Abbreviations

Abbreviations

A

A/B
Air Bag
ABDC
After Bottom Dead Center
ABS
Anti-lock Brake System
AC
Alternating Current
A/C
Air Conditioning
A-ELR
Automatic-Emergency Locking Retractor
A/F
Air Fuel Ratio
ALR
Automatic Locking Retractor
API
American Petroleum Institute
APP
Accelerator Pedal Position
A/T
Automatic Transmission, Automatic Transaxle
ATDC
After Top Dead Center
ATF
Automatic Transmission Fluid, Automatic Transaxle Fluid
AWD
All Wheel Drive
B

BARO
Barometric Pressure
BBDC
Before Bottom Dead Center
BCM
Body electrical Control Module
BTDC
Before Top Dead Center
B+
Battery Positive Voltage
BB+
Battery Positive Voltage for Backup
C

CAN
Controller Area Network
CKP
Crankshaft Position
CMP
Camshaft Position
CO
Carbon Monoxide
CO2
Carbon Dioxide
CPP
Clutch Pedal Position
CPU
Central Processing Unit
CRS
Child Restraint System
CVT
Continuously Variable Transmission, Continuously Variable Transaxle
D

DC
Direct Current
D/C
Driving Cycle
DLC
Data Link Connector
DOHC
Double Over Head Camshaft
DOJ
Double Offset Joint
DOT
Department of Transportation
DRL
Daytime Running Light
DTC
Diagnostic Trouble Code (Diagnostic Code)
D/C
Driving Cycle
E

EBD
Electronic Brake Force Distribution
ECM
Engine Control Module
ECT
Engine Coolant Temperature
ECU
Electronic Control Unit
EEPROM
Electrically Erasable Programmable Read Only Memory
EFE Heater
Early Fuel Evaporation Heater
EGR
Exhaust Gas Recirculation
ELR
Emergency Locking Retractor
EPS
Electronic Power Steering
ESP (R)
Electronic Stability Program
EVAP
Evaporative Emission
G

GND
Ground
GPS
Global Positioning System
H

HVAC
Heating, Ventilating and Air Conditioning
HC
Hydrocarbons
HFC
Hydro Fluorocarbon
HI
High
HO2S
Heated Oxygen Sensor
I

IAC
Idle Air Control
IAT
Intake Air Temperature
IMT
Intake Manifold Tuning
ISC
Idle Speed Control
ISO
International Organization for Standardization
J

JIS
Japanese Industrial Standards
J/B
Junction Block
J/C
Junction Connector
L

L
Left
LCD
Liquid Crystal Display
LED
Light Emitting Diode
LHD
Left Hand Drive vehicle
LIN
Local Interconnect Network
LO
Low
LSPV
Load Sensing Proportioning Valve
M

MAF
Mass Air Flow
MAP
Manifold Absolute Pressure
Max
Maximum
MFI
Multiport Fuel Injection
Min
Minimum
MIL
Malfunction Indicator Lamp ("CHECK ENGINE" Light or "SERVICE ENGINE SOON" Light)
M/T
Manual Transmission, Manual Transaxle
N

NOx
Nitrogen Oxides
O

OBD
On-Board Diagnostic system
OCM
Occupant Classification Module
OCV
Oil Control Valve
O/D
Overdrive
OHC
Over Head Camshaft
O2S
Oxygen Sensor
P

PCM
Powertrain Control Module
PCV
Positive Crankcase Ventilation
PNP
Park / Neutral Position
P/S
Power Steering
PSP
Power Steering Pressure
R

R
Right
RAM
Random Access Memory
ROM
Read Only Memory
RPM
Engine Speed
S

SAE
Society of Automotive Engineers
SDM
Sensing and Diagnostic Module (Air Bag Controller, Air bag Control Module)
SDT
Smart Diagnostic Tester
SFI
Sequential Multiport Fuel Injection
SI
System International
SOHC
Single Over Head Camshaft
SRS
Supplemental Restraint System
T

TCC
Torque Converter Clutch
TCM
Transmission Control Module
TCSS
Traction Control Support System
TDC
Top Dead Center
TP
Throttle Position
TPMS
Tire Pressure Monitoring System
TWC
Three-Way Catalytic converter
U

UART
Universal Asynchronous Receiver / Transmitter
USB
Universal Serial Bus
V

VFD
Vacuum Fluorescent Display
VIN
Vehicle Identification Number
VSS
Vehicle Speed Sensor
VVT
Variable Valve Timing
W

WU-OC
Warm Up Oxidation Catalytic converter
WU-TWC
Warm Up Three-Way Catalytic converter
Other

2WD
2-Wheel Drive
4WD
4-Wheel Drive

NOTE:

ESP (R) is a registered trademark of Daimler AG.