ECU Power Down

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Dec 15, 2001 | 07:02 PM

Pacey3182

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Joined: Sep 2001

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From: Lees Summit, MO

ECU Power Down

Hey Guys,

What happens to the ECU when you kill power and then power it up. Does it reset anything?

Thanx

Dec 15, 2001 | 10:07 PM

Scott 89t2

SOLD THE RX-7!

Joined: Mar 2001

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From: Vancouver, BC, Canada

you mean disconnect the battery? yes it resets ifself.

Dec 15, 2001 | 10:53 PM

cymfc3s

I Raise Chickens

Joined: Jul 2001

Posts: 1,219

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From: Half Moon Bay, CA

The ecu resets, but retains all the codes. If you want to clear the codes, remove the positive terminal and depress the brake pedal for a few seconds.

Dec 15, 2001 | 10:55 PM

Pacey3182

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From: Lees Summit, MO

Thanx, that helps.

Dec 15, 2001 | 11:19 PM

Keith

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Joined: Mar 2001

Posts: 501

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From: Lawrenceville,Georgia,U.S.

Uh, your profile shows this to be an 87. If it is, you do not have to worry about the ECU retaining codes - this ECU (86-88) loses its error codes as soon as the error disappears. It couldn't retain a code to save its life!

So don't worry about the brake pedal - you can't erase what isn't there!

Irv, Keith's dad

Dec 16, 2001 | 01:15 AM

Scott 89t2

SOLD THE RX-7!

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From: Vancouver, BC, Canada

Quote:

Originally posted by cymfc3s
The ecu resets, but retains all the codes. If you want to clear the codes, remove the positive terminal and depress the brake pedal for a few seconds.

I've never had to touch my brake pedal. and I've cleared codes a few times while traking down a problem with my O2. just removed the neg termanal for 30 secs or so and the code was gone.