| Abbreviations |
| 2WD |
Two Wheel Drive |
| 4WD |
Four Wheel Drive |
| AAMOF |
As A Matter Of Fact - used by many on mail lists and message boards |
| ABS |
Anti-lock Brake System: Modulates braking pressure to control wheel
lockup |
| ACM |
Airbag Controller Module: monitors sensors and deploys airbag(s) in
the event of an accident |
| AFC |
Air Fuel Control: used on 94 - 98 diesels to control fuel rate at low
boost |
| APPS |
Accelerator Pedal Position Sensor: used on ISB diesel for electronic
throttle control |
| ASD |
Auto Shut Down: relay control system used to shut down engine |
| BDC |
Bottom dead center - the lowest position of a piston in the cylinder
occurs when the crank pin is at bottom dead center |
| BE |
model designation for the Quad Cab Ram pickup |
| BFSC |
Brake Specific Fuel Consumption - pounds of diesel fuel consumed to
produce 1 HP for 1 hour |
| BHAF |
Big Honkin' Air Filter - oversized filter used by the diesel gang |
| BOMB |
Better off modified baby! - used by the diesel gang who hop up thier
engines |
| BR |
model designation for standard cab Ram pickup (and maybe the CC Pickup)
more below |
| BTW |
By The Way - used on mail lists and message boards |
| CAB |
Controller Anti-lock Brake: |
| CARB |
California Air Rescouces Board: environmental regulatory agency in CA |
| CCD |
Chrysler Collision Detection: data bus system used by the airbag and
the anti-lock brake systems |
| CHMSL |
Center High Mounted Stop Light: 3rd brake light at top of truck cab |
| CKP |
Crank Position Sensor: detects position and speed of engine crankshaft |
| CMP |
Camshaft position sensor: detects position of camshaft |
| CPL |
Control Part List: listing of engine parts and timing specifications
for a Cummins engine (Ram CPL numbers) |
| CTD |
Cummins turbo diesel - used by many on mail lists and message boards |
| CTM |
Central Timer Module: controls RKE, chime, courtesy lamps, Speed sensitive
Intermittent wipers, enhanced accident response, VTSS |
| DAB |
Driver Air Bag module: airbag and firing system mounted in the steering
wheel center |
| DC |
DC or D/C = DaimlerChrysler - used on mail lists and message boards |
| DD1, 2, 3 |
DD1, DD2, DD3 = Diesel Dynamics Stage 1 (2 or 3) injectors |
| DEE |
Order code for the NV5600 6 speed manual transmission |
| DLC |
Data Link Connector: used to interface diagnostic equipment with
vehicle electronics |
| DRB |
scan tool used to obtain diagnostic trouble codes (DTC) from controller
modules |
| DRB III |
new generation scan tool used to obtain diagnostic trouble codes (DTC) |
| DTC |
Diagnostic Trouble Code: Fault code set by control module when sensor
data is not as expected |
| DTT |
Diesel Transmission Technologies - aftermarket auto trans
upgrade specialist |
| EBC 2 |
RWAL brake system |
| EBC 325 |
four wheel anti-lock brake system |
| ECM |
Engine Control Module: microprocessor based module that controls various
engine functions |
| ECT |
Engine Coolant Temperature Sensor |
| EEPROM |
Electrically Erasable Programmable Read Only Memory: controller reprogrammable
memory |
| EGR |
Exhaust Gas Recirculation: used to reduce combustion temperature and
pressure to control Oxides of Nitrogen emissions |
| EGT |
Exhaust Gas Temperature: Important measurement for hard working diesel
engines |
| EMCC |
Electronically Modulated Converter Clutch: used for torque converter
lockup control in the automatic transmission |
| ETC |
Order code for standard diesel engine |
| ETH |
2001-2002 Order code for the High Output diesel engine |
| ETH/DEE |
Slang for the 2001 HO diesel with the NV5600 six speed |
| EVA |
Electronic Vibration Analyzer - used to diagnose chassis, engine, and
drivetrain vibrations |
| EVR |
Electronic Voltage Regulator: circuitry in the PCM which controls battery
charging and alternator functions |
| FP |
Fuel Pressure - abbreviation used on message boards |
| FPCM |
Fuel injection Pump Control Module: controls injection pump on 98+ diesel
engines |
| FWIW |
For What It's Worth - used by many on mail lists and message boards |
| GAWR |
Gross Axle Weight Rating: maximum safe load capacity of an axle measured
at the ground. |
| GCW |
Gross Combined Weight: total weight of equipped truck, payload, trailer,
water, and equipment. |
| GCWR |
Gross Combined Weight Rating: maximum allowable GCW |
| GVW |
Gross Vehicle Weight: total curb weight of the truck and payload. |
| GVWR |
Gross Vehicle Weight Rating: maximum allowable GVW |
| HCU |
Hydraulic Control Unit: modulates the brake pressure for ABS |
| HD |
Heavy Duty |
| HX35 |
Holset turbocharger used for most 94+ diesel Rams. |
| HX40 |
Holset turbocharger intended for C engines, but used by some performance
enthusiasts on the Ram's B engine |
| HY35 |
Holset turbocharger used on 2000+ diesel Rams with the automatic transmission |
| IAT |
Intake Air Temperature Sensor |
| IAC |
Idle Air Control valve: used for emissions control on gasoline engines |
| IMHO |
In My Honest Opinion - used on mail lists and message boards |
| IMO |
In My Opinion - used on mail lists and message boards |
| IP |
Instrument Panel |
| ISB |
Interact System B: Cummins designation for the 24 Valve "B"
series diesel introduced to the 1998 Ram |
| JTEC |
Jeep, Truck Engine Control: Combined engine and transmission control
module |
| K&N |
Aftermarket filter and intake system manufacturer |
| KDP |
Killer dowel pin inside the timing gear case on 94-98 12 valve diesels.
