My '93 Pathfinder XE has some kind of electronic device under a plastic cover under the passenger front bucket. When I look at from the rear seats it has a red and green LED that are not lit up. Some kind of adjusting screw on it also. What is it??? What does it do??? I won't mess with it until I know more. Thanks for any help.
Thats your computer for the car :D........ it adjusts the engine ( and ac emissions etc perhaps ) dynamically.
Michael
......btw the adjusting screw is for emissions control.... it should only be adjusted IF ya know how to do that and if ya have the equipment ...... thats a tweak control for the smog checkers....You will also find engine codes being coded by those LEDs ... See a Haynes manual for a further explanation......
That is the self destruct mechanism incase you get over run by Romulans.
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