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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” (MIL).
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 MIL 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 performed.
•If the MIL is flashing while the engine is running,
severe catalytic converter damage and power loss
will soon occur. Immediate service is required.
Loose Fuel Filler Cap Message
If the vehicle diagnostic system determines that the fuel
filler cap is loose, improperly installed, or damaged, the
word “gASCAP” will display in the odometer. If this
occurs, tighten the fuel filler cap until a “clicking” sound7
MAINTAINING YOUR VEHICLE 527
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is heard and press the TRIP ODOMETER button to turn
off the message. If the problem persists, the message will
appear the next time the vehicle is started.
A loose, improperly installed, or damaged fuel filler cap
may also turn on the MIL.
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 that require an Inspection and Mainte-
nance (I/M), this check verifies the “Malfunction
Indicator Light (MIL)” is functioning and is not
on when the engine is running, and that the OBD II
system is ready for testing.Normally, the OBD II system will be ready. The OBD II
system maynotbe ready if your vehicle was recently
serviced, recently had a dead battery or a battery replace-
ment. 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. Turn the ignition switch to the ON position, but do not
crank or start the engine.
2. If you crank or start the engine, you will have to start
this test over.
3. As soon as you turn the ignition switch to the ON
position, you will see the MIL symbol come on as part
of a normal bulb check.
528 MAINTAINING YOUR VEHICLE
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CAUTION!(Continued)
•Your vehicle has been built with improved fluids
that protect the performance and durability of your
vehicle and also allow extended maintenance inter-
vals. Do not use chemical flushes in these compo-
nents as the chemicals can damage your engine,
transmission, power steering or air conditioning.
Such damage is not covered by the New Vehicle
Limited Warranty. If a flush is needed because of
component malfunction, use only the specified
fluid for the flushing procedure.
Engine Oil
Checking Oil Level
To assure proper engine lubrication, the engine oil must
be maintained at the correct level. Check the oil level at
regular intervals, such as every fuel stop. The best time tocheck the engine oil level is about five minutes after a
fully warmed engine is shut off. Do not check oil level
before starting the engine after it has sat overnight.
Checking engine oil level when the engine is cold will
give you an incorrect reading.
Checking the oil while the vehicle is on level ground and
only when the engine is hot, will improve the accuracy of
the oil level readings. Maintain the oil level between the
range markings on the dipstick. Either the range mark-
ings consist of a crosshatch zone marked SAFE or a
crosshatch zone marked with MIN at the low end of the
range and MAX at the high end of the range. Adding
1.0 qt (1.0 l) of oil when the reading is at the low end of
the range marking will raise the oil level to the high end
of the range marking.
7
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CAUTION!
Do not use chemical flushes in your engine oil as the
chemicals can damage your engine. Such damage is
not covered by the New Vehicle Limited Warranty.
Engine Oil Viscosity – 2.4L Engine
SAE 5W-20 engine oil is recommended for all operating
temperatures. This engine oil improves low temperature
starting and vehicle fuel economy.
The engine oil filler cap also shows the recommended
engine oil viscosity for your engine. For information on
the engine oil filler cap location, refer to “Engine Com-
partment” in “Maintaining Your Vehicle” for further
information.
Lubricants that do not have both, the engine oil certifi-
cation mark and the correct SAE viscosity grade number
should not be used.
Engine Oil Viscosity – 3.6L Engine
SAE 5W-20 engine oil is recommended for all operating
temperatures. This engine oil improves low temperature
starting and vehicle fuel economy.
The engine oil filler cap also shows the recommended
engine oil viscosity for your engine. For information on
engine oil filler cap location, refer to the “Engine Com-
partment” illustration in this section.
Synthetic Engine Oils
You may use synthetic engine oils provided the recom-
mended oil quality requirements are met, and the recom-
mended maintenance intervals for oil and filter changes
are followed.
7
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CAUTION!
•The catalytic converter requires the use of un-
leaded fuel only. Leaded gasoline will destroy the
effectiveness of the catalyst as an emissions control
device and may seriously reduce engine perfor-
mance and cause serious damage to the engine.
•Damage to the catalytic converter can result if your
vehicle is not kept in proper operating condition.
In the event of engine malfunction, particularly
involving engine misfire or other apparent loss of
performance, have your vehicle serviced promptly.
Continued operation of your vehicle with a severe
malfunction could cause the converter to overheat,
resulting in possible damage to the converter and
vehicle.Under normal operating conditions, the catalytic con-
verter will not require maintenance. However, it is
important to keep the engine properly tuned to assure
proper catalyst operation and prevent possible catalyst
damage.
NOTE:Intentional tampering with emissions control
systems can result in civil penalties being assessed
against you.
In unusual situations involving grossly malfunctioning
engine operation, a scorching odor may suggest severe
and abnormal catalyst overheating. If this occurs, stop
the vehicle, turn off the engine and allow it to cool.
Service, including a tune-up to manufacturer’s specifica-
tions, should be obtained immediately.
7
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CavityCar-
tridge
FuseMini-
FuseDescription
F139 40 Amp
GreenClimate Control
System Blower
F140 30 Amp
PinkPower Locks
F141 40 Amp
GreenAnti-Lock Brake
System
F142 40 Amp
GreenGlow Plugs –
If Equipped
F143 40 Amp
GreenExterior Lights 1
F144 40 Amp
GreenExterior Lights 2
F145 30 Amp
PinkTo Body Computer –
LampCavityCar-
tridge
FuseMini-
FuseDescription
F146 30 Amp
PinkSpare
F147 30 Amp
PinkSpare
F148 40 Amp
GreenRadiator Fan Motor
F149 30 Amp
PinkStarter Solenoid
F150 25 Amp
NaturalPowertrain Control
Modules
F151 30 Amp
PinkHeadlamp Washer
Motor – If Equipped
F152 25 Amp
NaturalDiesel Fuel Heater –
If Equipped
7
MAINTAINING YOUR VEHICLE 569
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CavityCar-
tridge
FuseMini-
FuseDescription
F153 20 Amp
YellowFuel Pump
F156 10 Amp
RedBrake/Electronic Sta-
bility Control Module
F157 10 Amp
RedTransfer Case Module
– If Equipped
F158 10 Amp
RedActive Hood Module
– If Equipped
F159 10 Amp
RedSpare
F160 20 Amp
YellowInterior Lights
F161 20 Amp
YellowHornCavityCar-
tridge
FuseMini-
FuseDescription
F162 50 Amp
RedCabin Heater #1/
Vacuum Pump –
If Equipped
F163 50 Amp
RedCabin Heater #2 –
If Equipped
F164 25 Amp
NaturalPowertrain Auto
Shutdown
F165 20 Amp
YellowPowertrain Shutdown
F166 20 Amp
YellowSpare
F167 30 Amp
GreenPowertrain Shutdown
570 MAINTAINING YOUR VEHICLE
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FLUID CAPACITIES
U.S. Metric
Fuel (Approximate)
Front Wheel Drive (FWD) Models 20.5 Gallons 77.6 Liters
All-Wheel Drive Models 21 Gallons 79.8 Liters
Engine Oil With Filter
2.4L Engine (SAE 5W-20, API Certified) 4.5 Quarts 4.26 Liters
3.6L Engine (SAE 5W-20, API Certified) 6 Quarts 5.6 Liters
580 MAINTAINING YOUR VEHICLE