S70 L5-2.4L VIN 55 B5254S (1998)
Main Relay (Computer/Fuel System): Description and Operation
MAIN RELAY
The Engine Control Module (ECM) activates the main relay (2/32) when the ignition is switched on. At the same time the Fuel Pump Relay (2/23) is
activated for one second to enable the Fuel Pump (FP) (6/31) to build up pressure.