2016 Ram 1500 wiring

Enhanced Accident Response System
In the event of an impact, if the communication network
remains intact, and the power remains intact, depending
on the nature of the event, the ORC will determine
whether to have the Enhanced Accident Response Sys-
tem perform the following functions:
•Cut off fuel to the engine.
•Flash hazard lights as long as the battery has power or
until the hazard light button is pressed. The hazard
lights can be deactivated by pressing the hazard light
button.
•Turn on the interior lights, which remain on as long as
the battery has power.
•Unlock the power door locks.
Enhanced Accident Response System Reset
Procedure
In order to reset the Enhanced Accident Response System
functions after an event, the ignition switch must be
changed from ignition START or ON/RUN to ignition
OFF. Carefully check the vehicle for fuel leaks in the
engine compartment and on the ground near the engine
compartment and fuel tank before resetting the system
and starting the engine.
Air Bag Warning Light
The air bags must be ready to inflate for your protection
in a collision. The Occupant Restraint Control-
ler (ORC) monitors the internal circuits and
interconnecting wiring associated with air bag
system electrical components.
The ORC monitors the readiness of the electronic parts of
the air bag system whenever the ignition switch is in the
START or ON/RUN position. If the ignition switch is in
80 THINGS TO KNOW BEFORE STARTING YOUR VEHICLE

WARNING!
Ignoring the Air Bag Warning Light in your instru-
ment panel could mean you won’t have the air bags
to protect you in a collision. If the light does not come
on as a bulb check when the ignition is first placed in
the on position, and stays on after you start the
vehicle, or if it comes on as you drive, have an
authorized dealer service the air bag system immedi-
ately.
Maintaining Your Air Bag System
WARNING!
•Modifications to any part of the air bag system
could cause it to fail when you need it. You could
be injured if the air bag system is not there to
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WARNING!(Continued)
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
add aftermarket side steps or running boards.
•It is dangerous to try to repair any part of the air
bag system yourself. Be sure to tell anyone who
works on your vehicle that it has an air bag system.
•Do not attempt to modify any part of your air bag
system. The air bag may inflate accidentally or may
not function properly if modifications are made.
Take your vehicle to an authorized dealer for any
air bag system service. If your seat, including your
trim cover and cushion, needs to be serviced in any
way (including removal or loosening/tightening of
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82 THINGS TO KNOW BEFORE STARTING YOUR VEHICLE

3. Disconnect the chassis wiring harness, ensuring the
connector bracket does not fall into the sill.
4. Connect the chassis plug and bracket (provided in the
glove box) to the chassis wiring harness and insert the
bracket back into the sill.5. Connect the tailgate plug (provided in the glove box)
to the tailgate wiring harness to ensure that the
terminals do not corrode.
6. Tape the tailgate harness and bracket against the
forward-facing surface of the tailgate. This will pre-
vent damaging the connector and bracket when stor-
ing or reinstalling the tailgate.
Removing The Tailgate
1. Disconnect the wiring harness for the rear camera and
or power locks (if equipped), refer to “Disconnecting
the Rear Camera — If Equipped” in this section.
2. Unlatch the tailgate and remove the support cables by
releasing the lock tang from the pivot.
NOTE:Make sure tailgate is supported when removing
support cables.
Locking Tab
274 UNDERSTANDING THE FEATURES OF YOUR VEHICLE

System Malfunction
If there is a malfunction in the STOP/START system, the
system will not shut down the engine. A SERVICE
STOP/START SYSTEM message will appear in the Elec-
tronic Vehicle Information Center (EVIC)/Driver Infor-
mation Display (DID). Refer to “Electronic Vehicle Infor-
mation Center (EVIC) or Driver Information Display
(DID)” in “Electronics” for further information.
The system will need to be checked by your authorized
dealer.
ENGINE BLOCK HEATER — IF EQUIPPED
The engine block heater warms the engine, and permits
quicker starts in cold weather. Connect the cord to a
standard 110-115 Volt AC electrical outlet with a
grounded, three-wire extension cord.1500 Models
The engine block heater cord is routed under the hood on
the passenger side of the vehicle near the right head lamp
assembly. It is located between the front grill and the
radiator, but underneath the black upper seal.
2500/3500 Models
The engine block heater cord is routed through the grille
by the right front tow hook.
It includes a removable cap that is secured by a tethered
strap. It also has a c-clip that is used for storage when not
in use for the winter months. During winter months,
remove the heater cord wiring assembly from itself on
the c-clip.
The engine block heater must be plugged in at least one
hour to have an adequate warming effect on the engine.
486 STARTING AND OPERATING

