Abbrevia-
tion
Actual word spelled out
Purpose of use (major ap-
plicable machine (*1), or
component/system)
Explanation
VGT
Variable Geometry Tur-
bocharger
Engine
The turbocharger on which the cross-section
area of the exhaust passage is made variable.
VHPC
Variable HorsePower
Control
Engine control system
Finely controls the maximum output of the ma-
chine. High work efficiency and low fuel con-
sumption rate are both achieved.
*1: Code for applicable machine model
D: Bulldozer
HD: Dump truck
HM: Articulate dump truck
PC: Hydraulic excavator
WA: Wheel loader
List of abbreviations used in the circuit diagrams
Abbreviation
Actual word spelled out
A/C
Air Conditioner
A/D
Analogue-to-Digital
A/M
Air Mix Damper
ACC
Accessory
ADD
Additional
AUX
Auxiliary
BR
Battery Relay
CW
Clockwise
CCW
Counter Clockwise
ECU
Electronic Control Unit
ECM
Electronic Control Module
ENG
Engine
EXGND
External Ground
F.G.
Frame Ground
GND
Ground
IMA
Inlet Metering Actuator
NC
No Connection
S/T
Steering
STRG
SIG
Signal
SOL
Solenoid
STD
Standard
OPT
Option
OP
PRESS
Pressure
ABBREVIATION LIST
00 INDEX AND FOREWORD
00-22
PC138USLC-11
Summary of Contents for PC138USLC-11
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