2006 DODGE POWER WAGON service indicator

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 driveable and not
need towing, see your dealer for service as soon as
possible.CAUTION!
Prolonged driving with the “Malfunction Indicator
Light” on could cause further damage to the emis-
sion control system. It could also affect fuel economy
and driveability. The vehicle must be serviced before
any emissions tests can be performed.
If the “Malfunction Indicator Light” is flashing,
severe catalytic converter damage and power loss
will soon occur. Immediate service is required.
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.
MAINTAINING YOUR VEHICLE 367
7

For states which have an I/M (Inspection and
Maintenance) requirement, this check verifies the
following: the MIL (Malfunction Indicator Lamp)
is functioning and is not on when the engine is running,
and that the OBD (On Board Diagnostic) system is ready
for testing.
Normally, the OBD system will be ready. The OBD
system maynotbe ready if your vehicle was recently
serviced, if you recently had a dead battery, or a battery
replacement. If the OBD 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 system is ready, you must do
the following:
1. Insert your ignition key into the ignition switch.2. Turn the ignition to the ON position, but do not crank
or start the engine.
3. If you crank or start the engine, you will have to start
this test over.
4. As soon as you turn your key to the ON position, you
will see your MIL symbol come on as part of a normal
bulb check.
5. Approximately 15 seconds later, one of two things will
happen:
a. The MIL light will blink for approximately 5 sec-
onds and then remain on until the first engine crank or
the key is turned off. This means that your vehicle’s
OBD system isnot readyand you shouldnotproceed
to the I/M station.
368 MAINTAINING YOUR VEHICLE

Cruise .............................. 176
Daytime Running...................... 124
Fog ..........................124,174,415
Four-Wheel Drive Indicator............... 290
Hazard Warning Flasher................. 346
Headlights........................... 123
High Beam........................127,169
High Beam Indicator.................... 169
High Beam/Low Beam Select............. 127
Instrument Cluster..................... 168
Intensity Control....................... 122
Interior..........................121,134
Lights On Reminder.................... 124
Passing............................. 126
Seat Belt Reminder..................... 169
Service...........................406,407
Transfer Case......................... 290
Transmission Warning................... 175
Turn Signal..................125,168,407,410Warning (Instrument Cluster Description)..... 168
Limited-Slip Differential................291,392
Loading Vehicle......................... 324
Tires ............................... 301
Locks................................. 17
Child Protection........................ 21
Door................................ 17
Ignition.............................. 15
Keys................................ 12
Power Door........................... 18
Steering Wheel......................... 15
Lower Anchors and Tether for CHildren (LATCH) . 62
Lubricants............................. 396
Lubrication, Body....................... 382
LugNuts ............................. 353
Lumbar Support........................ 116
Maintenance........................... 370
Maintenance Free Battery.................. 378
INDEX 459
10

Maintenance Procedures................... 370
Maintenance Schedule.................... 422
ScheduleA......................... 437
ScheduleB.......................... 425
Malfunction Indicator Light................ 368
Manual, Service......................... 448
Manual Transmission..................285,392
Fluid Level Check...................... 392
Lubricant Selection..................393,419
Mirrors ................................ 84
Automatic Dimming..................... 85
Electric Powered....................... 87
Outside.............................. 86
Rearview............................. 84
TrailerTowing ...................... 88,339
Modifications/Alterations, Vehicle............. 7
Mopar Parts.........................370,447
Multi-Displacement Engine System........... 296
Multi-Function Control Lever............... 125Noise Control
Maintenance.......................... 397
Tampering Prohibited................397,398
Noise Emission Warranty.................. 399
Occupant Restraints....................... 33
Octane Rating, Gasoline................... 317
Odometer..........................171,175
Trip .............................171,175
Off-Pavement Driving.................... 235
Off-Road Driving........................ 235
Oil, Engine.........................370,418
Capacity............................ 417
Change Interval....................... 371
Dipstick............................. 370
Disposal............................ 374
Filter ............................374,418
Filter Disposal........................ 374
Identification Logo..................... 373
460 INDEX