Count the number of time the MIL
(check engine lamp)on the instrument
panel flashes on and off.  The number
of flashes represents the trouble
code.  There is a short pause between
the flashes representing the 1st and
2nd digits of the code.  Longer pauses
are used to separateindividual 2-digit
trouble code. 

An example of a flashed DTC is as
follows:

-Lamp flashes 4 times, pauses, then flashes 6 more times.  This denotes a
DTC number 46. 
-Lamp flashes 5 times, pauses, then flashes 5 more times.  This indicates a
DTC number 55.  DTC 55 will always be
the last code to be displayed.