2WD, 4 x 2
Two-wheel drive
4WD, 4 x 4
Four-wheel drive
A/C
Air conditioner
A/F
Air-fuel ratio
A/T
Automatic transmission
ABDC
After bottom dead center
ABS
Anti-lock brake system
AC
Alternating current
ACC
Adaptive cruise control
ACG
Alternating current generator
ACL
Air cleaner
ACT
Actuator
AEB
Autonomous emergency braking
AHB
Automatic high beam
API
American Petroleum Institute
APP
Accelerator pedal position
APU
Air processing unit
ASM (Assy)
Assembly
ASR
Anti-slip regulator
ASSIT
Assistant
ATDC
After top dead center
ATF
Automatic transmission fluid
B+
Battery positive terminal
BARO
Barometric pressure
BAT
Battery
BBDC
Before bottom dead center
BCM
Body control module
BCU
Battery control unit
BJ
Birfield joint
BKT
Bracket
BRG
Bearing
BSM
Blind Spot Monitor
BTDC
Before top dead center
C/B
Circuit breaker
C/U
Control Unit
CAC
Charge air cooler
CAN
Controller area network
CAS
Cab air suspension
CGW
Central gateway
CKP
Crankshaft position
CLU
Change lever unit
CMP
Camshaft position
CNG
Compressed natural gas
CNT
Center
CO
Carbon monoxide
CPU
Central processing unit
D2L
Type of brake system
DC
Direct current
DD
Direct drive
Def
Defogger
DI
Direct injection type
DLC
Data link connector
DMM
Digital multimeter
DMU
Data memory unit
DOJ
Double offset joint
DPD
Diesel particulate defuser
DRL
Daytime running light
DRM
Data recording module
DTC
Diagnostic trouble code
EBD
Electronic braking force distribution
EBS
Electronic braking system
ECM
Engine control module
ECT
Engine coolant temperature
ECU
Electronic control unit
EDU
Engine driver unit
EEPROM
Electrically erasable programmable ROM
EGR
Exhaust gas recirculation
EGT
Exhaust gas temperature
EHCU
Electronic hydraulic control unit
ELK
Emergency Lane Keeping
EMI
Electromagnetic interference
EPS
Electric Power Steering
ESC
Electronic stability control
EVRV
Electric vacuum regulating valve
EXH
Exhaust
F/B
Feedback
F/C
Fuel cut
F/L
Fusible link
FCG
FMS CAN gateway
FCW
Front Collision Warning
Fed
Federal (All states except Calif.)
FLW
Fusible link wire
FMS
Fleet management system
FRP
Fuel rail pressure
FRT
Front
FT
Fuel temperature
FTB
Failure Type Byte
FUP
Front underrun protection
FWD
Forward
Gal
Gallon (3.785 L)
GEN
Generator
GND
Ground
GSI
Gear Shift Indicator
GSU
Gear shift unit
GVW
Gross vehicle weight
HAB
Hydro-assist brake
HC
Hydrocarbon
H-Gear
Hypoid gear
HID
High Intensity Discharge
HLA
Hydraulic lash adjuster
HO2S
Heated O2 sensor
HPS
Hydraulic power steering
HT
Hypoid tandem
HVAC
Heater ventilation air conditioner
IAC
Idle air control
IAT
Intake air temperature
IBS
Intelligent battery system
IC
Integrated circuit, Ignition control
ICU
Immobilizer control unit
ID Plate
Identification plate, name plate
IG
Ignition
IN
Intake
INJ
Injection
ISC
Idling speed control
ISO
International Organization for Standardization
ISP
Intake shutter position
ISL
Intelligent Speed Limiter
ISS
Idling stop system
ITP
Intake throttle position
J/B
Junction block
J/C
Joint connector
JIS
Japanese Industrial Standards
K/D
Kick drive
KW
Type of communication format (Keyword)
LCD
Liquid crystal display
LDP
Lane Departure Prevention
LDW
Lane Departure Warning
LED
Light emitting diode
LEV
Low emission vehicle
LH
Left hand
LHD
Left Hand Drive
LKAS
Lane keep Assist System
LSD
Limited slip differential
LSPV
Load sensing proportioning valve
LT
Type of brake system (Leading/trailing brake)
LTD
Limited
M/T
Manual transmission
M/V
Magnetic valve
MAF
Mass air flow
MAP
Manifold absolute pressure
Max
Maximum
MCU
Motor control unit
MID
Multi-information display
MIL
Malfunction indicator light
Min
Minimum
MPU
Microprocessing unit
MPV
Multi-protection valve
MSL
Manual Speed Limiter
NA
Natural aspirated
NC
Normally closed
NO
Normally open
NOx
Nitrogen oxide
NR
Noise reduction equipment
N-TDC
TDC pass rotation speed
O/D
Overdrive
O2S
O2 sensor
OBD
On-board diagnosis
OEM
Original equipment manufacturer
OPT
Option
OT
Oil temperature
P/L
Pilot light
P/S
Power steering
PCB
Pre-crash brake
PCD
Pitch diameter, pitch circle diameter
PCV
Pump control valve/Positive crankcase ventilation
P-I
Proportion-integration
PM
Particulate matter
POS
Position
PTO
Power take-off
PWM
Pulse width modulation
QOS
Quick on start system
QWS
Quick warming up system
R/L
Relay
RAM
Random access memory
RCTA
Rear Cross Traffic Alert
REA
Rotary electric actuator
REF
Reference
REV
Reverse
RH
Right hand
RHD
Right Hand Drive
ROM
Read-only memory
RP
Rail pressure
RR
Rear
RUP
Rear underrun protection
RWD
Rearward
SAE
Society of Automotive Engineers
SAS
Steering angle sensor
SBF
Slow blow fuse
SCV
FRP regulator
S-Gear
Spiral gear
SIG
Signal
SLD
Shield
SOC
Status of hybrid battery charging
SRS
Supplemental restraint system
ST
Starter/Start
STD
Standard
STRG
Steering
SVS
Service Vehicle Soon
SW
Switch
T/F
Transfer
TCC
Torque converter clutch
TCCM
Transfer case control module
TCM
Transmission control module
TCS
Traction control system
TDC
Top dead center
TEMP
Temperature
TSR
Traffic Sign Recognition
TFT
Transmission fluid temperature
TP
Throttle position
TWV
Two-way valve
UJ
Universal joint
VAT
View assist technology
VCI
Vehicle communication interface
VGS
Variable geometry system
VIN
Vehicle identification number
VNT
Variable nozzle turbocharger
VOL, Vol.
Volume
VSS
Vehicle speed sensor
VSV
Vacuum switching valve
WAM
Wireless Access Module
W/B
Wheel base
W/H
Wire, harness
W/L
Warning light
W/O
Without
W/S
Weld splice
WI
With
WOT
Wide-open throttle