wiring DODGE RAM 4500 CHASSIS CAB 2009 4.G Owners Manual

Airbag System Components
The airbag system consists of the following:
•Occupant Restraint Controller (ORC)
•AIRBAG Readiness Light
•Driver Airbag
•Passenger Airbag (if equipped)
•Steering Wheel and Column
•Instrument Panel
•Crash Sensor
•Interconnecting Wiring
•Knee Impact Bolsters
•Passenger’s Side Front Airbag ON/OFF Switch (Regu-
lar Cab Vehicles Only ) (if equipped)
How The Airbag System Works
•
The Occupant Restraint Controller (ORC) determines
if a frontal collision is severe enough to require the
airbags to inflate.
•The ORC will not detect rollover, or rear collisions.
•The ORC also monitors the readiness of the electronic
parts of the system whenever the ignition switch is in
the START or RUN positions. These include all of the
items listed above except the knee bolsters, the instru-
ment panel, and the steering wheel and column. If the
key is in the OFF position, in the ACC position, or not
in the ignition, the airbags are not on and will not
inflate.
•The ORC also turns on the Airbag Warning Light in
the instrument panel for 6 to 8 seconds when the
ignition is first turned on, and then turns the light off.
THINGS TO KNOW BEFORE STARTING YOUR VEHICLE 51
2

Enhanced Accident Response System
If the airbags deploy after an impact and the electrical
system remains functional, vehicles equipped with
power door locks will unlock automatically. In addition,
approximately 10 seconds after the vehicle has stopped
moving, the interior lights will light until the ignition
switch is turned off.
Maintaining Your Airbag Systems
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 right side of the instrument panel. Do not
modify the front bumper, vehicle body structure,
or frame.
•You need proper knee impact protection in a
collision. Do not mount or locate any aftermarket
equipment on or behind the knee 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.
56 THINGS TO KNOW BEFORE STARTING YOUR VEHICLE

Turn Signals
Move the lever up or down to signal a right-hand or
left-hand turn.
The arrow on either side of the instrument cluster flashes
to indicate the direction of the turn, and proper operation
of the front and rear turn signal lights. If a defective bulb
or wiring circuit is detected for the turn signal system, the
arrow indicators will flash at a faster rate. If an indicator
fails to light when the lever is moved, it would suggest
that the switch or indicator lamp is defective.
You can signal a lane change by moving the lever
partially up or down.
Turn Signal Auto-Mode
Tap the multifunction lever once and the turn signal (left
or right) will flash three times, and automatically turn off.
Turn Signal Lever
UNDERSTANDING THE FEATURES OF YOUR VEHICLE 127
3

WARNING!
•Do not connect trailer brakes to your vehicle’s
hydraulic brake lines. It can overload your brake
system 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
distance. When towing you should allow for addi-
tional space between your vehicle and the vehicle
in front of you. Failure to do so could result in an
accident.
Towing Requirements — Trailer Lights & Wiring
Whenever you pull a trailer, regardless of the trailer size,
stop lights and turn signals on the trailer are required for
motoring safety.
Twelve trailer tow circuits are provided at the rear of the
chassis. These circuits are unterminated and sealed.Seven of the 12 circuits are the standard 7-pin trailer
wiring circuits. Three of the 12 circuits are upfitter
circuits used for aftermarket applications. Two of the 12
circuits are additional trailer circuits. For additional
information about trailer tow circuits or other exterior
lighting capabilities of your vehicle, refer to the Body
Builder’s Guide by accessing “www.dodge.com/
bodybuilder” and choosing the appropriate links.
NOTE:
Do not cut or splice wiring into the vehicles
wiring harness.
WARNING!
Any work done to the vehicle’s electrical system or
wiring should be performed by a qualified automo-
tive technician. If done improperly it may cause
damage to the electrical system wiring and could
result in serious or fatal injury.
298 STARTING AND OPERATING

Traction.............................. 250
Traction Control ......................... 356
Trailer Towing .......................... 289
Cooling System Tips .................... 300
Hitches ............................. 292
Minimum Requirements ................. 295
Mirrors .............................. 84
Trailer and Tongue Weight ............... 294
Wiring .............................. 298
Trailer Towing Guide ..................... 293
Trailer Weight .......................... 293
Transaxle Automatic ............................ 12
Transfer Case Electronically Shifted ................. 234,242
Fluid ............................... 379
Transmission Automatic ........................ 224,356
Fluid ............................... 379 Maintenance
......................... 356
Shifting ............................. 224
Transmitter Programming
(Remote Keyless Entry) .................... 24
Tread Wear Indicators .................... 273
Trip Computer .......................... 136
Trip Odometer ....................... 166,171
Turn Signals ...................... 127,162,370
UConnect (Hands-Free Phone) .............. 86
Uniform Tire Quality Grades ................ 406
Variance, Compass ....................... 143
Vehicle Identification Number (VIN) ............ 7
Vehicle Loading ...................... 262,287
Vehicle Modifications/Alterations .............. 7
Vehicle Storage ......................... 369
Video Entertainment System™
(Rear Seat Video System) .................. 201
Voltmeter ............................. 162
424 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.