Automotive Acronyms and Abbreviations
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Automotive Acronyms and Abbreviations

Automotive Acronyms and Abbreviations

List of Popular Automotive Acronyms and Abbreviations used in Vehicles


ABSAntilock Brake System
ABSV Air Bypass Solenoid Valve (Mazda)
ABV Air Bypass Valve
ACAlternating Current
ACCAir Conditioning Clutch
ACC Automatic Climate Control
ACCS A/C Cycling Clutch Switch
ACD Air Conditioning Demand Switch
ACL Air Cleaner (Thermostatic Type)
ACM Air Bag Control Module
ACON Air Conditioning On Signal
ACP Air Conditioning Pressure Signal
ACPSW Air Conditioning Pressure Switch
ACR Air Conditioning Relay
ACR4 Air Conditioning Refrigerant, Recovery, Recycling, Recharging
ACT Air Charge Temperature
ACTS Air Charge Temperature Sensor
ADS Auxiliary Discriminating Sensor
ACV Air Control Valve
ADU Analog Digital Unit
AECM Air Bag Electronic Control Module
AFC Air Flow Control
AFM Air Flow Meter
AFM Air Flow Meter
AFR Air Fuel Ratio
AFS Air Flow Sensor
AIR(Secondary Air Injection System) Air Injection Reactor
AIRB Secondary Air Injection Bypass
AIRD Secondary Air Injection Diverter
AIS Automatic Idle Speed
AIV Air Injection Valve
ALC Automatic Level Control
ALCL Assembly Line Communications Link (GM)
ALDL Assembly Line Data Link
ALT Alternator (replaced with GEN)
AM1 Air Management 1, AIR Bypass
AM2 Air Management 2, AIR Diverter
AMB Ambient
AOD Automatic Overdrive
AODE Automatic Overdrive Electronic Transmission
AODE-W Automatic Overdrive Electronic Wide (ratio transmission)
AP Accelerator Pedal
APC Automatic Performance Control
APP Accelerator Pedal Position
APS Absolute Pressure Sensor
APS Atmospheric Pressure Sensor
APT Adjustable part Throttle
ARS Automatic Restraint System
ASARC Air Suspension Automatic Ride Control
ASD Automatic Shutdown Relay
ASDM Airbag System Diagnostic Module
ASE Automotive Service Excellence
ASM Acceleration Simulation Mode
ASR Automatic Slip Regulation
ATC Automatic Temperature Control
ATDC After Top Dead Centre
ATF Automatic Transmission Fluid
ATM Actuator Test Mode
ATS Air Temperature Sensor
ATX Automatic Transaxle
AVOM Analog Volt / Ohm Meter
AWD All Wheel Drive
AX4S Automatic 4 Speed Trans.
AXOD Automatic Overdrive Transaxle
AXOD-E Automatic Overdrive Transaxle –  Electronically Controlled


B/MAP Barometric/Manifold Absolute Pressure
B+ Battery Positive Voltage
BAC Bypass Air Control Valve
BAP Barometric Atmosphere Pressure
BARO Barometric Pressure
BAT Battery
BBDCBefore bottom dead centre
BBL Barrel
BC Blower Control
BCM Body Control Module
BDCbottom dead centre
BHP Brake Horse Power
BHS Bimetal Heat Sensor (Ford)
BID Breaker less Inductive Discharge (AMC)
BLM Block Learn Multiplier (replaced with LT FUEL TRIM)
BMAP Barometric/Manifold Absolute Pressure Sensor
BOB Breakout Box
BOO Brake On / Off Switch
BP Barometric Pressure
BPA Mechanical Bypass Air
BPCSV Bypass Control Solenoid Valve
BPP Brake Pedal Position
BPS Back Pressure Sensor
BPT Back Pressure Transducer
BPV Bypass Valve (Ford)
BPW Brake Pulse Width
BSV Backfire Suppressor (Ford)
BTDC Before Top Dead Center
BTS Battery Temperature Sensor
BTSI Brake Transmission Shift Interlock
BTU British Thermal Unit
BUS N Bus Negative
BUS P Positive Bus
BV Bowl Vent Port (Ford)
BVSV Bi-Metal Vent Control Valve
BVTBackpressure Variable Transducer


