Volvo RWD 200 Forum

Mine just went thru a shutdown back on March 2 and like you I posted and got some good advice. Here's what I did in order to eventually determine my pump was locked up.
1. Verify 25 amp fuse is good
2. Verify 8 amp fuse for main fuel pump is good. (probably ok but easy check)
3. Either resolder the fuel pump relay per instructions found in abundance here or borrow one to test your vehicle.
4. Open oil fill cap and have someone crank while you make sure the cam is turning to rule out broken timing belt.
5. Disconnect the fuel line to the common fuel rail and have someone crank the engine while you hold the fuel line in a bucket - you are testing whether you are actually getting fuel from the main fuel pump with this test.
6. Remove fuse 4 and 6 and put a jumper across the left side terminals and see if you get fuel out of the hose you disconnected above.
7. Lower fuel pump carrier and disconnect the yellow and the black terminals from the main fuel pump - Run a jumper cable from the positive side of the battery and a ground attached to the driver side dome light switch to supply direct voltage to the pump to determine if it's locked up.
8. Pull the entire carrier from the undercarriage of the car and replace fuel pump (and $10 filter if you want)
9. Torque the inlet bolt to the filter from the pump to 25 ft lbs to ensure no pressure leak when you get it back together (ask me how I know this).
10 Start it up and drive away happily.