there is either a seethrough or metalic silver sticker on a side of your computer.
peel the sticker off which will expose either 1 or 2 lights and a small encased dial which can be manipulated with a philips head screwdriver.
With the ignition ON take a small screwdriver and turn it clockwise. the LED's will flash together, first once, then pause, then twice, then pause, then three times. When this happens turn the screwdriver counter clockwise. The ECU is now in mode 3 which reads out the fault codes on the LED's. It will cycle through all stored fault codes.
with your led display you may have 1 light or 2 either one it is still easy to read.
then follow the above instructions
if you do have 1 led there is a definate pause between a 10 unit readout and the 1 unit readout
hope i helped