[Q] HOWTO:Bypassing key-code check in ODB-II ECU
Friend of mine wants to swap from b16a1 (ODB-0) to b18c5 (ODB-2)...
We got one problem... We have been told that all ODB-2 ecu need a key to complete the start sequence...
- put key in
- ECU reads key
- ECU sends signal to fuel pump
- Fuel pump starts
- Engine can be started
Our problem... We do not have the key that goes with that ECU...
Our question is how do we bypass this signal... because the alternative is spending a lot of money on, for example, a Spoon ECU...
This problem is the only thing holding us back from doing this swap...
We got one problem... We have been told that all ODB-2 ecu need a key to complete the start sequence...
- put key in
- ECU reads key
- ECU sends signal to fuel pump
- Fuel pump starts
- Engine can be started
Our problem... We do not have the key that goes with that ECU...
Our question is how do we bypass this signal... because the alternative is spending a lot of money on, for example, a Spoon ECU...
This problem is the only thing holding us back from doing this swap...
Not all OBD2 cars have immobilizer systems. Acura did not start putting immobilizer systems into Integras until 1999. OBD2 started in 1996.
Sorry but I will not be sending this ECU anywhere...
Anybody else some hints ? BTW ECU is from an 2000 ITR
Anybody else some hints ? BTW ECU is from an 2000 ITR
Honda can reprogram the ECU to accept the code on the key you have or make you a key with the correct chip in it. Be prepared to show proof of legal ownership of both the car and the motor
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You have a few options. Get your hands on a 97 ITR ECU-no immobilizer system. Make the engine OBD1 and you have several ECU choices (GSR, P28, P30). I have run a 97 LS block ,which is OBD2, with a chipped P28 ECU and a 98 OBD2 GSR block with a chipped P28 ECU. Or you can put the entire immobilizer system in the car, including the transponder which "reads" the key, and have a Honda/Acura dealer cut you a couple of immobilizer keys for your car.These keys are not cheap, by the way. Then have the dealer reprogram the ECU to recognize the keys. You will need to be prepared to show legal ownership of both the engine and the vehicle if you want to go this route (as mentioned above).
As for by-passing the immobilizer, I have not heard of this before, but I don't doubt that someone resourceful on this board could pull it off. Good luck.
As for by-passing the immobilizer, I have not heard of this before, but I don't doubt that someone resourceful on this board could pull it off. Good luck.
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nick91civicsi
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Oct 25, 2009 03:27 PM




