Thread: urgent help needed broken in camoweal

Originally Posted by lewy

my new 2003 v8 disco es,when i turned it off it now wont start,engine turnes over,no spark no power to fuel pump,thinking engine emoboliser,how to reset will be a start,i didnt lock the car for 20 mins i think that does something to the imobilizer,this may get expensive,any help please.

Start with the inertia switch, on the passenger side firewall, under the bonnet. press the big rubber button on top. They are known to be touchy.

thanks mate i have done that,no differance,if i unplug that will that rule a faulty switch out

From the engine wiring: check in pass comp fuse box: Fuse 24, fuse 14, ign relay R211
Eng comp check fuse 13, (inertia sw), link 8, main relay R100. This relay switches on the fuel pump and other functions when the inertia circuit is operated. If you temporarily earth terminal 86 of the main relay this bypasses the ECU's switching-on circuitry. It is a small blue/red striped wire to the ECU. Check for 12V at terminal 85 and terminal 30 of this relay.


I remember researching this before and working out how the anti-theft worked. There is a simple "transit plug" under the dash somewhere which bypasses the anti-theft. Look for a blue/red stripe wire in a loose plug and earth it. The wiring diagram on my laptop doesn't show that bit but it's in RAVE somewhere.

there ia a fusebox under the steering wheel,is there one under the the other side

Originally Posted by lewy

there is a a fusebox under the steering wheel,is there one under the the other side

My money is on the main relay under the bonnet. Try looking at the yellow relays and see if they are identified. They are a known failure item. Check their terminal arrangement, you may be able to swap relays. Bridging the main relay, terminal 30 to 87 will also energise the fuel pump circuit.

Does the red flashing security LED go off when you try to start?

with key removed,light flashes,key in ignition light goes off,when you wind engine over light off.

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