fuel pump relay
According to the 2003 wiring diagram I have the fuel pump relay is located in the CEM under the drivers side of the dash. Remove the finisher under the dash then you will see the CEM with all it's relays. the pump relay is in slot CMI12, which is the bottom row of relays, fourth one from the left.
also check this website for more info: http://www.matthewsvolvosite.com/forums/viewtopic.php?t=9681
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