2002 Spec-V, Location of ECU, starting problems

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mike14mjh
Posts: 2
Joined: Tue Sep 12, 2006 5:46 pm
Car: 2002 Nissan Sentra Spec-V

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I need to find the location of my engine control unit (ECU) for my 2002 Nissan Sentra Spec-V. I think it may have gone bad. Any comments?

The car currently will not start. I bought the car with a blown head gasket. Fixed that, then drove it to work for 4 days. On the 4th night, the check engine light came on, the engine stalled, and has not been able to start since.

Symptoms:all interior lighting, exterior lighting, power windows, locks, and radio worksstarter cranks fine

The spark plugs do not spark while cranking!Any suggestions on what and how to test and diagnose the problem?

Thanks,Mike


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RED_DET
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Car: 2004 Infiniti G35 Sedan 6 spd
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1992 Nissan Sentra SE-R SR20DET
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The ECU is located under the hood by the firewall on the passenger side.

Sounds like the ecu to me as well. They aren't cheap to replace either.

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OneFastStanza
Posts: 1116
Joined: Wed Aug 14, 2002 1:06 am
Car: '02 Nissan Sentra SE-R Spec V
'92 Nissan Stanza
'97 Nissan Maxim
'04 Saturn Vue Redline
'04 Ford F250

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Yeah as Mike said the ECu is on the firewall on the left side when looking in the engine bay. It is a PITA to get out as well. Hope you get it taken care of easily.

soccer11
Posts: 2
Joined: Mon Sep 25, 2006 3:34 pm
Car: 2003 Nissan Sentra Se-r Spec V

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Hey i had that same problem too i still cant fix it still having problems and i bought a computer too i have 2 and they both work. Please if u find anything out reply to me

nametakennow
Posts: 10024
Joined: Sat Aug 24, 2002 4:14 pm
Car: '06 MINI Cooper S

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The ECU is actually in a box in the firewall. It's a PITA to get out the first few times, make sure you have some ratchet extensions handy, they make it a lot easier.

What SES code are you getting?

mcst18
Posts: 3
Joined: Fri Jun 26, 2015 12:10 am
Car: 2002 sentra se-r spec v

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soccer11 wrote:Hey i had that same problem too i still cant fix it still having problems and i bought a computer too i have 2 and they both work. Please if u find anything out reply to me
By any chance do you still have the ecu's?


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