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MAINTAINING YOUR VEHICLE
ONBOARD DIAGNOSTIC SYSTEM — OBD II
CAUTION!
Your vehicle is equipped with a sophisticated onboard
diagnostic system called OBD II. This system monitors
theperformanceoftheemissions,engine,andautomatic
transmission control systems. When these systems are
operating properly, your vehicle will provide excellent
performance and fuel economy, as well as engine emis-
sionswellwithincurrentgovernmentregulations.
• torProlongedLight” ondrivingcouldwithcausethefurther“MalfunctiondamageIndica-to the
emission control system. It could also affect fuel
economy and drivability. The vehicle must be
serviced before any emissions tests can be per-
formed.
•
If the “Malfunction Indicator Light” is flashing
whiletheengineisrunning,severecatalyticcon-
verter damage and power loss will soon occur.
Immediateserviceisrequired.
Ifanyofthesesystemsrequireservice,theOBDIIsystem
will turn on the “Malfunction Indicator Light.” It will
also store diagnostic codes and other information to
assist your service technician in making repairs. Al-
though your vehicle will usually be drivable and not
need towing, see your authorized dealer for service as
soonaspossible.
Loose Fuel Filler Cap Message
After fuel is added, the vehicle diagnostic system can
determine if the fuel filler cap is loose, improperly
installed, or damaged. A “CHECK GASCAP” message
willbedisplayedintheEVIC(RefertoSection4ofthis
| Categories | Jeep Grand Cherokee Manuals, Jeep Manuals |
|---|---|
| Model Year | 2009 |
| Download File |
|
| Document File Type | |
| Copyright | Attribution Non-commercial |
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