ECM replacement

2005 NISSAN ALTIMA
9,100,000 MILES • 3.5L • V6 • 2WD • AUTOMATIC
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DANIELLE DUVAL
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Ground cable from battery (negative) broke off complete burned up four coil packs. do i need to replace the ECM? i don't know if there is damage to it or not. yet i am repairing all of this myself and don't know much yet? Nissan does not make any new computers for this year and model. so what do i do?
Feb 15, 2019 at 11:22 AM
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ASEMASTER6371
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Good afternoon,

Did you replace the battery cable with a new one? You need to do this first.

Burning the coils from a bad ground cable is common. They need to be replaced. Once they are replaced, I would see if it starts. You may or may not need to replace the ECM from a power spike.

Did anyone already tell you it needs to be replaced?

Roy
Feb 15, 2019 at 1:34 PM
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DANIELLE DUVAL
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No it is just what i read online. they said to replace the ground cable all six coil packs and the ECM. i have not done the work to it yet, i am still waiting on weather. i need to replace all of it or just the ground and coil packs?
Feb 15, 2019 at 1:38 PM
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DANIELLE DUVAL
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Okay, I will just replace the ground and coils and see what it does. i just didn't want to have to buy coil packs again because they said it will burn out again. also, Nissan doesn't make the ECM new anymore. what so i do about that if i have to get one where should i get one?
Feb 15, 2019 at 1:43 PM
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ASEMASTER6371
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There are plenty of places that still make the ECM. That's not an issue.

I would replace the cable and the coils first.

Roy
Feb 15, 2019 at 1:46 PM
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DANIELLE DUVAL
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Okay, thanks.
Feb 15, 2019 at 2:35 PM
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ASEMASTER6371
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You are welcome.

always glad to help.

Roy
Feb 15, 2019 at 2:38 PM
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DANIELLE DUVAL
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Hi Roy, I replaced the coil packs and the ground cable and the car won't start.
Feb 20, 2019 at 10:50 AM
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DANIELLE DUVAL
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Is there any way to test the ECM? I mean to do that how I know but not starting because Nissan wants me to tow it down there so they can do a diagnostic on it. which is another hundred fifty bucks plus $120.00 to have it towed. then they said that the new ECM is $784.00 and it's going to be $355.00 to reprogram it and labor. a lot of money.
Feb 20, 2019 at 10:54 AM
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ASEMASTER6371
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Okay, you would need an advanced scan tool that can read the ECM and it outputs.

So, now the ECM is available? The price is high. You could get a better deal at a private shop and save yourself a ton of money.

Roy
Feb 20, 2019 at 10:58 AM