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EMISSIONS INSPECTION AND MAINTENANCE
PROGRAMS
In some localities, it may be a legal requirement to pass
an inspection of your vehicle’s emissions control system.
Failure to pass could prevent vehicle registration.
For states which have an I/M (Inspection and
Maintenance) requirement, this check verifies
the following: the CHECK ENGINE Light is functioning
and is not on when the engine is running, and that the
Onboard Diagnostic system (OBD II) is ready for testing.
Normally, the OBD II system will be ready. The OBD II
system may not be ready if your vehicle was recently
serviced, if you recently had a dead battery, or a battery
replacement. If the OBD II system should be determined
not ready for the I/M test, your vehicle may fail the test.
Your vehicle has a simple ignition key actuated test
which you can use prior to going to the test station. To
check if your vehicle’s OBD II system is ready, you must
do the following:
1. Insert your ignition key into the ignition switch.
2. Turn the ignition to the ON/RUN position, but do not
crank or start the engine.
3. If you crank or start the engine, you will have to start
this test over.
4. As soon as you turn your key to the ON/RUN
position, you will see your CHECK ENGINE light come
on as part of a normal bulb check.
5. Approximately 15 seconds later, one of two things will
happen:
a. The CHECK ENGINE light will flash for about 10
seconds and then return to being fully illuminated
262 MAINTAINING YOUR VEHICLE
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