C Carbon
C Celsius
C.A.R.B. California Air Resource Board
C3I Computer Controlled Coil Ignition
CAC CAC (Charge Air Cooler) After Cooler Charge Air Cooler Inter Cooler
CALPAK Calibration Pack
CAN Controller Area Network
CANP Canister Purge Solenoid Valve EVAP
CARB Carburetor
CARB California Air Resources Board
CAS Crank Angle Sensor
CASE Cranking Angle Sensing Error
CAT Catalytic Converter
CBD Closed Bowl Distributor
CC Catalytic Converter
CC Climate Control
CC Cruise Control
CCA Centre Control Assembly
CCC Computer Command Control System (GM)
CCC Converter Clutch Control Solenoid
CCCI Computer Controlled Coil Ignition
CCD Computer Controlled Dwell
CCDIC Climate Control Driver Information Centre
CCECS Computer Controlled Emission Control System
CCEI Coolant Controlled Idle Enrichment (Chrysler)
CCEV Coolant Controlled Engine Vacuum Switch (Chrysler)
CCM Central Control Module
CCM Continuous Component Monitor
CCO Converter Clutch Overdrive Solenoid
CCOT Cycling Clutch Orifice Tube
CCP Climate Control Panel
CCRM Constant Control Relay Module
CCRM Constant Control Relay Module
CCS Coast Clutch Solenoid
CCSP Carbon Canister Storage/Purge
CCV Canister Control Valve
CDCV Canister Drain Cut Valve
CDI Capacitor Discharge Ignition
CDR Chrysler Diagnostic Readout
CDRV Crankcase Depression Regulator Valve
CE Commutate End
CEAB Cold Engine Air Bleed
CEC Crankcase Emission Control System (Honda)
CEC Computerized Emission Control System
CECU Central Electronic Control Unit (Nissan)
CEL Check Engine Light
CER Cold Enrichment Rod (Ford)
CES Clutch Engage Switch
CESS Cold Engine Sensor Switch
CFC Chlorofluorocarbons
CFI Central Fuel Injection
CFI Continuous Fuel Injection
CFM Cubic Feet Per Minute
CFRM Condenser Fan Relay Module
CFV Critical Flow Venture
CHM Cold Mixture Heater
CID Cubic Inch Displacement
CID Cylinder Identification Signal
CIM Column Integration Module
CIS Continuous Injection System (Bosch)
CKP Crankshaft Position Sensor
CKP REF Crankshaft Position Reference
CKT Circuit
CL Closed Loop
CLC Converter Lockup Clutch (replaced with TCC)
CLCC Closed Loop Carburetor Control
CLECS Closed Loop Emission Control System
CLFCS Closed Loop Fuel Control System
CLNT Coolant
CLV Calculated Load Value
CMFI Central Multiport Fuel Injection
CMP Camshaft Position Sensor
CMP REF Camshaft Position Reference
CMTC Compass/Mini Trip Computer
CNG Compressed Natural Gas
CO Carbon Monoxide
CO2 Carbon Dioxide
COC Conventional Oxidation Catalyst (Ford)
COP Coil On Plug Electronic Ignition
CP Canister Purge (GM)
CPA Connector Position Assurance
CPI Central Port Fuel Injection
CPP Clutch Pedal Position
CPS Central Power Supply
CPSOV Canister Purge Shut Off Valve (Ford)
CPU Central Processing Unit
CRK Cranking Signal
CRT. circuit
CSC Coolant Spark Control (Ford)
CSE GND PCM Case Ground
CSF Crankshaft Speed Fluctuation
CSFI Central Sequential Fuel Injection
CSSA Cold Start Spark Advance System (Ford)
CSSH Cold Start Spark Hold System (Ford)
CTAV Cold Temperature Actuated Vacuum Switch (Ford)
CTM Central Timer Module
CTO Clean Tachometer Output
CTOX Continuous Trap Oxidizer
CTP Closed Throttle Position
CTS Coolant Temperature Sensor
CTVS Choke Thermal Vacuum Switch
CV Constant Velocity
CV Control Valve
CVCC Compound Vortex Controlled Combustion System (Honda)
CVR Control Vacuum Regulator (Ford)
CVS Constant Volume Sampler
CVVT Continuous Variable Valve Timing


