Need a little help my fuel pump it's not priming checked with new relay and no better when I connect straight to a battery fuel pump works so what do I check next how can I get over this

 

There's a second relay for the injection system, if that doesn't work then the fuel pump relay doesn't either, if not then could be a wiring problem.

 

How do I check ? I have swapped relays with spares I had there the 2 yellow ones I think ? Still no joy if I bridge the relay it will work but it doesn't prime just stays on constant ? Any wiring diagrams or simple tests I can do thanks

 

Here's a hand drawn diagram:



You will see that the output of the Fuel Injection Relay (87) provides a positive to one side of the coil of the Fuel Pump Relay (86). The negative coil terminal on the fuel pump relay (85) is controlled by the ECU. When both coil terminals on the fuel pump relay are correctly charged, current can flow from the supply (30) to the pump (87).

Lee

 

Just to add to Lee's diagram...

Fuel pump relay is the silver one in the middle row up to the left of the yellow (sometimes Red) injection system relay.