OBD2
07-01-2005, 09:06 AM
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OBD2
has anyone figured out if theres a way to bypass the obd2 learning function on the ecu. i used to do this with my 5th gen prelude. either cut the obd2 wire or install an inline switch. anyone know what im talking about?
07-01-2005, 09:41 AM
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yes obd2 after u reset the ecu the ecu starts to relearn factory fuel maps so your gains u see at first dont last that long. gains stay there but sometimes not as much.does anyone have the wiring diagram for the ecu?
07-01-2005, 09:44 AM
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the wiring diagram should be available in the shop manual.
But i dont think that just cutting wires is going to help, it will probably hurt more than it will help.
But i dont think that just cutting wires is going to help, it will probably hurt more than it will help.
07-01-2005, 10:43 AM
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http://www.ntpog.org/mods/fifth-afc/ecu.shtml
this is the link to what im talking about im just trying to find the proper wire on the s2k ecu if it has it
this is the link to what im talking about im just trying to find the proper wire on the s2k ecu if it has it
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07-01-2005, 12:46 PM
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ok so your not cutting wires really, what you are doing is resetting the ecu each time you get in the car.
The back of the ecu should have three plug locations.
On the center plug on the bottom row there should be (starting from the left) a blankspot, a terminal, a blank spot/gap (bit different than the first one), Important terminal, terminal,blank spot/gap (like 2nd one), terminal, and then two blankspots like the 1st, and then a blank spot/gap.
THe important one as marked above is the one you are interested in it should be the second terminal starting from the left on the bottom row.
It should have a wht/red wire going into it from the plug.
That wire is the Voltage Backup for the ECU and is the only one which remains at battery voltage while the car is off/on.
It is my guess that this wire is where you would splice to put in a switch.
BUt to be careful you should get a voltage metere and check to see if the Wht/red actually does remain at battery voltage at all times regardless of if the car is on or off.
Disclaimer: I accept no responsiblity for any damage caused to any part of your car, from using any information in this post. I do not claim to know what I am talking about, and therefore you should not do anything that is described in this post. You should consult a proffesional before you attempt to do any work on your own car. Better yet , just have a proffessional do any work you might like done to your car.
The back of the ecu should have three plug locations.
On the center plug on the bottom row there should be (starting from the left) a blankspot, a terminal, a blank spot/gap (bit different than the first one), Important terminal, terminal,blank spot/gap (like 2nd one), terminal, and then two blankspots like the 1st, and then a blank spot/gap.
THe important one as marked above is the one you are interested in it should be the second terminal starting from the left on the bottom row.
It should have a wht/red wire going into it from the plug.
That wire is the Voltage Backup for the ECU and is the only one which remains at battery voltage while the car is off/on.
It is my guess that this wire is where you would splice to put in a switch.
BUt to be careful you should get a voltage metere and check to see if the Wht/red actually does remain at battery voltage at all times regardless of if the car is on or off.
Disclaimer: I accept no responsiblity for any damage caused to any part of your car, from using any information in this post. I do not claim to know what I am talking about, and therefore you should not do anything that is described in this post. You should consult a proffesional before you attempt to do any work on your own car. Better yet , just have a proffessional do any work you might like done to your car.