error codes and testing!

[p1k4mp3]

hi there guys!i have a nissan 240sx, 1990!i have engine led allways turned on!than, i want to know how to view problem/error, and how!thanks guys. i'm deseperated¨!something like a led contact and counting the bliks, works?how? and where?thanks

[zenkii]

its easy to check the code, heres a good link that tells you everything about sighting ECU codes and how to'shttp://www.ka24development.com/ecu_codes.htmlthis page belong to a user on Ka-t.org and Freshalloy, he goes by Orion and his work is accurate