Automotive Acronyms and Abbreviations

Automotive Acronyms and Abbreviations

List of Popular Automotive Acronyms and Abbreviations used in Vehicles

ABS	Antilock Brake System
ABSV	Air Bypass Solenoid Valve (Mazda)
ABV	Air Bypass Valve
AC	Alternating Current
ACC	Air 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	Air Injection Reactor (Secondary Air Injection System)
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
B/MAP	Barometric/Manifold Absolute Pressure
B+	Battery Positive Voltage
BAC	Bypass Air Control Valve
BAP	Barometric Atmosphere Pressure
BARO	Barometric Pressure
BAT	Battery
BBDC	Before bottom dead centre
BBL	Barrel
BC	Blower Control
BCM	Body Control Module
BDC	bottom 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	Bus Positive
BV	Bowl Vent Port (Ford)
BVSV	Bi-Metal Vent Control Valve
BVT	Backpressure Variable Transducer
C
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
D
DAB	Delayed Accessory Bus
dB	Decibels
DBW	Drive-By-Wire
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
DV	TW- Relay Valve Two Way
DVVV	Distributor Vacuum Vent Valve
E
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
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
ft.lb.	Foot Pound
FTL	Fuel Tank Level Sensor
FTO	Filtered Tachometer Output
FTP	Fuel Tank Pressure
FTT	Fuel Tank Temperature
FWD	Front Wheel Drive
G
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

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