ONBOARD DIAGNOSTIC SYSTEM — OBD II
Your vehicle is equipped with a sophisticated onboard
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 emis-
sions well within current government regulations.
If any of these systems require service, the OBD II system
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
soon as possible.
CAUTION!
•
Prolonged driving with the “Malfunction Indica-
tor Light” on could cause further damage 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
while the engine is running, severe catalytic con-
verter damage and power loss will soon occur.
Immediate service is required.
MAINTAINING YOUR VEHICLE
379
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Summary of Contents for 2008 Wrangler
Page 1: ...Wrangler O W N E R S M A N U A L 2 0 0 8 ...
Page 3: ......
Page 8: ...INTRODUCTION 7 1 ...
Page 79: ......
Page 201: ......
Page 206: ...INSTRUMENT CLUSTER UNDERSTANDING YOUR INSTRUMENT PANEL 205 4 ...
Page 321: ...320 STARTING AND OPERATING ...
Page 379: ...ENGINE COMPARTMENT 3 8L 378 MAINTAINING YOUR VEHICLE ...
Page 446: ...INDEX 10 ...
Page 466: ......