DAB Delayed Accessory Bus
dB Decibels
DC Direct Current
DC Duty Cycle
DCISCA DC Motor Idle Speed Actuator
DCL Data Communication Link
DDL Diagnostic Data Link
DEC Digital Electronic Controller
DEC Diesel Engine Control
DEFI Digital Electronic Fuel Injection
DEPS Digital Engine Position Sensor
DERM Diagnostic Energy Reserve Module
DFCO Diesel Fuel Cut-off Mode
DFI Direct Fuel Injection
DFS Deceleration Fuel Shut-off
DI Direct Ignition
DIC Driver Information Center
DICM Distributor Ignition Control Module
DIS Distributorless Ignition System
DLC Data Link Connector
DM Drive Motor
DMCM Drive Motor Control Module
DMCT Drive Motor Coolant Temperature
DME Digital Motor Electronics
DMIVA Distributor Mounted Ignition Vacuum Advance
DMPI Module Drive Motor Power Inverter Module
DMS Distributor Modulator System
DOHC Double Overhead Camshaft
DOL Data Output Line to IPC
DPC Dynamic Pressure Control
DPF Diesel Particulate Filter
DPFE Differential Pressure Feedback EGR
DPI Dual Plug Ignition
DRB Diagnostic Readout Box
DRCV Distributor Retard Control Valve
DRL Daytime Running Lights
DSAS Deceleration Spark Advance System
DSO Digital Storage Oscilloscope
DSR Ford Diagnostic Subroutine
DSS Downshift Solenoid
DSSA Dual Signal Spark Advance (Ford)
DSV Deceleration Solenoid Valve
DTC Diagnostic Trouble Code
DTC FRZ Diagnostic Trouble Code Freeze Frame
DTM Diagnostic Test Mode
DTVS Dual Temperature Vacuum Switch
DV Delay Valve
DVAC Distributor Vacuum Advance Control Valve
DVDSV Differential Vacuum Delay and Separator Valve
DVOM Digital Volt Ohmmeter
DVTW- Relay Valve Two Way
DVVV Distributor Vacuum Vent Valve


EEPROM Electrically Erasable Programmable Read Only Memory
E4OD Electronic 4-Speed Overdrive
EAC Electronic Air Control (replaced with AIR)
EACV Electronic Air Control Valve
EAIR Electronic Secondary Air Injection
EAT Electronically Controlled Automatic Transaxle Or Transmission
EBCM Electronic Brake Control Module
EBL Electric Back Lite (Rear Window Defroster)
EBM Electronic Body Module
EBP Exhaust Back :Pressure
EBTCM Electronic Brake T/C Module
EC Engine Control
ECA Electronic Control Assembly
ECC Electronic Climate Control
ECCS Electronic Concentrated Control System
ECI Extended Compressor at Idle
ECIT Electronic Control Ignition Timing
ECITS Electronic Control Ignition Timing System
ECL Engine Coolant Level
ECM Engine Control Module
ECS Emission Control System
ECT Engine Coolant Temperature
ECU Electronic Control Unit
EDF Electro Drive Fan
EDFI Electronic Diesel Fuel Injection
EDI Electronic Controlled Direct Ignition System
EDIS Electronic Distributorless Ignition System
EDL Engine Data Line
EDM Electronic Distributor Modulator (Ford)
EEC Electronic Engine Control (Ford)
EECS Evaporative Emission Control System
EEGR Electronic EGR (Solenoid)
EEGR Monitor Electronic EGR Test
EEPROM Electronically Erasable Programmable Read Only Memory
EESS Evaporative Emission Shed System (Ford)
EET Electronic EGR Transducer
EEVIR Evaporator Equalized Values in Receiver
EFC Electronic Fuel Control
EFCA Electronic Fuel Control Assembly
EFE Early Fuel Evaporation
EFI Electronic Fuel Injection
EFT Engine Fuel Temperature
EFV Early Fuel Evaporation
EGC Exhaust Gas Check Valve
EGO Exhaust Gas Oxygen Sensor
EGR Exhaust Gas Recirculation
EGR Monitor OBDII EGR Test
EGR TVV Exhaust Gas Recirculation Thermal Vacuum Valve
EGRB EGR Boost Sensor
EGRC EGR Control Solenoid (Ford)
EGRC-BPT EGR Control Back Pressure Transducer
EGRPS EGR Valve Position Sensor
EGRT Exhaust Gas Recirculation Temperature
EGRV Exhaust Gas Recirculation Vent Solenoid
EH Electro Hydraulic
EI Integrated Electronic Ignition System
ELC Electronic Level Control
ELCD Evaporative Loss Control Device
EM Engine Modification
EMB Electromagnetic Brakes
EMF Electromagnetic Field
EMI Electromagnetic Interference
EMR Electronic Module Retard
EOBD European On Board Diagnostics
EOP Engine Oil Pressure
EOS Exhaust Oxygen Sensor
EOT Engine Oil Temperature
EP Exhaust Pressure
EPA Environmental Protection Agency
EPC Electronic Pressure Control
EPOS EGR Valve Position Sensor
EPROM Erasable Programmable Read Only Memory
EPT EGR Pressure Transducer (replaced with PFE)
ESA Electronic Spark Advance (Chrysler)
ESC Electronic Spark Control System
ESD Electrostatic Discharge
ESS Engine Speed Sensor
EST Electronic Spark Timing
ETC Electronic Temperature Control
ETP EGR Pressure Transducer
ETR Electronically Tuned Receiver
EVAP Evaporative Emissions System
EVAP CP Evaporative Canister Purge
EVAP CV Evaporative Emissions System Canister Vent
EVIC Electronic Vehicle Information Center
EVO Electronic Vehicle Orifice
EVP EGR Valve Position Sensor
EVR EGR Vacuum Regulator
EVSV Electronic Vacuum Switching Valve
EWL Engine Warning Lamp


