- a) the vehicle connector is missing, has been tampered with, or is otherwise inoperable; or
- b) the malfunction indicator light is commanded to be illuminated and it is not visually illuminated according to visual inspection; or
- c) the malfunction indicator light is commanded to be illuminated for any on-board diagnostic trouble codes; or
- d) the malfunction indicator light (MIL) does not illuminate at all when the vehicle is in the key-on/engine-off condition.
Vehicles subject to on-board diagnostic testing shall fail the on-board diagnostic test if one of the following occurs:
(Source: Amended at 25 Ill. Reg. 16379, effective December 18, 2001)