Rep Power: 0

Good day to all.. I have a 2007 Civic LX w/ ~140k on it bone stock. Everything was fine until one day I went to start it and it stalled immediately. After doing some research, i figured out that I have an immobilizer issue. I had a somewhat weak battery, so I thought the car may have lost the program for the keys.



I used a Launch X-431 Throttle to reprogram the keys, but it tells me "Immobilizer System Is Not Normal" and "D-3 No Communication Between ECM/PCM And Immobilizer Unit".



I have checked every fuse, checked all connectors at the immobilizer MICU (fuse box) and ECM. All seem normal.



I really just want to bypass the immobilizer altogether and have been looking for wiring diagrams to figure it out, but I am not 100% confident I won't mess more things up. If anyone knows how to do this, PLEASE PM me with some guidance.



Otherwise, if there is a way I can test each piece individually so I don't have to replace them all, that info would be greatly appreciated.

TIA

 
Rep Power: 221

Unfortunately you cannot bypass the immobilizer.
I would call a locksmith or the dealer.
Or get an ecu, ignition cylinder, and keys all from the same car and swap that in

 
Rep Power: 0

Thank you. I appreciate the quick response, but that is exactly what I am hoping to avoid. I am not looking to throw a bunch of parts at it until something works. I would much rather isolate the problem. Plus getting all those new parts would require reprogramming and those are not the likely culprits. From what my research has shown, it's most likely that the problem is the MICU (fuse box), but again I really want to be sure before I just start changing parts.

Oh and the immobilizer 100% can be bypassed, I know for a fact. I just need to figure out how.

 
Rep Power: 221

Good luck with that....

If you do this, provided the doner car is the same as yours (engine + trans) no programming needed