Red immobilizer light steady on - UCH or wiring ?

[DamboDD]

so the other day i welded the throttle pedal cables to the ECU (bought the car like that).
after finishing the job the car won't start. turning the key (both keys i have), red light lit and stay lit, oil pressure light lit also and thats about it. no starter and bump start also won't work.
if i turn the key fast directly to starter so it will turn the engine. no start. oil pressure light will shut off for 5 seconds and then light again.

a friend of me came to help with the CLIP and it said there is no connection to computer. there where some faults but he erased them before i sew the numbers or names. my friend says its the UCH stuck or something like that. i don't thing so.

after searching a while here a few people said it would be a broken 2 wires that go between the UCH and ECU. does anybody know what they are ? which numbers ?
or if it is the UCH, how can i verify it ?

reminder, that problem didn't exist before the welding.

p.s
tried to connect via ELM327 OBD (wifi-iphone) it will connect to the device but won't establish connection with computer (thats what the log says)

thanks

 

[GrahamS]

God knows what welding your throttle means.

Look at the small relays in the engine bay as they oftern cause this problem if faulty, seen it three times now.

A bad gearbox earth will also do the same thing

 

[Ianboom]

May sound an odd question, but what state is your battery in?

My son's clio had a flat battery and after being charged it did the same, need a reset (can't find the thread at the moment, but is something like ign on, off, lock doors with keyfob, open doors and start car????)