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 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 damage and power loss
will soon occur. Immediate service is required.
Loose Fuel Filler Cap
If the vehicle diagnostic system determines that the fuel
filler cap is loose, improperly installed, or damaged, a
”gASCAP” message will display in the odometer or a
“Check Gascap” message will display in the Electronic
Vehicle Information Center (EVIC) (if equipped). If this
occurs, tighten the fuel filler cap properly and press the
438 MAINTAINING YOUR VEHICLE
Trip Odometer button to turn off the message. If the
problem continues, 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 may
notbe 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 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 switch to the ON position, 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 switch to the ON position, you will see the MIL symbol come on as part
of a normal bulb check.
7
MAINTAINING YOUR VEHICLE 439
Severe Duty All Models
Change Engine Oil at 4000 miles (6,500 km) if the vehicle
is operated in a dusty and off road environment. This
type of vehicle use is considered Severe Duty
Once A Month Or Before A Long Trip:
•Check engine oil level
• Check windshield washer fluid level
• Check tire pressure and look for unusual wear or
damage. Rotate tires at the first sign of irregular wear,
even if it occurs before your next scheduled service.
• Check the fluid levels of the coolant reservoir, brake
master cylinder, and power steering and fill as needed.
• Check function of all interior and exterior lights Required Maintenance Intervals.
Refer to the maintenance schedules on the following
page for the required maintenance intervals.
At Every Oil Change Interval As Indicated By Oil
Change Indicator System:
•Change oil and filter
•
Rotate the tires.Rotate at the first sign of irregular
wear, even if it occurs before your next scheduled service
• Inspect battery and clean and tighten terminals as
required
• Inspect brake pads, shoes, rotors, drums, hoses
and park brake
•
Inspect engine cooling system protection and hoses
• Inspect exhaust system
• Inspect engine air cleaner if using in dusty or
off-road conditions8
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SMAINTENANCE SCHEDULES 497
Capacities, Fluid......................... .491
Caps, Filler Fuel ................................ .376
Oil (Engine) .......................... .445
Radiator (Coolant Pressure) ................460
Carbon Monoxide Warning ...................98
Cargo (Vehicle Loading) ....................379
Car Washes ............................ .469
Cellular Phone .......................... .276
Center High Mounted Stop Light ..............489
Certification Label ........................ .379
Chains, Tire ............................ .359
Changing A Flat Tire ...................... .412
Chart, Tire Sizing ........................ .337
Check Engine Light (Malfunction Indicator Light) . .439
Checking Your Vehicle For Safety ...............97
Checks, Safety ............................97
Child Restraint ............................73
Child Restraints Child Seat Installation
.....................92
Install A LATCH-compatible Child Restraint .....87
Installing Child Restraints Using The Vehicle Seat
Belt ..................................89
Lower Anchors And Tethers For Children .......81
Clean Air Gasoline ....................... .373
Cleaning Wheels .............................. .470
Climate Control ......................... .276
Clock ................................. .241
Cold Weather Operation ....................296
Compact Disc (CD) Maintenance ..............275
Compact Spare Tire ....................... .354
Compass .............................. .231
Compass Calibration ...................... .232
Compass Variance ........................ .232
Computer, Trip/Travel ..................... .227
Connector UCI................................ .265
518 INDEX
DisposalAntifreeze (Engine Coolant) ................460
Door Locks Door Locks ............................33
KeyFob...............................33
Remote ...............................33
Remote Keyless Entry (RKE) ................33
Door Locks, Automatic ......................35
Door Opener, Garage ...................... .185
Driving Through Flowing, Rising, or Shallow Standing
Water ............................... .317
Driving to Achieve Maximum Fuel Economy ......227
Electrical Power Outlets .....................197
Electric Remote Mirrors .....................111
Electronic Brake Control System ...............327
Electronic Power Distribution Center (Fuses) ......478
Electronic Speed Control (Cruise Control) ........172Electronic Stability Control (ESC)
..............331
Electronic Throttle Control Warning Light ........211
Electronic Vehicle Information Center (EVIC) ......221
Emergency Deck Lid Release ..................44
Emergency, In Case of Freeing Vehicle When Stuck ................426
Hazard Warning Flasher ..................399
Jacking .............................. .412
Jump Starting ......................... .421
Overheating .......................... .399
Towing ............................. .429
Emergency Trunk Release ....................44
Emission Control System Maintenance ..........439
