the on-board diagnostic (OBD-II)
system. If your “check
engine/service engine soon” light is
on, reference the applicable light
description in the Warning Lights
and Gauges section of your
owners guide. Your vehicle may
not pass the I/M test with the
“check engine/service engine soon”
light on.
If the vehicle’s powertrain system
or its battery has just been
serviced, the OBD-II system is
reset to a “not ready for I/M test”
condition. To ready the OBD-II
system for I/M testing, a minimum
of 30 minutes of city and highway
driving is necessary as described
below:
• First, at least ten minutes of
driving on an expressway or
highway.
• Next, at least twenty minutes
driving in stop and go, city type
traffic with at least four idle
periods.
Allow the vehicle to sit for at least
8 hours without starting the
engine. Then, start the engine and
complete the above driving cycle.
The engine must warm up to it’s
normal operating temperature.
Once started, do not turn off the
engine until the above driving
cycle is complete.
Maintenance and care
209
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