My Project-1999 Disco 1

[HOSER]

I've got the fuel pump in, the wires are all joined up from new connectors to chassis wires---and then-no power at fuel pump. Checked fuses-all ok. I'm off to check Multifunction Relay today, and trace through inertia switch. Question-does the Land Rover have the standard logic for bringing on the fuel pump ie: power fuel pump for 15 to 20 sec. upon turning ign.key to pos.11, then power fuel pump off untill crankshaft sensor proves rotation at X rpm?? This, I believe is standard logic of most FI systems, then if auto quits after 20-30 sec. run time & rail pressure is low or 0- it is time to check crankshaft sensor. Does this sound reasonable. I'm going to power fuel pump with bypass wire to prove it works and then start tracing trouble from there.

[Spike555]

Yes the fuel pump gets power for 5-10 sec after the key is turned to position 2, then fuel pump shuts off until engine is turned over but I do not know how many rpm.

[Savannah Buzz]

You might be immobilized - see attached from RAVE. Check for +12 Volts or better to ground on both sides of inertia switch. If no volts at inertia, might be immobilzer.

[HOSER]

It's a great day. Thought I would remove multifunction relay. Metered it and coil looked OK. Removed inertia switch & it is ok. Set meter up and found 12 volt at inertia switch from multifunction relay at ign.sw to position 11. Ran a bypass wire back to fuel pump from 12 volts at inertia switch and viola, the unit started ( I ran it 40 seconds or so). Bonus, all the WD40 I soaked onto auto shifter mechanism-worked. I can freely shift from neutral to P and all through gears. So the boo boo is my wiring from inertia switch to new pump & connectors. I used crimp connectors with shrink wrap. I guess I'm going to redo them & solder them tomorrow and then look out as this baby will be on the street and proven worth the rest of the major maintenance over the next week or so.