Obd2 Ecu not earthing fuel pump

[Sump_slammer 23]

Dont know if anyone eles has had this issue. The Ecu should earth my fuel pump relay to prime the fuel pump then when cranking turn the pump on. Mine has stopped doing this, but if I earth the wire going to the the ecu from the fuse box it will run the fuel pump when the ignition turns on. But if you sit there with the engine off but woth ignition on the pump will continuously run. Main earth on ecu pin 1 is good, main live and switch lives are good, earths under battery on chassis leg are all clean, earth on inlet manifold is good. Any other ideas? Have a new ignition switch on the way incase somthings up with that for the sake of £6. Thanks. 

[p0u1 14]

 Have you tried a different relay?

 

Btw before you change the ignition switch just connect the swtch outside the barrel and use a screw driver, leave you key in the original switch for the immobilizer.

 

This way you can test it without all the work.

 

 

 

[Sump_slammer 23]

yeah relay is fine if i earth out the wire going to the relay the relay clicks over and the fuel pump runs. its a new relay a year ago also the ignition switch is £6 so ill just stick it in when I replace all the locks on the car as they were mostly all odd.

Edited January 31, 2018 by Sump_slammer

[Sump_slammer 23]

If anyone has this issue, the immobiliser module was blown. It was a immobiliser delete ecu and had no coms to it from the obd port. But after bypassing the immobiliser From the obd port to the ecu the car started and the ecu ran the fuel pump correctly.

[bmcc 0]

How can you bypass the immobiliser?