Does 02 Sentra gxe 1.8 has a diagnostic on its ecm

there are codes but you have to have the correct scanner and know how to set the ECM switch to get the data link to read out
get it to a specialist service center

Part 1 -How to Test the Ignition COP Coils (Nissan 1.8L)

troubleshootmyvehicle.com > Nissan > 1.8L

Feb 12, 2013 - What Tools Do I Need to Test the COP Coils. ... coils (most commonly known as the COP ignition coils), on your 1.8L Nissan Sentra is pretty easy. ... When one COP ignition coil fails... that cylinder goes 'dead' due to a lack of Spark and is said to be misfiring. .... 2000, 2001, 2002, 2003, 2004, 2005, 2006 ...

Part 2 -How to Troubleshoot a No Start (Nissan 1.8L)

troubleshootmyvehicle.com > Nissan > 1.8L

Jan 17, 2013 - Checking for Spark With a Spark Tester. ... Your 1.8L Nissan will either have a distributor-type ignition system or the more modern COP ... A BAD fuel pumpwill cause your 1.8L Nissan Sentra to Crank but Not Start... since the ... Still, the other method that I've used to test for a lack of fuel... is spraying starting ...

2002 Sentra 1.8, no spark, code 0505... - Nissan Sentra Forum ...

www.b15sentra.net > ... > Technical Discussion

Nov 4, 2008 - 15 posts - ‎3 authors
I have never had a problem with the car before (02 Sentra 1.8/auto), so I had no need to post ... Originally Posted by Black B15 ... Join Date: Jun 2005 ... Can you see if the coilpacks are getting spark & work back from there? how many spark plugs do i need ? - Nissan Sentra ...
7 posts
Mar 19, 2010
Spark Plug Replacement - 2002 GXE 1.8L - Nissan ...
15 posts
Oct 12, 2009
1.8s starting problems - Nissan Sentra Forum - B15 ...
15 posts
Jun 23, 2009
No start on 1.8L 02 GXE - Nissan Sentra Forum - B15 ...
15 posts
Apr 11, 2009
More results from www.b15sentra.net

Not like the models built before 1993 did. You use a code reader or scanner like any other car built after 1996.

Located in the distributor (if so equipped). Here is a link on how to do a basic troubleshoot on a no start condition:
How to Troubleshoot No Start Nissan 1 6L 1 8L

02 sentra vent selector switch not working.
heat does not work either.
2002 nissan sentra gxe

5w30

How to Find and Fix Vacuum Leaks Ultimate Guide

check this out, it might help you. I had same issue on a car once like the one your describing and this fixed it.

Try the autozone.com website. Go there and register the car information and you'll have access to an online repair manual for the car. Hope this helped and best wishes.

The ECM on my 2002 nissan sentra gxe is located on the left side of the firewall if you're standing in front of the car. It's easy to get to and remove, just a few bolts and a harness. The problem is in finding a replacement. Not many of the rebuilders want to deal with this model as they get a lot of returns. Seems Nissan put a foam liner inside the ecm and even if taken out early there were problems as the glue used to hold the foam caused bad problems with the board in the ecm. There was a recall so if your car wasn't fixed you may get an ecm at no cost.