2009 JEEP COMPASS wiring

Airbag System Components
The airbag system consists of the following:
•Occupant Restraint Controller (ORC)
•Side Remote Acceleration Sensors (if equipped)
•Airbag Warning Light
•Driver Airbag
•Front Passenger Airbag
•Supplemental Side Curtain Airbags above side win-
dows (if equipped)
•Steering Wheel and Column
•Instrument Panel
•Interconnecting Wiring
•Seat Belt Reminder Light
•Knee Impact Bolsters
•Front Acceleration Sensors
•Driver and Front Passenger Seat Belt Pretensioners
How The Airbag System Works
•
TheOccupant Restraint Controller (ORC)determines
if a frontal collision is severe enough to require the
airbags to inflate. The front airbag inflators are de-
signed to provide different rates of airbag inflation
from direction provided by the ORC. This ORC will
detect rollover.
•The ORC also monitors the readiness of the electronic
parts of the system whenever the ignition switch is in
the START or ON positions. These include all of the
items listed above except the knee impact bolster, the
instrument panel, and the steering wheel and column.
If the key is in the LOCK position, in the ACC position,
or not in the ignition, the airbags are not on and will
not inflate.
THINGS TO KNOW BEFORE STARTING YOUR VEHICLE 53
2

Maintaining Your Airbag System
WARNING!
•Modifications to any part of the airbag system
could cause it to fail when you need it. You could
be injured because the airbags are not there to
protect you. Do not modify the components or
wiring, including adding any kind of badges or
stickers to the steering wheel hub trim cover or the
upper passenger side of the instrument panel. Do
not modify the front bumper, vehicle body struc-
ture, or frame.
•You need proper knee impact protection in a
collision. Do not mount or locate any aftermarket
equipment on or behind the knee impact bolster.
•It is dangerous to try to repair any part of the
airbag system yourself. Be sure to tell anyone who
works on your vehicle that it has airbags.
Airbag Warning Light
You will want to have the airbags ready to
inflate for your protection in an impact. While
the airbag system is designed to be mainte-
nance free, if any of the following occurs, have
an authorized dealer service the system promptly:
•The Airbag Warning Light does not come on or flickers
during the six to eight seconds when the ignition
switch is first turned on.
•The light remains on or flickers after the six to eight
second interval.
•The light flickers or comes on and remains on while
driving.
THINGS TO KNOW BEFORE STARTING YOUR VEHICLE 57
2

CAUTION!
If the trailer weighs more than 1,000 lbs (454 kg)
loaded, it should have its own brakes and they
should be of adequate capacity. Failure to do this
could lead to accelerated brake lining wear, higher
brake pedal effort, and longer stopping distances.
WARNING!
Do not connect trailer brakes to your vehicle’s hy-
draulic brake lines. It can overload your brake sys-
tem and cause it to fail. You might not have brakes
when you need them and could have an accident.
Towing any trailer will increase your stopping dis-
tance. When towing you should allow for additional
space between your vehicle and the vehicle in front
of you. Failure to do so could result in an accident.
Towing Requirements — Trailer Lights and Wiring
Whenever you pull a trailer, regardless of the trailer size,
stop lights and turn signals on the trailer are required for
motoring safety.
The Trailer Tow Package may include a 4- and 7-pin
wiring harness. Use a factory approved trailer harness
and connector.
NOTE:Do not cut or splice wiring into the vehicles
wiring harness.
The electrical connections are all complete to the vehicle
but you must mate the harness to a trailer connector.
Refer to the following illustrations.
324 STARTING AND OPERATING

Compact Spare........................ 292
Flat Changing........................ 337
General Information.................... 288
High Speed.......................... 291
Inflation Pressures..................... 289
Jacking............................. 332
Life of Tires.......................... 294
Load Capacity........................ 284
Pressure Monitor System (TPMS)........... 298
Pressure Warning Light.................. 169
Quality Grading....................... 414
Radial.............................. 291
Replacement......................... 295
Rotation............................. 297
Safety...........................279,288
Sizes............................... 281
Snow Tires........................... 297
Spare Tire........................... 333
Spinning............................ 293Tread Wear Indicators................... 294
Tongue Weight/Trailer Weight.............. 320
Towing............................... 316
24-Hour Towing Assistance................ 94
Disabled Vehicle....................... 341
Guide.............................. 319
Recreational.......................... 327
Weight.............................. 319
Towing Assistance........................ 94
Trailer Towing.......................... 316
Cooling System Tips.................... 326
Hitches............................. 318
Minimum Requirements................. 321
Trailer and Tongue Weight................ 320
Wiring.............................. 324
Trailer Towing Guide..................... 319
Trailer Weight.......................... 319
Transaxle............................. 256
Automatic....................12,251,256,366
432 INDEX

INSTALLATION OF RADIO TRANSMITTING
EQUIPMENT
Special design considerations are incorporated into this
vehicle’s electronic system to provide immunity to radio
frequency signals. Mobile two-way radios and telephone
equipment must be installed properly by trained person-
nel. The following must be observed during installation.
The positive power connection should be made directly
to the battery and fused as close to the battery as possible.
The negative power connection should be made to body
sheet metal adjacent to the negative battery connection.
This connection should not be fused.
Antennas for two-way radios should be mounted on the
roof or the rear area of the vehicle. Care should be used
in mounting antennas with magnet bases. Magnets may
affect the accuracy or operation of the compass on
vehicles so equipped. The antenna cable should be as short as practical and
routed away from the vehicle wiring when possible. Use
only fully shielded coaxial cable.
Carefully match the antenna and cable to the radio to
ensure a low Standing Wave Ratio (SWR).
Mobile radio equipment with output power greater than
normal may require special precautions.
All installations should be checked for possible interfer-
ence between the communications equipment and the
vehicle’s electronic systems.