When you hold down your odometer reset button while the ignition is turned off and turn the ignition on (holding the button still) after about 3 seconds it will do a gauge test.(a lot of ford vehicles will do this) If you release and press again it does a light test. After that you continue pressing and it gives a lot of values, but i cant figure out the abbreviations. I figured a few out like rpms, coolant temp, and fuel level, but there are about 20 more that i have no clue what its representing. I did a search but couldn't come up with anything. anyone know anything about it?