The first code that will flash will be a code 12. It will be "flash, pause, flash, flash, pause, pause, " and repeat the cycle three times. The ECM will flash each code three times, and move on to the next. If you have no codes stored, it will keep flashing code 12. Code 12 simply tells you the ECM is not receiving any pulses from the distributor (since the car is not running).
Wednesday, June 3rd, 2009 AT 5:29 AM