If this pin falls out of its blind hole, the repair is expensive. The
two preventative repairs are the Washer
Tab and Drill Jig/Bolt |
| LD |
Light Duty |
| LDP |
Leak Detection Pump: used in the 4 wheel ABS valve assembly |
| LED |
Light Emitting Diode: semiconductor lamp used for displays and warning
lamps |
| LOL |
Laughing Out Loud - By The Way - used on mail lists and message boards |
| LSD |
limited slip differential |
| LWB |
long wheelbase (or LB, for long box or long bed) |
| MAP |
Maximum Absolute Pressure sensor: used for emission control |
| MDS(2) |
Mopar Diagnostic System: diagnostic computer system for service departments |
| MIC |
Mechanical Instrument Cluster: Instrument cluster controller and display
system |
| MIL |
Malfunction Indicator Light: used by engine control system to indicate
a problem to the driver |
| MPI |
Multi Port Injection: Each cylinder has it's own fuel injector in the
intake port. |
| MTV |
Manifold Tuning Valve: used to vary the manifold runners for engine
performance and emission control |
| O2S |
Oxygen Sensor: measures oxygen content of exhaust stream. Used to modify
air to fuel ratio for emission control |
| OBD |
On Board Diagnostics: Ram engine and powertrain self diagnostic system |
| OBD II |
On Board Diagnostics II: enhanced diagnostic system to meet 1997 EPA
requirements |
| OTOH |
On The Other Hand - used by many on mail lists and message boards |
| P7100 |
Fuel injection pump used with 1994 - 1998 Ram 12 valve diesel engines |
| PAB |
Passenger Air Bag module: airbag and firing mechanism on the passenger
side |
| PADS |
Passenger Airbag Disarm Switch: Override switch to disable PAB when
children are riding in front seat |
| PCI |
Programmable Communications Interface |
| PCM |
Powertrain Control Module: microprocessor based module that controls
engine and drivetrain functions |
| PCV |
Positive Crankcase Ventilation: vacuum system used to control crankcase
(blowby) emissions |
| PDC |
Power Distribution Center: Fuse and relay power distribution center
located under the hood. |
| PEP |
Peripheral Expansion Port |
| psi |
Pounds per Square Inch: pressure measurement |
| RAM |
Random Access Memory: read and write memory used by controllers for
data storage |
| RKE |
Remote Keyless Entry: remote operated door lock system |
| RPM |
Revolutions Per Minute: the speed of a turning shaft or rotor |
| ROFL |
Rolling On Floor Laughing - used on mail lists and message boards |
| ROFLMAO |
Rolling On Floor Laughing My A$$ Off - used on mail lists and message
boards |
| ROM |
Read Only Memory: controller "hard" memory that is permanently
written - EEPROM may be reprogrammed with appropriate diagnostic tools |
| RWAL |
Rear Wheel Anti Lock brakes: |
| SBEC |
Single Board Engine Controller |
| SCI |
Serial Communications Interface: Used by the PCM for diagnostics and
for communication with other controller modules |
| SCTM |
Seatbelt Timer Control Module: inertia latching seatbelt controller
built into Quad Cab Models |
| SKIM |
Sentry Key Imobilizer Module: disables engine start until Secret Key
is entered using DRB scan tool !!! Required when a new PCM is installed
in a vehicle |
| SWB |
(or SB, for short box or short bed) |
| SWMBO |
She Who Must Be Obeyed - used by men on mail lists and message boards
to refer to their wife or girlfriend |
| TBI |
Throttle Body Injector: Electronic fuel injector located in normal place
of a carburator. |
| TC |
Torque Converter |
| TCC |
Torque Converter Clutch |
| TCM |
Transmission Control Module: May not be used on Ram trucks |
| TDC |
Top Dead Center: the highest position of a piston in the cylinder occurs
when the crank pin is at top dead center |
| TDR |
Turbo Diesel Register - club for Ram diesel owners - with a website,
magazine, and rallys |
| TIA |
Thanks In Advance - used by many on mail lists and message boards |
| TPS |
Throttle Position Sensor |
| TRS |
Transmission Range Sensor |
| TSB |
Technical Service Bulletin: repair and technical information bulletins
to assist service departments |
| TST |
Diesel engine power enhancement company run by Mark Chapple |
| TTT |
To The Top - - used on message boards to bring a thread to the top |
| VB |
Valve body - auto trans |
| VE |
Bosch Distributor type injection pump used on 89-93 Ram diesel engines |
| VP44 |
Bosch electronic fuel injection pump used on 1998+ Ram diesel engines |
| VIN |
Vehicle Identification Number: unique serial number assigned to each
vehicle |
| YMMV |
From the Your Mileage May Vary disclaimer- used on mail lists and message
boards to indicate that your experience may be different |
| VSS |
Vehicle Speed Sensor/Signal |
| VTSS |
Vehicle Theft Security System: anti theft system with engine disable,
alarm, and door lock features |
| WIF |
Water In Fuel sensor: detection system for water in fuel filter on 1994+
diesel engines |
| WOT |
Wide Open Throttle: maximum throttle position |
