Glossary of Terms

ITEM

ABBREVIATION

DESCRIPTION

Air Conditioning

A/C

System used conditioning the air in the cab

Alternating Current

AC

Electrical current that reverses its direction at regularly recurring intervals

Accessory

ACC

Secondary electrical system

Armrest Control Unit

ACU

Armrest control used to control tractor functions

Automatic Powershift

APS

Transmission feature

Air Quality System

AQS

System used to control conditioned air in the cab

ActiveSeat™ Control Unit

ASU

Computerized system used to control the ActiveSeat™

Auto-Temperature Control

ATC

Automatically controlled air quality system

AutoPowr™

AutoPowr transmission also called IVT™

Battery

Bat

A device used to furnish electrical current

Brakes

BR

Abbreviation

Brake Control Unit

BRC

Computerized system for brake control

Brake Load Sense

BRL

Reference—Brake load sense

ClimaTrak™

Automatically controlled air quality system

Cab Control Unit

CAB

Computerized system for controlling cab electronic functions

Controller Area Network

CAN

A communication system linking on-board electronics

Cold Cranking Amperes

CCA

Refers to a battery's capability to perform during cold-weather operation

Circuit

CCT

A complete path of an electrical current

Chassis Control Unit

CCU

Computerized system for oMonitoring chassis

Counterclockwise

CCW

Direction opposite the rotation of the hands of a clock

Cab Load Center

CLC

Computerized system for controlling cab electrical functions

Clean Oil Reservoir

COR

Reservoir used to contain oil for the tractor hydraulic system

Corner Post Display

CPD

Display for system control units

Cab Switch Module

CSM

Another term for CommandARM™ controls

Component Technical Manual

CTM

Technical manual developed for the servicing of major components

Clockwise

CW

Direction in which the hands of a clock rotate

     

Circulation Motor

Symbols for circulation motor speeds

 

O

Medium Speed

 

+

Fastest Speed

     

Direct Current

DC

Electrical current flowing in one direction only

Displacement Control Valve

DCV

Controls hydraulic pump stroke

Diesel Exhaust Fluid

DEF

 

Digital Multimeter

DMM

An electrical multifunctional measuring device

Diagnostic Receptacle

DR

A connection where hydraulic pressure can be measured

Economy Mode

ECO

Abbreviation

Engine Control Unit

ECU

Computerized system used to govern engine speed

Electronic Displacement Control

EDC

Senses and communicates to the displacement control valve demand for hydraulic pump stroke

Excess Flow (SCV/Hitch Flow)

EF

Reference—SCV/Hitch flow

Excess Flow Load Sense (SCV/Hitch Flow)

EFL

Reference—SCV/Hitch load sense

Electrohydraulic

EH

Refers to a hydraulic valve function that is controlled electrically

Electrohydraulic Selective Control Valve

EH SCV

Selective control valve operated with electrical solenoids

Electrohydraulic Depth Control

EHDC

Abbreviation

Electronic Components Relay

ELX

Refers to the relay powering most of the electronic components

Electronically Programmable Read-Only Memory

EPROM

Abbreviation

Evacuation Diagnostic Receptacle

EVAC

Diagnostic receptacle port used for pre-lubrication of the pump drive gears

Forward-Neutral-Reverse

FNR

Abbreviation

Forward

FWD

Refers to direction of movement

Ground-Driven Pump

GDP

Pump used to operate steering and brakes during emergency conditions

Gallons Per Minute

gpm

Amount of fluid over a period of one minute

Global Positioning System

GPS

Abbreviation

GreenStar™ System

GSS

Part of John Deere Precision Farming Systems

Hitch Control Unit

HCU

Computerized system used to control hitch functions

High-Intensity Discharge Light

HID

Abbreviation

High Pressure - Common Rail

HPCR

Fuel injected engine that utilizes high pressure fuel injection and a common pressure rail

