page is about a different car, the 2010 Volvo V70, 2009 Volvo V70, and 2008 Volvo V70. However, it is still accessible from the selected car via links, so may be relevant.
The central electronic module (CEM) (4/56) receives a request to start the fuel pump from the engine control module (ECM) (4/46) via CAN network. The central electronic module (CEM) then activates an internal relay that supplies power to the fuel pump unit (4/83), which in turn powers the fuel pump (6/33).
If the CAN network does not function the relay for the power supply to the fuel pump control module will not be activated.
In the event of a collision in which the airbags are deployed, a signal is transmitted from the supplemental restraint system (SRS) module (4/9) to the central electronic module (CEM) via the CAN network. The central electronic module (CEM) deactivates the relay for the fuel pump unit.