hi all,

Can someone please explain to me how the ignition immobilizer works on our Honda fits? I have one key for this used car and the middle portion of the key cracked off from the plastic fob portion.

 

The immo disables power input to the fuel pump relay (according to description). In theory you can bypass the contacts of fuel pump relay and start the engine (unless the injectors disabled as well but I doubt it) provided you have a master key to unlock the steering and operate ignition switch.
My psycho neighbor who was affiliated with Honda used car dealer, obtained a master key and opened my car and used laptop with pirated software made in his native country (which did not work) to bypass an immo. I caught him in act and called cops but they let him go because of his mental issues (they confiscated his laptop and key though)

 

Rock on! Thanks for this. The failing-to-start behavior mimicked a gas issue which makes the fuel pump relay cut off a dead ringer.

I've had success (read: no more hard starts) with putting the two pieces of the key back together when starting the car.

Honda wanted $310 for a new key, cut, program. Local locksmith told me to buy 2 keys off of eBay for $11 a pop and he'd cut and program them both for $60, guaranteed. Thank you, 2.0 economy. For what it's worth, the parts counter guy at my local Honda dealer was going to take pity on me and give me the key at cost ($252) instead of at the marked up price of $315.