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keys after swap ECU

Posted: Thu Feb 04, 2010 7:50 pm
by ilya
i have 2 keys (red + black) with honda immbolaizer.
i have ecu p3y

my keys will work??? )

Re: keys after swap ECU

Posted: Thu Feb 04, 2010 9:07 pm
by BETEK
If the keys is from other ecu then the will not work.
But i think you can reprogram at Honda dealer the new ecu to accept your keys.

Re: keys after swap ECU

Posted: Thu Feb 04, 2010 9:14 pm
by ilya
:o
u all swap ECU. and u all change KEYS??? (reprogramm)

Re: keys after swap ECU

Posted: Thu Feb 04, 2010 10:03 pm
by BETEK
I am talking only about obd2 ecu and cars with immobilizer.
If go from obd2 to obd1 conversion then you just cancel the immobilizer.

Re: keys after swap ECU

Posted: Sat Feb 13, 2010 7:24 pm
by CRX2
The immobiliser key is stored in the ECU. It reads the code from your key and only starts when it's the same. When you swap to OBD1 then there is no problem.

There is also a way to disable the immobiliser by replacing a programmed chip inside the ECU.

Re: keys after swap ECU

Posted: Sat Feb 13, 2010 8:29 pm
by BETEK
It is possible to have obd1 ecu and the stock immobilizer?

Re: keys after swap ECU

Posted: Sat Feb 13, 2010 11:10 pm
by CRX2
No. The immobilisersystem is partly integrated in the OBD2 ECU, so it can't work with a OBD1 ECU....

Re: keys after swap ECU

Posted: Sat Feb 13, 2010 11:27 pm
by ilya
u mean keys without chip can start engine?

Re: keys after swap ECU

Posted: Sat Feb 13, 2010 11:27 pm
by BETEK
Here in Greece the steals of civics 92-95 happen frequently, because they are easy target without immobilizer.
Yesterday stoled one VTI, the car belonged to a friend of my cousin.

Re: keys after swap ECU

Posted: Sun Feb 14, 2010 12:23 pm
by ilya
bad :cry:

but I also have not HONDA IMMO ) i have Honda and not Honda IMMO. previous owner installed it.

I think that when i install ECU OBD1, I leave the external IMMO.


bad, I did not know what GEN5 had IMMO ....