Engine ................................ .437
Air Cleaner .......................... .446
Block Heater ......................... .299
Break-In Recommendations .................96
Checking Oil Level ..................... .442
Compartment ......................... .436
520 INDEX
Fluid, Brake............................ .494
Fluid Capacities ......................... .491
Fluid Leaks ............................ .101
Fluid Level Checks Automatic Transmission ..................467
Brake ............................... .463
Cooling System ........................ .456
Engine Oil ........................... .442
Fluids, Lubricants and Genuine Parts ...........492
Fog Lights ............................. .164
Folding Rear Seat ........................ .157
Freeing A Stuck Vehicle .....................426
Fuel .................................. .371
Adding ............................. .376
Additives ............................ .375
Clean Air ............................ .373
Conserving ........................... .227
Ethanol ............................. .373
Filler Cap (Gas Cap) .....................376 Gasoline
............................. .371
Gauge .............................. .210
Materials Added ....................... .375
Methanol ............................ .373
Octane Rating ......................... .371
Requirements ......................... .371
Saver Mode .......................... .227
Specifications ......................... .492
Tank Capacity ......................... .491
Fueling ............................... .376
Fuel Optimizer .......................... .227
Fuel Saver ............................. .227
Fuel System Caution ...................... .377
Fuses ................................. .474
Garage Door Opener (HomeLink®) ............185
Gas Cap (Fuel Filler Cap) ...................376
Gasoline,
Clean Air ....................... .373
Gasoline (Fuel) .......................... .371
522 INDEX
High Beam Indicator.....................215
High Beam/Low Beam Select ...............166
Illuminated Entry ........................22
Instrument Cluster ..................... .161
Intensity Control ....................... .167
Interior ............................. .167
License ............................. .489
Lights On Reminder .....................164
Low Fuel ............................ .220
Malfunction Indicator (Check Engine) .........220
Map Reading ......................... .166
Oil Pressure .......................... .214
Parade Mode (Daytime Brightness) ...........168
Passing ............................. .166
Reading ............................. .166
Seat Belt Reminder ..................... .215
Security Alarm ........................ .218
Service .............................. .484
Service Engine Soon (Malfunction Indicator) . . . .220 Tire Pressure Monitoring (TPMS)
............218
Traction Control ....................... .335
Turn Signal .......................... .101
Vanity Mirror ..........................112
Voltage ............................. .210
Warning (Instrument Cluster Description) ......210
Loading Vehicle ......................... .379
Capacities ........................... .380
Tires ............................... .343
Locks ..................................33
Automatic Door .........................35
Auto Unlock ...........................35
Door .................................33
Power Door ............................34
Low Tire Pressure System ...................362
Lubrication, Body ........................ .452
Lug Nuts .............................. .410
Maintenance Free Battery ................... .447
526 INDEX
Maintenance Procedures....................441
Maintenance Schedule ..................... .496
Malfunction Indicator Light (Check Engine) .......220
Manual, Service ......................... .512
Manual Transmission ..................... .299
Fluid Level Check ...................... .465
Map/Reading Lights ...................... .166
Master Cylinder (Brakes) ....................463
Methanol .............................. .373
Mini-Trip Computer ...................... .227
Mirrors ............................... .108
Automatic Dimming .....................109
Electric Powered ........................111
Electric Remote .........................111
Exterior Folding ........................110
Heated ...............................112
Outside ..............................110
Rearview ............................ .108
Vanity ...............................112 Mode
Fuel Saver ........................... .227
Modifications/Alterations, Vehicle ...............7
Monitor, Tire Pressure System ................362
Mopar Parts ............................ .440
MTBE/ETBE ........................... .373
Multi-Function Control Lever .................165
New Vehicle Break-In Period ..................96
Occupant Restraints ........................45
Occupant Restraints (Sedan) ..................62
Octane Rating, Gasoline (Fuel) ................371
Odometer .............................. .210
Trip ................................ .210
Oil Change Indicator ...................... .225
Oil Change Indicator, Reset ..................225
Oil, Engine ............................. .442
Capacity ............................ .491
10
INDEX 527