Principle Code Cycle

Diagnostic trouble codes are determined as below using the MIL and Self-Diagnosis Checker.





1. Diagnostic trouble code cycle break
The time between diagnostic trouble code cycles is 4.0 sec. (the period the light and checker buzzer are off).





2. Second digit of diagnostic trouble code (ones position)
The digit in the ones position of the diagnostic trouble code represents the number of times the light and buzzer are on 0.4 sec. during one cycle.





3. First digit of diagnostic trouble code (tens position)
The digit in the tens position of the diagnostic trouble code represents the number of times the light and buzzer are on 1.2 sec. during one cycle.


The MIL and buzzer are off for 1.6 sec. between the long and short pulses.