Non Starting.

Hi Norbert, I think I'm getting incorrect readings owing to the voltage meter pins beings a bit too thick I've ordered some needle thin ones ,as im finding it hard to make good contacts at the loom pin contacts as they are slightly set inside. .Sorry struggling amateur..Regards Nigel.

Hi Norbert ,ECU connected, ignition on,both the main relay and fuel pump relay click,but no sound from the fuel pump.As I said I will do the bulb test once I have the thin meter probs this week. Thanks ,best Nigel.

Hi Nigel,
you have to find out the reason for the fuel-pump-failure.
Could be the fuse in the little black box near the relays, a non-contacting relay, the wiring or the pump.

Regards
Norbert

Hi Norbert,The fuse is new  the relay is new ,I've also swopped it for a 2 year relay and the pump is as new .Last time I checked in this situation there was no power to the pump at the pump terminals. I've tried swapping the main relay .no joy. Could I run a cable outside the car to the live side of the pump and a seperate cable to an earth point.from the pump .If so which terminal at the relay should I connect to.? I take it you don't think this is a ECU issue ? I've seen as mentioned before two green and white cables from the relay to the wheel arch and inturn one for sure goes to the pump .Somewhere along the cable it must be split as at the plug end pump connection is a brown and the green and  white cable .At the pump relay one of these cables comes from 87 the other 30/ 51.both green and white. Regards Nigel. As the pump activated when I grounded the test light to pin 85, the lead must be OK from the relay to the pump.! Could it be a poor earth for the pump? If I connected a cable at the pump connection on the negative side to ground would this prove it? 

Hi Nigel,
pin 87 of the FPR is the point for the positive wire. The negative connector of the pump is ground -you could connect it to one of the brown cables, pin 11 or chassis ground to test the function with good ground.

I saw the cable harness is split (I think at the firewall) with a (I think big) connector plug.
Is anything o.k. there?

There is a split point (welded) inside the car (I think, it will be near the ECU). This is essential for both the lines 24 (injector-power) and 86 of the pump relay.
I have an electrical plan without the colours only, but I think this is the point where you find answers for your colour-questions... This line also could be faulty. It's also connected in the connector-plug.

The plan I have won't help you because it is in German and the additive notices there are essential.
Do you have an English plan?
I didn't find one, but I know both Bosch and BMW published such plans.

Regards
Norbert

Hi Norbert ,Thank you for that ,I will try and look  at the cables for faults ,there is a triple plastic clear blocks fitted to my top servo ,I've take this apart to have a visual check of the wires they all appear ok.Yes I have a BMW wiring diagram, but I'm getting out of my depth with the electrics.A friend is paying me a visit next month and he has good knowledge like you of this system, so I hope between you both I will get to the bottom of the problem..The weather is horrible here so not missing much driving.Regards Nigel