Readiness Monitors
Three
monitors run all the time when the engine is running, the remaining monitors
run intermittently during normal driving. These monitors report to the OBD
computer if the engine’s emission performance is, or is not, in compliance with
Ontario Drive Clean emissions regulations.
These
monitors also report to the On-board computer as being “ready” or “not ready”.
If they are “not ready,” they are not yet in a condition to determine if the
associated emissions systems are working correctly. When a vehicle is taken to
an OBD testing facility to receive the OBD test, the first thing the testing
equipment does is check these monitors.
For model
year vehicles 1998-2000, a vehicle with two monitors that are “not ready” will
be accepted for the OBD test and the test can continue; for model year vehicles
2001 and newer, only one “not ready” monitor will be accepted for testing and
the test can continue. A vehicle that has more than the allowable number of
“not ready” monitors will FAIL Ontario
Even after
emissions related repairs are completed the vehicle may not pass until the
required monitors have been set to “ready” which may be accomplished by
performing a drive cycle specific to the vehicle.
