Distance Since MIL Set

Distance Since MIL Set
The Euro Stage III OBD directive requires that the distance traveled by the vehicle while the MIL is activated must be available at any instant through the serial port on the standard data link connector. This feature works as follows:
1. If the MIL is illuminated due to a fault, the distance count is updated (i.e. it is counting).
2. If there is a stale MIL fault (i.e. the fault is still frozen in memory but the MIL has been extinguished due to 3 good trips), the distance count is held (i.e. frozen).
3. If the distance count is being held due to (Item 2.) and the fault is cleared, the distance is cleared (set to zero).
4. If the distance count is being held due to (Item 2.) and another MIL occurs, the distance count is reset (to) and begins updating anew.
5. If a fault occurs while the MIL is already illuminated due to a previous fault (the distance count is updating), then the distance count continues to update w/out interruption.
6. If the MIL is flashing due to active misfire and there is an active fault (i.e. matured fault for which 3 good trips have not occurred), the distance count behaves as the MIL in ON.
7. If the MIL is flashing due to active misfire and there is no active fault (i.e. the MIL is flashing for a 1 malf.), the distance count behaves as if the MIL is OFF (because it is not yet a matured fault).
8. The distance count is cleared whenever the fault is cleared. (Via 40 warm up cycles, or via scan tool).