NPC

Update so far Used a multi-meter and measured from the solder pins, at the back of the green connector on the instrument cluster. I just wanted to prove electrical connectivity across as many variables as possible i.e. across plugs and connectors. Read 23ohms total resistance for the yellow wires and reader coil. This seems to be about right, judging by other posts. Twisted the yellow wires and held with black tape, as Tech1e suggested. I then plugged in only the instrument cluster connectors and re-connected battery. So with all dash furniture and steering wheel still removed, inserted the ignition key, and hey presto no immobilizer light and engine started. I will now start putting dash furniture, steering wheel and other connectors back together. At each stage I will keep checking immobilizer functionality, including turning steering wheel and adjusting up and down. Hope this helps someone else. NPC

Hi Tech1e Excellent post on the perennial Fabia immobilizer problem I have removed enough dash furniture to access the instrument cluster, wiring loom and ignition barrel. I can see that the original reader wires, green and black I believe, have been cut and folded back in the loom. 2 yellow wires have been installed between the the reader and instrument cluster. Interestingly they have not been twisted, so could possibly be affected by interference. While I have access to the immobilizer gubbins, I would like to check the electrical integrity of the immobilizer circuit. Can I use a multimeter to measure from the T32 connector towards the reader. What resistance would I be expected to read? Thanks in advance NPC