2020 Ram ProMaster City wiring

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

interference between the communications equipment
and the vehicle’s electronic systems.
Operating, servicing and maintaining a
passenger vehicle or off-highway motor
vehicle can expose you to chemicals inclu -
ding engine exhaust, carbon monoxide,
phthalates, and lead, which are known to
the State of California to cause cancer and
birth defects or other reproductive harm.
To minimize exposure, avoid breathing
exhaust, do not idle the engine except as ne -
cessary, service your vehicle in a well-ven -
tilated area and wear gloves or wash
your hands frequently when servicing
your vehicle. For more information go to
www.P65Warnings.ca.gov/passenger-vehicle.
WARNING:
VEHICLES SOLD IN CANADA
With respect to any vehicles sold in Canada, the name
FCA US LLC shall be deemed to be deleted and the
name FCA Canada Inc. used in substitution therefore.
DRIVING AND ALCOHOL
Drunken driving is one of the most frequent causes of
accidents.
Your driving ability can be seriously impaired with
blood alcohol levels far below the legal minimum. If
you are drinking, don’t drive. Ride with a designated
non-drinking driver, call a cab, a friend, or use public
transportation. This manual illustrates and describes the operation
of features and equipment that are either standard or

optional on this vehicle. This manual may also include
a description of features and equipment that are no
longer available or were not ordered on this vehicle.
Please disregard any features and equipment described
in this manual that are not on this vehicle.
FCA US LLC reserves the right to make changes in
design and specifications, and/or make additions to
or improvements to its products without imposing
any obligation upon itself to install them on products
previously manufactured.
Driving after drinking can lead to an accident.
Your perceptions are less sharp, your reflexes are
slower, and your judgment is impaired when you
have been drinking. Never drink and then drive.
WARNING!
Copyright © 2019 FCA US LLC

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

interference between the communications equipment
and the vehicle’s electronic systems.
Operating, servicing and maintaining a
passenger vehicle or off-highway motor
vehicle can expose you to chemicals inclu -
ding engine exhaust, carbon monoxide,
phthalates, and lead, which are known to
the State of California to cause cancer and
birth defects or other reproductive harm.
To minimize exposure, avoid breathing
exhaust, do not idle the engine except as ne -
cessary, service your vehicle in a well-ven -
tilated area and wear gloves or wash
your hands frequently when servicing
your vehicle. For more information go to
www.P65Warnings.ca.gov/passenger-vehicle.
WARNING:
VEHICLES SOLD IN CANADA
With respect to any vehicles sold in Canada, the name
FCA US LLC shall be deemed to be deleted and the
name FCA Canada Inc. used in substitution therefore.
DRIVING AND ALCOHOL
Drunken driving is one of the most frequent causes of
accidents.
Your driving ability can be seriously impaired with
blood alcohol levels far below the legal minimum. If
you are drinking, don’t drive. Ride with a designated
non-drinking driver, call a cab, a friend, or use public
transportation. This manual illustrates and describes the operation
of features and equipment that are either standard or

optional on this vehicle. This manual may also include
a description of features and equipment that are no
longer available or were not ordered on this vehicle.
Please disregard any features and equipment described
in this manual that are not on this vehicle.
FCA US LLC reserves the right to make changes in
design and specifications, and/or make additions to
or improvements to its products without imposing
any obligation upon itself to install them on products
previously manufactured.
Driving after drinking can lead to an accident.
Your perceptions are less sharp, your reflexes are
slower, and your judgment is impaired when you
have been drinking. Never drink and then drive.
WARNING!
Copyright © 2019 FCA US LLC