Hitch Slip Command

HSC

System to compensate for traction changes

Housing

Hsg

Abbreviation

Heating-Ventilating and Air Conditioning

HVAC

Abbreviation

Instrument Control Unit

ICU

Computerized system controlling tractor warning functions

Inside Diameter

ID

Abbreviation

Ignition

IGN

Control for starting and stopping the tractor

Independent Link Suspension

ILS

Front axle with an active suspension system that is electrohydraulic controlled

International Standards Organization

ISO

Standards organization

Intelligent Total Equipment Control

iTEC™

Abbreviation

Infinitely Variable Transmission

IVT

A hydro-mechanical transmission with infinitely variable speeds

Joint Industry Council Organization

JIC

Standards organization

Liquid Crystal Display

LCD

A technology used for displaying information

Left-Hand

LH or L-H

Abbreviation

Lateral Hitch Position

LHP

Refers to hitch positioning for a row guidance hitch application

Manifold Air Pressure

MAP

Abbreviation

Mechanical Front Wheel Drive

MFWD

A mechanically powered front axle

Negative

Neg (—)

Refers to a part of an electrical circuit

Number

No.

Abbreviation

Outside Diameter

OD

Abbreviation

O-Ring Face Seal

ORFS or ORS

A type of seal used in making hydraulic connections

Performance Monitor

Perf Mon or PrF

Abbreviation

Product Identification Number

PIN

Serial number relating to tractor identification

Positive

Pos (+)

Refers to a part of an electrical circuit

Potentiometer

POT

A device used to vary electrical voltage

Powershift Transmission

PST

Abbreviation

IVT Transmission Control Unit

PTI

Computerized system used to control IVT transmission shift functions

Power Take-Off

PTO

Abbreviation

Powershift Transmission Control Unit

PTP

Computerized system used to control powershift transmission shift functions

Reverse

Rev

Refers to direction of movement

Revolutions Per Minute

rpm

Abbreviation

Right-Hand

RH or R-H

Abbreviation

Rockshaft

RS

Abbreviation

Society of Automotive Engineers

SAE

Engineering Standards Organization

Selective Control Option

SCo

Control unit for selective control valves 4 and 5

Selective Control Unit

SCU

Computerized system used to control selective control valve functions for selective control valves 1, 2, and 3

Selective Control Valve

SCV

Device used to control remote hydraulic functions

Suspended Front Axle

SFA

Front axle with an active suspension system that is electronically controlled

Slow Moving Vehicle

SMV

Warning sign on the rear of the tractor

Specification

SPEC

Abbreviation

Steering Control Unit

SSU

Computerized system controlling tractor steering

Setup Panel

SUP

Operator control panel used to set selective control valve function

Tracks Tractor Steering System Control Unit

SST

Computerized system controlling tractor steering for tracks tractors

Wheel Tractor Steering System Control Unit

SSU

Computerized system controlling tractor steering for wheel tractors equipped with AutoTrac™

Steering Load Sense

STL

Reference—Steering load sense

Switch

SW

Abbreviation

Tachometer

Tach

Abbreviation

Terrain Compensation Module

TCM

Electronic module that corrects for vehicle dynamics such as roll on side-slopes and rough terrain

Tractor Control Unit - Vehicle

TEC

Electronic system for communicating between vehicle and implement

Tractor Control Unit - Implement

TEI

Electronic system for communicating between implement and vehicle

Temperature

Temp

Abbreviation

Tail Light

TL

Abbreviation

Transmission

Trans

Abbreviation

TouchSet Depth Control

TSDC

Abbreviation-Same as EHDC

Voltage (Volts)

V

Abbreviation

Voltage Detector

V Det

Abbreviation

Vehicle Load Center

VLC

Computerized system for controlling vehicle electrical functions

Without

W/O

Abbreviation

Warning Lamp

WL

Abbreviation

Wide-Open Throttle

WOT

Full throttle

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