F Fahrenheit
F4WD Full Time Four Wheel Drive
FAN Cooling Fan (Low or High Speed)
FBC Feedback Carburetor
FBCA Feedback Carburetor Actuator
FC Fan Control
FCA Fuel Control Assembly (Chrysler)
FCS Fuel Control Solenoid
FDBK Feedback
FDC Fuel Deceleration Valve
FDV Fuel Decal Valve
FEEPROM Flash Electronically Erasable Programmable Read Only Memory
FF Flexible Fuel
FI Fuel Injector
FIC Fast Idle Control
FICD Fast Idle Control Device
FIPL Fuel Injection Pump Lever
FLC Fluid Lock-up Converter (Ford)
FLS Fluid Level Sensor
FM Fan Motor Program in PCM
FMEM Failure Mode Effect Management
FOM Fix Operating Mode (Limp Mode)
FP Fuel Pump
FPCM Fuel Injection Pump Control Module
FPM Fuel Pump Monitor (in PCM)
FPRC Fuel Pump Regulator Control
FRP Fuel Rail Pressure
FRT Fuel Rail Temperature
FRZ Freeze Frame
FT Fuel Trim; Adaptive Fuel Strategy Foot Pound
FTL Fuel Tank Level Sensor
FTO Filtered Tachometer Output
FTP Fuel Tank Pressure
FTT Fuel Tank Temperature
FWD Front Wheel Drive


g/sec Grams per Second
GAL Gallon
GCM Governor Control Module
GCW Gross Combination Weight
GDC Fuel Data Centre
GDI Gasoline Direct Injection
GEM Generic Electronic Module
GND Electrical Ground Connection
GPC Glow Plug Control
GPL Glow Plug Wait Lamp
GPM Grams Per Mile
GPR Glow Plug Relay
GPS Global Positioning System
GST Generic Scan Tool
GVW Gross Vehicle Weight
GVWR Gross Vehicle Weight Rating
Abbreviations Used by Toyota / Lexus


ACAlternating Current
ACMActive Control Engine Mount System
ACMActive Control Engine
ACISAcoustic Control Induction System
ACSDAutomatic Cold Start Device
ACVAir Control Valve (ACIS)
ADDAutomatic Disconnecting Differential
A/FAir/Fuel Ratio
AHCActive Height Control Suspension
ALR/ELR Automatic Locking Retractor/Emergency Locking Retractor
ASLAutomatic Sound Levelizer
ASVAir Switching Valve (Actuator)
ATAutomatic Transmission (Transaxle)
ATFAutomatic transmission Fluid
AT/PZEVAdvanced Technology Partial Zero Emission Vehicle
AVC-LANAudio Visual Communication – Local Area Network
AVSAdaptive variable Suspension


BACSBoost Altitude Compensation System
BDCBottom Dead Center
BEAMSBreakthrough Engine with Advanced Mechanism System
BEANBody Electronics Area Network
B/LBi-Level / Bluetooth
BTDCBefore Top Dead Center
BVSVBimetallic Vacuum Switching Valve


CBCircuit Breaker
C-BESTCustomized Body Electronics System
CCoCatalytic Converter for Oxidation
CCSCruise Control System
CCVCanister Closed Valve
CDCompact Disk
CdCoefficient of drag
CFCornering Force
CGCenter of Gravity
CHMSLCenter high-mount stop lamp
CLVCalculated Load Value
CPSCombustion Pressure Sensor
CRSChild Restraint System
C/VCheck Valve
CVControl Valve
CVNSoftware Calibration Verification Number or Calibration Verification Number
CVTContinuously Variable Transmission
CWCurb Wight


DACDownhill Assist Control
D-CATDiesel Clean Advanced Technology
DCNIData Communication Network Interface
DIFF. LockDifferential Lock
D/INJDirect Injection
DLIDistributorless Ignition
DOHCDouble Over Head Cam
DPDash Pot
DPNRDiesel PM and NOx Reduction
DRLDaytime running lights
DSDead Soak
DSPDigital Signal Processor


