Originally posted by Speed Phreak
Aight, my first question is that are you looking at the ECU once you turn the car on? If it flashes once when then key is turned to "ON" and then doesn't flash anymore, you have no current "codes".
Also the "timing jumper" you are looking for has nothing to do with showing the codes. It will however clear any codes from the ECU if jumpered. It is located either above the ECU bundled in the wires above it. *OR* - in the engine bay on the drivers side frame rail near the front of the shock tower.
A useless note is that the 88-89 CRX/Civic's had the timing jumper in the engine bay, the 90-91's had it inside above the ECU.
~Steven
He never said "timing jumper"....
There is however, a "jumper" or connector that is near the ECU that you check codes with... your post about the jumper really doesn't have anything to do with his posts... not to start crap, but it doesn't make a whole lot of sense. :dunno: