How long does the ECU take to reset itself after disconnecting the batt.? - DSM Forums: Mitsubishi Eclipse, Plymouth Laser, and Eagle Talon Forum: DSMtalk.com
 
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Old 01-24-2002, 05:19 PM   #1
eyebrowski
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How long does the ECU take to reset itself after disconnecting the batt.?

anyone?
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Old 01-24-2002, 05:23 PM   #2
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Give it 30 secs and it'll be good to go!
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Old 01-24-2002, 05:35 PM   #3
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ok, thanks.
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Old 01-25-2002, 07:24 AM   #4
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I would say go for 10 minutes to gaurantee success.
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Old 01-25-2002, 02:24 PM   #5
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10 minutes! Damn. It does NOT take 10 minutes If you don't want to take my word for it then go to TMO.com and look up resetting the ECU. It only takes like 15 or 30 seconds.
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Old 01-25-2002, 02:34 PM   #6
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Ok, Ok, don't get hostile
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Old 01-25-2002, 02:36 PM   #7
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Gotta agree...everything I've read says 30 seconds.

Here's a thought though. I've disconnected my battery for as much as 5 minutes when I've gotten a CEL in the past. Sometimes it would stay off, but mostly it came back. Someone told me to actually disconnect the ECU caps so there is no residual power to the ECU. Every time I've done that, the CEL never comes back. I read somewhere that the ECU has some kind of wire that can get power even if the battery is disconnected...this sounds ludicrous, but...just to be safe, I did it.

Just my $.02
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Old 01-25-2002, 02:43 PM   #8
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RippinGSX, not being hostile. That's just a long time to just reset the ecu. That's all.
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Old 01-25-2002, 02:47 PM   #9
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Quote:
Originally posted by dsmtrance
RippinGSX, not being hostile. That's just a long time to just reset the ecu. That's all.
I was just kidding I was thinking disconnecting the battery and not the ecu itself which I have read takes 10 minutes plus. If I understood the original post he was talking about dissconnecting the battery and not the ecu itself.
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Old 01-25-2002, 02:54 PM   #10
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If resetting the ecu is all you want to do then you do not need to disconnect the batt at all. Go to TMO.com and look up how to reset the ecu. All you have to do is pull a fuse in the fuse box by your left foot for like 15 or 30 seconds (on 1G's...not sure if 2G's are the same or not). Has worked for me every time (now I have the pocketlogger to do it). It's the fuse on the lower right corner (I believe it also controls the lights that come on when you open the door).
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Old 01-25-2002, 02:59 PM   #11
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I've never had the engine throw a CEL in over 6 years.
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Old 01-25-2002, 04:05 PM   #12
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Quote:
Originally posted by V8SpankR
I've never had the engine throw a CEL in over 6 years.
The bulb is probably out.
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Old 01-25-2002, 04:11 PM   #13
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well ive been recently getting the CEL for my air temp sensor in the MAS. I replaced it with a used one but i am still getting the CEL. I left it off for an hour (forgot about it. ) and it is still on. well ill have to try that ECU reset. I hope it works. Has any of u had this problem?
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Old 01-25-2002, 04:18 PM   #14
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When I had CEL it took more than 30min to have it go away I tried 30 sec,5min,10min,20,30,and finally after 45 it went away.

late,
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Old 01-25-2002, 06:16 PM   #15
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My 2G MAS throws code 13 (intake air temp sensor) all the time too. I am on my 3rd 2G MAS b/c I thought is was a bad MAS. But after 3 MAS's I do not think that that is the problem. I am in the process right now of making a custom CAI (cold air intake) for the filter. I'm thinking that the extremely hot air that is getting to my filter may be the problem (intake temps on my pocketlogger have at times gotten up to 115 deg. or more!).

Yeah, if you have'nt had a CEL in 6 years then you may have a burned out bulb. J/K. You may not, but I throw them all the time (mostly the MAS code and the EGR code). Oh well, I just cancel them out w/ the pocketlogger. They don't seem to cause any problems except the light.
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