Page 241 of 338

switch. Connections to the switches are found under the
hood in the connectors attached to the auxiliary Power
Distribution Center.
You have the ability to configure the functionality of the
auxiliary switches via the Electronic Vehicle Information
Center (EVIC) or Driver Information Display (DID). All
switches can now be configured for setting the switch
type operation to latching or momentary, power source of
either battery or ignition, and ability to hold last state
across key cycles.
NOTE:Holding last state conditions are met when
switch type is set to latching and power source is set to
ignition.
For further information on using the auxiliary switches,
please refer to the Ram Body Builders Guide by accessing
www.rambodybuilder.comand choosing the appropri-
ate links.
POWER TAKE OFF OPERATION — IF EQUIPPED
(CHASSIS CAB ONLY)
This vehicle when equipped with PTO Prep and either
the AS69RC automatic six-speed or G-56 manual six-
speed transmissions, will allow for an aftermarket upfit
with a transmission driven PTO (power take off). The
customer will have the ability to operate the PTO in
either a “stationary” or “mobile” mode. The vehicles will
be factory set to the “stationary” mode. To select ’mobile
mode’ You will need to enter the commercial vehicle
menu on the EVIC/DID screen and select mobile PTO
mode. Details of the PTO selection modes and further
PTO information is available at the Ram Truck Body-
builders web site. www.rambodybuilder.com
AS69RC Six-Speed Automatic Transmission Only
The PTO drive gear (part of the AS69RC) operates at
torque converter turbine speed. The turbine speed will be
5
STARTING AND OPERATING 239
Page 242 of 338

less than engine speed when the torque converter clutch
is not engaged and will be same as engine speed when
the torque converter clutch is engaged.
Stationary Mode
To operate the PTO in this mode the vehicle must meet
the following conditions:
•Be in PARK position (vehicles equipped with auto-
matic transmission.)
• PTO switch has been activated.
• Parking brake applied (vehicles equipped with
manual transmission).
• Brake pedal must not be applied.
• Vehicle engine must be running.
• No vehicle, brake or clutch switch faults present. •
PTO must be correctly installed using the vehicle
provided circuits.
The Electronic Vehicle Information Center (EVIC) or
Driver Information Display (DID) will display a PTO
On message for five seconds if the above conditions are
met. Otherwise, the EVIC/DID will display a message
To Operate PTO Shift To Park indicating what operator
action should be taken to engage the PTO mode.
The customer has the choice to operate the PTO by
utilizing the cruise control switches or by utilizing a
remote control (provided by the PTO supplier). To oper-
ate the feature using the cruise control switches, the
customer must first activate the PTO switch which will
turn on the PTO. In order to increase or decrease the
engine idle speed, to optimize the PTO function, the
“RESUME/ACCEL” and “DECEL” cruise switches can
240 STARTING AND OPERATING
Page 243 of 338

be used respectively. To disengage PTO operation and
return to “standard vehicle operation” simply toggle the
PTO switch to the OFF position.
The torque converter clutch (TCC) will automatically
engage at engine speeds above 1,200 RPM (engine speed)
in PTO stationary mode. Once engaged, the TCC will
remain applied and will not disengage until the engine
speed falls below 1,000 RPM. TCC engagement is desir-
able for certain types of PTO applications (Automatic
Transmission Only).
To operate the PTO via a remote switch, the customer
must make sure the above conditions are met. It is vital
for proper operation that the PTO and remote have been
installed correctly, paying special attention to ensure the
vehicle provided wiring has been connected properly.
This is the responsibility of the installer of the PTO and
switches/remote system. It is the responsibility of the
PTO manufacturer to ensure that their electrical (switchesand remote) system is compatible with the vehicle’s
electrical architecture and software functionality.
NOTE:
Single set speed can be programmed via the PTO
menu on the EVIC/DID screen. Further details are avail-
able at the Ram Truck Bodybuilders web site located
at
www.rambodybuilder.com.
Mobile Mode
To operate the PTO in this mode the vehicle must meet
the following conditions:
• Mobile mode is activated via the menu on the EVIC/
DID screen.
• (ON/OFF) switch has been activated.
• Vehicles with automatic transmission must be in PARK
or DRIVE.
• Parking brake must not be applied.5
STARTING AND OPERATING 241
Page 261 of 338
•UQS Sensor
The DEF injection system and SCR catalyst enable the
achievement of diesel emissions requirements; while
maintaining outstanding fuel economy, drivability,
torque and power ratings.
Refer to “Electronic Vehicle Information Center (EVIC) or
Driver Information Display (DID)” in “Understanding
Your Instrument Panel” for system messages and warn-
ings. NOTE:
•
Your vehicle is equipped with a DEF injection system.
You may occasionally hear an audible clicking noise.
This is normal operation.
• The DEF pump will run for a period of time after
engine shutdown to purge the DEF system. This is
normal operation.
5
STARTING AND OPERATING 259
Page 301 of 338

vehicle is on level ground, enough lubricant should be
added to bring the level to 1/4 in (6 mm) below the
bottom of the filler hole.
Automatic Transmission — If Equipped
Selection of Lubricant
It is important to use the proper transmission fluid to
ensure optimum transmission performance and life. Use
only the manufacturer ’s specified transmission fluid.
Refer to “Fluids, Lubricants, and Genuine Parts” in this
section for fluid specifications. It is important to maintain
the transmission fluid at the correct level using the
recommended fluid.
No chemical flushes should be used in any transmission;
only the approved lubricant should be used.
CAUTION!
Using a transmission fluid other than the manufac-
turer ’s recommended fluid may cause deterioration
in transmission shift quality and/or torque converter
shudder, and will require more frequent fluid and
filter changes. Refer to “Fluids, Lubricants, and
Genuine Parts” in this section for fluid specifica-
tions.
Special Additives
The manufacturer strongly recommends against using
any special additives in the transmission. Automatic
Transmission Fluid (ATF) is an engineered product and
its performance may be impaired by supplemental addi-
tives. Therefore, do not add any fluid additives to the
transmission. The only exception to this policy is the use
7
MAINTAINING YOUR VEHICLE 299
Page 336 of 338
Engine Block Heater.................202 , 217
Manual Transmission ....................196
Remote ............................. .138
Starting Procedures ....................... .196
Starting Procedures (Diesel Engines) ............196
Synthetic Engine Oil ...................... .275
Tip Start ............................... .197
Torque Converter Clutch ....................233
Traction Control ......................... .298
Transfer Case Fluid ................................311 Transmission
Automatic ........................... .222
Fluid ................................311
Manual ......................... .196 , 234
Shifting ............................. .220
Viscosity, Engine Oil ...................... .274
Voltmeter .............................. .208
Water Separator, Diesel Fuel ..................280
334 INDEX - RAM 2500 / 3500 / 4500 / 5500