35 Ill. Adm. Code 276.103
Abbreviations
Section 276
Section 276.103
Abbreviations
Abbreviations used in this Part include the following:
cc/min
cubic centimeters per minute
CO
carbon monoxide
CO
2
carbon dioxide
DTC
diagnostic trouble code
HC
hydrocarbons, as hexane
I/M
inspection and maintenance
MIL
malfunction indicator light
NIST
National Institute for
Standards and Technology
NO
nitrogen oxide
NO
x
oxides of nitrogen
OBD
on-board diagnostics
ppm
parts per million by volume
RPM
revolutions per minute
SDM
source detector module
TBD
test-by date
TED
test eligibility date
VIN
vehicle identification number