120 SAFETY
How To Disengage The Automatic Locking Mode
Unbuckle the combination lap/shoulder belt and allow it to
retract completely to disengage the Automatic Locking
Mode and activate the vehicle sensitive (emergency) locking
mode.Supplemental Restraint Systems (SRS)
Some of the safety features described in this section may be
standard equipment on some models, or may be optional
equipment on others. If you are not sure, ask an authorized
dealer.
The air bag system must be ready to protect you in a colli-
sion. The Occupant Restraint Controller (ORC) monitors the
internal circuits and interconnecting wiring associated with
the electrical Air Bag System Components. Your vehicle may
be equipped with the following Air Bag System Compo -
nents:
Air Bag System Components
• Occupant Restraint Controller (ORC)
• Air Bag Warning Light
• Steering Wheel and Column
• Instrument Panel
• Knee Impact Bolsters
• Driver and Front Passenger Air Bags
• Seat Belt Buckle Switch
WARNING!
• The seat belt assembly must be replaced if the switch -
able Automatic Locking Retractor (ALR) feature or any
other seat belt function is not working properly when
checked according to the procedures in the Service
Manual.
• Failure to replace the seat belt assembly could increase the risk of injury in collisions.
• Do not use the Automatic Locking Mode to restrain occupants who are wearing the seat belt or children
who are using booster seats. The locked mode is only
used to install rear-facing or forward-facing child
restraints that have a harness for restraining the child.
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SAFETY 129
Rollover Events
Side Air Bags and seat belt pretensioners are designed to
activate in certain rollover events. The Occupant Restraint
Controller (ORC) determines whether deployment in a
particular rollover event is appropriate, based on the
severity and type of collision. Vehicle damage by itself is not
a good indicator of whether or not Side Air Bags and seat belt
pretensioners should have deployed.
The Side Air Bags and seat belt pretensioners will not deploy
in all rollover events. The rollover sensing system deter-
mines if a rollover event may be in progress and whether
deployment is appropriate. In the event the vehicle experi -
ences a rollover or near rollover event, and deployment is
appropriate, the rollover sensing system will deploy the side
air bags and seat belt pretensioners on both sides of the
vehicle.
The SABICs may help reduce the risk of partial or complete
ejection of vehicle occupants through side windows in
certain rollover or side impact events. Air Bag System Components
NOTE:
The Occupant Restraint Controller (ORC) monitors the
internal circuits and interconnecting wiring associated with
electrical Air Bag System Components listed below:
• Occupant Restraint Controller (ORC)
• Air Bag Warning Light
• Steering Wheel and Column
• Instrument Panel
• Knee Impact Bolsters
• Driver and Front Passenger Air Bags
• Seat Belt Buckle Switch
• Supplemental Side Air Bags
• Supplemental Knee Air Bags
• Front and Side Impact Sensors
• Seat Belt Pretensioners
4
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132 SAFETY
(Continued)
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 AVV/START or MAR/RUN to ignition
STOP/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.
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 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 instru -
ment 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 seat attachment
bolts), take the vehicle to an authorized dealer. Only
manufacturer approved seat accessories may be used. If
it is necessary to modify the air bag system for persons
with disabilities, contact an authorized dealer.
WARNING! (Continued)
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STARTING AND OPERATING 177
While audible signals are emitted, the audio system is
muted.
The audible signal is turned off immediately if the distance
increases. The tone cycle remains constant if the distance
measured by the inner sensors is constant. If this condition occurs
for the external sensors, the signal is turned off after three seconds
(stopping warnings during maneuvers parallel to walls).

ParkSense Rear Park Assist Failure Indications
A malfunction of the ParkSense sensors or system is indi
-
cated, during REVERSE gear engagement, by the instrument
panel warning icon.
The warning icon is illuminated and a message is
displayed on the instrument cluster display (if
equipped). Refer to “Warning Lights And
Messages” in “Getting To Know Your Instrument Panel” for
further information.

The sensors and wiring are tested continuously when the
ignition is in the MAR (ACC/ON/RUN) position. Failures are
indicated immediately if they occur when the system is on.

Even if the system is able to identify that a specific sensor is
in failure condition, the instrument cluster display shall
indicate that the ParkSense system is unavailable, without
reference to the sensor in failure condition. If even a single
sensor fails, the entire system must be disabled. The system
is turned off automatically.
Audible And Visual Signals Supplied By The Park
Assist System
SIGNAL MEANING INDICATION
Obstacle
Distance An obstacle
is present
within the sensors' field of view Audible signal
(dashboard
loudspeaker)
• Sound pulses emitted at a rate
that increases as the distance
decreases
• Emits continuous tone at
12 inches (30 cm)
• Adjustable volume level
programmable through personal
settings in the instrument cluster
display. Refer to “Instrument
Cluster Display” in “Getting To
Know Your Instrument Panel” for
further information.
Failure Sensor or
system
failures Visual Signal
(instrument panel)
• Icon appears on display
• Message is displayed on
instrument cluster display (if
equipped)
5
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192 STARTING AND OPERATING
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 harness and
connector.
NOTE:
Do not cut or splice wiring into the vehicle’s 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.NOTE:
• Disconnect trailer wiring connector from the vehicle
before launching a boat (or any other device plugged into
vehicle’s electrical connect) into water.
• Be sure to reconnect once clear from water area.
Four-Pin Connector
CAUTION!
If the trailer weighs more than 1,000 lbs (453 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.
1 — Female Pins
2 — Male Pin
3 — Ground
4 — Park
5 — Left Stop/Turn
6 — Right Stop/Turn
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345
Traction..................................................................................... 196
Traction Control ...................................................................... 102
Trailer Sway Control (TSC) ................................................... 102
Trailer Towing ......................................................................... 184 Cooling System Tips ........................................................... 194
Hitches .................................................................................. 187
Minimum Requirements .................................................... 189
Tips ........................................................................................ 193Trailer And Tongue Weight .............................................. 188Wiring ................................................................................... 192
Trailer Towing Guide ............................................................. 188
Trailer Weight.......................................................................... 188
Transmission............................................................................ 164 Automatic ............................................................. 163, 164, 261
Fluid ...................................................................................... 304
Maintenance......................................................................... 261
Transporting Pets .................................................................... 153
Tread Wear Indicators............................................................ 280
Trip Computer........................................................................... 83 Turn Signals ............................................................................... 92 U
Uconnect Uconnect Settings ..................................................................15
Uconnect Voice Command ....................................................322
Uniform Tire Quality Grades ................................................288
Untwisting Procedure, Seat Belt ...........................................114
V
Vehicle Certification Label.....................................................182
Vehicle Identification Number (VIN) ..................................294
Vehicle Loading.......................................................182, 184, 273
Vehicle Modifications/Alterations .........................................12
Vehicle Storage ..................................................................58, 289
Viscosity, Engine Oil...............................................................249
Voice Recognition System (VR) ............................................322
11
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