they are all repeated 3 times. first a start code 12
show 3 times.
then the first faultcode (also showed 3 times)
then second faultcode (showed 3 times)
etc.
end of transmission again 12 (3 times)
then it restarts again with the codes.
you can try it on your car
quote:
To do self diagnostics. Bridge terminal 4 & 15. Now turn ignition to 2nd position. trouble codes Will display after short pause .each code repeated 3 times. First code 12 (start test) eml flashes once (signifies 1) pause then 2 flashes once (signifies 2) this repeated total 3 times. Then any codes are displayed in same format. 34 would be 3 flashes pause 4 flashes repeated total 3 times. End of test Will be code 12 again.