I still have my immobiliser failure, Code issue.
I've checked all fuses under steering wheel and in engine bay, checked all relays again in engine bay and under steering wheel, checked all wiring behind relays in engine bay, attached and unattached in no particular order immobiliser antenna, ECU wiring, battery terminals.
I've bridged the battery terminals for 30 seconds after leaving battery off for 10 minutes, 30 minutes and 24 hours, i've fully charged battery, i've load tested battery and showing good so not a battery fault.
I've replaced ECU, Body computer, immobiliser antenna, key transponders.
I've tried earthing ECU with a jump lead also attached lead to engine block, just incase as someone suggested I had a bad earth.
I've tried wiggling my steering wheel, i've tried thinking happy thoughts and i've repeated "I believe in fairies" 10 times but i'm close to fetching the lump hammer
Theres no haines for alfas so i'm struggling on finding earths so far i've found 3 earth points, one on ECU, one below relay box to the right hand side and one on the bottom end near the gearbox, am I missing any ?
A couple of other things that may be of help, before I swapped the above I managed to get my codes from alfa dealer thanks to Iain off here and tried inputting that but with no joy input the code but engine management light never flashed as it was supposed to it just went back to solid again after inputting code.
Both immobiliser antennas return a reading of 4 OHM i've seen on here its meant to be 8 OHM but not a definitive one mostly "I heard" so i'm unsure on this.
Also my engine fan comes on the moment I put my key in which i'm presuming is not meant to happen until a set temp (i'm not sure if it was doing this before the new ECU so may be a pairing issue with that) My lower door lights were not working after changing the ECU but these have started working again now on there own.
Any advice suggestions or anything would be greatly appreciated because at the minute i'm completely lost with what else to try on the car and I really do need it going by tuesday if theres someone local of a mechanical mind then i'm happy to discuss payment if you wanna have a go i'm located just outside stafford, other than that i'm all ears, please help
EDIT: Sorry forgot to say its a 1.6 TS on a 53 plate