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ONBOARD DIAGNOSTIC
SYSTEM — OBD II
Your vehicle is equipped with a sophisticated on-
board diagnostic system called OBD II. This system
monitors the performance of the emissions, engine,
and automatic transmission control systems. When
these systems are operating properly, your vehicle
will provide excellent performance and fuel
economy, as well as engine emissions well within
current government regulations.
If any of these systems require service, the OBD
II system will turn on the "Malfunction Indicator
Light (MIL)". It will also store diagnostic codes
and other information to assist your service
technician in making repairs. Although your ve-
hicle will usually be drivable and not need
towing, see your authorized dealer for service
as soon as possible.
CAUTION!
• Prolonged driving with the MIL on could
cause further damage to the emissions
control system. It could also affect fuel
economy and driveability. The vehicle must
be serviced before any emissions tests can
be performed.
• If the MIL is flashing while the engine is
running, severe catalytic converter dam-
age and power loss will soon occur. Imme-
diate service is required.
Onboard Diagnostic System (OBD II)
Cybersecurity
Your vehicle is required to have an Onboard
Diagnostic system (OBD II) and a connection
port to allow access to information related to the
performance of your emissions controls. Autho-
rized service technicians may need to access
this information to assist with the diagnosis and
service of your vehicle and emissions system.
WARNING!
• ONLY an authorized service technician
should connect equipment to the OBD II
connection port in order to diagnose or
service your vehicle.
• If unauthorized equipment is connected to
the OBD II connection port, such as a
driver-behavior tracking device, it may:
• Be possible that vehicle systems, includ-
ing safety related systems, could be
impaired or a loss of vehicle control
could occur that may result in an acci-
dent involving serious injury or death.
• Access, or allow others to access, infor-
mation stored in your vehicle systems,
including personal information.
For further information, refer to "Privacy Prac-
tices — If Equipped With Uconnect 8.4 Radio"
and "Uconnect CyberSecurity" in "All About
Uconnect Access" in your Owner's Manual Ra-
dio Supplement and "Cybersecurity" in "Under-
standing Your Instrument Panel".
EMISSIONS INSPECTION AND
MAINTENANCE PROGRAMS
In some localities, it may be a legal requirement
to pass an inspection of your vehicle's emis-
sions control system. Failure to pass could
prevent vehicle registration.
Normally, the OBD II system will be
ready. The OBD II system may not be
ready if your vehicle was recently ser-
viced, or 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 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. Cycle the ignition to the ON mode, but do not
crank or start the engine.
NOTE:
If you crank or start the engine, you will have to
start this test over.
2. As soon as you cycle the ignition to the ON
mode, you will see the "Malfunction Indicator
Light (MIL)" symbol come on as part of a
normal bulb check.
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