EBDElectronic Brake Force Distribution
ECAMEngine Control and Measurement System
ECBElectronically Controlled Braking System
ECDElectronic Controlled Diesel
ECDYEddy Current Dynamometer
ECUElectronic Control Unit
ECT-iElectronically Controlled Transmission with intelligence (5-speed)
EDElectro-deposited Coating
EDICElectric Diesel Injection Control
EDUElectronic Driving Unit
EFIElectronic Fuel Injection
EGR/VMEGR Vacuum Modulator
ELREmergency Locking Retractor
ESAElectronic Spark Advance
ETCSElectronic Throttle Control System
ETCS-iElectronic Throttle Control System – intelligent
ETRElectronically Tuned Radio
EV-RVElectric Vacuum regulating Valve


FCHVFuel Cell Hybrid Vehicle
FEFuel Economy
FFFront-Engine Front-Wheel-Drive
F/GFuel Gauge
FIPGFormed in Place Gasket
FLFusible Link
F/PFuel Pump
FPUFuel Pressure Up
FTFuel Trim
FW/DFlywheel Damper


GBSVIP Glass Breakage Sensor
GPSGlobal Positioning System


HACGross Vehicle Weight Rating
HCACHydrocarbon Adsorber Catalyst system
HIDHigh Intensity Discharge (Head Lamp)
HSEAHigh Solar Energy-Absorbing
HTHard Top
HWSHeated Windshield System


IACIdle Air Control
IDIIndirect Diesel Injection
IFSIndependent Front Suspension
IGBTSemiconductor Switching Device
IIAIntegrated Ignition Assembly
INIntake (Manifold, Valve)
I/PInstrumental Panel
IRSIndependent Rear Suspension


J/BJunction Block
J/CJunction Connector




LATCHLower anchors and top tether brackets
LHDLeft-Hand Drive
LLCLong-Life Coolant
LSDLimited Slip Differential
LSP and BVLoad Sensing Proportion and Bypass Valve
LSPVLoad Sensing Proportion Valve


MAINT.Engine Oil replacement Reminder Light
MILMalfunction Indicator Lamp
MPSMultiplex communication System
MSRPManufacturer’s Suggested Retail Price
M/TManual Transmission


NANatural Aspiration
NVSNight View System


OCVOil Control Valce(VVT-i)
O/DOver Drive
OEMOriginal Equipement Manufacturing
OHCOverhead Camshaft
O/SOver Size


P and BVProportioning and Bypass Valve
PCSPower Control System
PCVPositive Crankcase Ventilation
PDSPre-Delivery Service
PKVParking Brake
PPSProgressive Power Steering
PSPower Steering
PSDPower-split Device
PTOPower Take-OFF


R and PRack and Pinion
R/BRelay Block
RBSReticulating Bal Type Steering
RDSRadio Broadcast Data Sysem
RFSRigid Front Suspension
RHDRight Hand Drive
RRRear-Engine Rear Wheel Drive
RRSRigid Rear Suspension
RWDRear Wheel Drive


SICSStarting Injection Control System
SOCState of Charge
SOHCSingle Overhead Camshaft
SPISingle Point Injection
SRSSupplemental Restraint System
SSMSpecial Service Material
SSTSpecial Service Tools
STJCold-Start Fuel Injection
SULEVSuper Ultra Low Emission Vehicle


TBIThrottle Body Electronic Fuel Injection
TCCSToyota Computer Controlled System
TCVTiming Control Valve
TDCTop Dead Center
TDIToyota Direct Ignition
TEMSToyota Electronic Modulated Suspension
TFSToyota Financial Services
THSToyota Hybrid System
THS IIToyota Hybrid System 2tr
TIDTest Identification Data
TISTotal Information System for Vehicle Development
TMCToyota Motor Corporation
TMMK.Toyota Motor Manufacturing Kentucky, Inc.
TRACTraction Control System


UARTUniversal Asynchronous Receiver Transmitter
U/DUnder Drive
U/SUnder Size


VCVVacuum Control
VGRSVariable Gear Ratio Steering
VINVehicle Identification Number
VIPToyota Vehicle Intrusion Protection
VPSVariable Power Steering
VSCVehicle Skid Control aka Vehicle Stability Control
VVT-iVariable Valve Timing with intelligence
VVTL-iVariable Valve Timing and Lift with intelligence
VTVVacuum Transmitting Valve
W/HWire Harness
2WDTwo Wheel Drive Vehicle (4×2)
4WDFour Wheel Drive Vehicle (4×4)


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