Volvo Troubleshooting Questions? Ask a Mechanic for Answers ASAP
Check fuse 11B/5 for power when cranking the engine. Remove the fuel pump relay and check for power on terminals 1 and 2 while cranking. Check for a good ground on terminal 4. With 2 jumper wires, jump power from terminal 1 to terminals 3 and 5. Attempt to start the vehicle. If the vehicle now starts, replace the relay.
Replace the fuse.
There is a relay 2/32 that powers the 11B/5 its a good indication the relay is bad. Find the relay should have power on the white wires coming into the relay.
That is a different relay. Looks like the one in the upper right hand of that diagram. Its in the fuse box check the diagram
Awesome swap out the relay
This is where you get power to the fuse 11 b 6 so if there is no power that means this relay is not working or the wire from the relay to the fuse is bad.
If you are not getting any power at that fuse but it will only get power when you are trying to crank the engine and that relay is active.
Try running a new wire from the relay to the fuse..
the relay powers the green red wire going to the fuse. So you run a wire from the terminal that gets hot when relay is engaged to the fuse.
Ye from the green red wire on that relay to the 11b 6 fuse.
If that fuse gets power it should turn on the fuel pump. Did you hear the fuel pump turn on ?
Follow the battery cable until you find the main fuses 11A on the diagram I think one is blown. We have to have a back fuse here somewhere for sure.
You can use a volt meter and check power on both sides.
I am at a loss here. I am going to open this up to the other experts. Stand by.