The user interface consists of the following:
Manual Brake Control Lever
Slide the manual brake control lever to the left to activate
power to the trailer’s electric brakes independent of the
tow vehicle’s brakes. If the manual brake control lever is
activated while the brake is also applied, the greater of
the two inputs determines the power sent to the trailer
brakes.
The trailer and the vehicle’s brake lamps will come on
when either vehicle braking or manual trailer brakes are
applied.
Trailer Brake Status Indicator Light
This light indicates the trailer electrical connection status.
If no electrical connection is detected after the ignition is
turned on, pushing the GAIN adjustment button orsliding the manual brake control lever will display the
GAIN setting for 10 seconds and the “Trailer Brake Status
Indicator Light” will not be displayed.
If a fault is detected in the trailer wiring or the Integrated
Trailer Brake Module (ITBM), the “Trailer Brake Status
Indicator Light” will flash.
GAIN Adjustment Buttons (+/-)
Pushing these buttons will adjust the brake control
power output to the trailer brakes in 0.5 increments. The
GAIN setting can be increased to a maximum of 10 or
decreased to a minimum of 0 (no trailer braking).
GAIN
The GAIN setting is used to set the trailer brake control
for the specific towing condition and should be changed
as towing conditions change. Changes to towing condi-
tions include trailer load, vehicle load, road conditions
and weather.
5
STARTING AND OPERATING 703

Towing Requirements — Trailer Lights And Wiring
Whenever you pull a trailer, regardless of the trailer size,
stoplights and turn signals on the trailer are required for
motoring safety.
The Trailer Tow Package may include a four- and seven-
pin wiring harness. Use a factory approved trailer har-
ness 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.
Four-Pin Connector
1 — Female Pins
2 — Male Pin
3 — Ground4 — Park
5 — Left Stop/Turn
6 — Right Stop/Turn
5
STARTING AND OPERATING 707

8. Reach through the access hole of the wheel house
splash shield and lift the slide lock upward far enough
to disengage it from the lock post on the back of the
front lamp unit housing.9. Remove the headlamp assembly. Grasp the outboard
edge of the lamp and pull it straight forward to
disengage the ball stud from the plastic grommet.
10. Disconnect the wiring harness connectors from the
bulb socket.
11. Replace bulb(s) as necessary.
CAUTION!
•Do not contaminate the bulb glass by touching it
with your fingers or by allowing it to contact other
oily surfaces. Shortened bulb life will result.
•Always use the correct bulb size and type for
replacement. An incorrect bulb size or type may
overheat and cause damage to the lamp, the bulb
socket, or the lamp wiring.
Slide Lock
852 MAINTAINING YOUR VEHICLE

NOTE:There are access covers over both headlamp bulb
access holes in the quad front lamp unit housing (if
equipped). These covers MUST be reinstalled after the
bulb has been replaced.
Fog Lamps — If Equipped
1. Reach under and behind the front bumper to access
the back of the front fog lamp housing.
2. Disconnect the fog lamp wiring harness connector
from the fog lamp bulb.
3. Rotate the bulb counterclockwise ¼ turn to unlock the
bulb from the housing.
4. Pull the bulb straight out from the housing.
CAUTION!
Do not contaminate the bulb glass by touching it
with your fingers or by allowing it to contact other
oily surfaces. Shortened bulb life will result.
Rear Tail/Stop, Turn Signal And Backup Lamps
1. Remove the two screws that pass through the bed
sheet metal.
7
MAINTAINING YOUR VEHICLE 853