MAINTAINING YOUR VEHICLE
253
ONBOARD DIAGNOSTIC SYSTEM — OBD II
CAUTIO N!
Your vehicle is equ ipped with a sop histicated onboard
diagnostic system called OBD II. This system monitors
the perform ance of the emissions, engine, and autom atic
transm ission control system s. When these system s are
operating prop erly, you r vehicle will provid e excellent
perform ance and fuel econom y, as well as engine emis-
sions well within current governm ent regu lations.
•
Prolon ged drivin g with the “Malfu nction Indica-
tor Ligh t” on could cause furth er damage to the
emission control system . It could also affect fuel
econ omy and driveab ility. The veh icle must be
serviced before any emission s tests can be per-
form ed.
If any of these system s requ ire service, the OBD II system
will turn on the “Malfu nction Ind icator Light.” It will
also store diagnostic codes and other inform ation to
assist you r service technician in making rep airs. Al-
thou gh you r vehicle will usually be drivable and not
need tow ing, see you r dealer for service as soon as
possible.
• wIfhthilee th“Me alfuenginnctione is ruInndnicatoring, severeLigh t”catalyticis flashconing-
verter damage and power loss will soon occur.
Immediate service is req uired .
7
| Categories | Jeep Grand Cherokee Manuals, Jeep Manuals |
|---|---|
| Model Year | 2004 |
| Download File |
|
| Document File Type | |
| Copyright | Attribution Non-commercial |
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