Abbreviations Most Often Used
A
A - Amperes
AAC - Auxiliary Air Control
AAP - Auxiliary Acceleration Pump
AAS - Aspirator Air System
AAS - Auto Adjust Suspension
AAV - Anti-Afterburn Valve
AB - Air Bleed
ABAV - Air Bleed Actuator Valve
ABDC - After Bottom Dead Center
ABS - Acrylonitrile Butadian Styrene Resin (Type of Plastic Used in Cars)
ABS - Altitude Barometric Switch
ABS - Anti-Lock Brake System
Abs. - Absolute
ABV - Air By-Pass Valve
AC - Alternating Current
AC - Altitude Compensator
ACCWM - Air Cleaner Cold Weather Modulator
A/C - Air Conditioner
A/C - Air Conditioning
A/C Cltch. - A/C Clutch
Accel. - Accelerator
Accum. - Accumulator
Accy. - Accessory
Ack. - Acknowledge
ACD - Auxiliary Control Device
ACDV - Air Cleaner Diverter Valve
ACkV - Air Check Valve
A/CL - Air Cleaner
A/CL-BM - Air Cleaner Bimetal Sensor
A/CL-BMS - Air Cleaner Bimetal Sensor
A/CL-CWM - Air Cleaner Cold Weather Modulator
A/CL-DV - Air Cleaner Duct Valve Vacuum Motor
A/CL-TSOV - Air Cleaner Temperature Sensor Override Valve
A/CL-VCD - Air Cleaner Vacuum Control Delay
A/CL-VCV - Air Cleaner Vacuum Control Valve
A/CL-VM - Air Cleaner Vacuum Motor
ACT - Air Charge Temperature
Actu. - Actuator
Actv. - Active
ACV - Air Control Valve
Adj. - Adjust or Adjustable
ADL - Automatic Door Lock
ADS - Anti-Dieseling Solenoid
Adv. - Advance
AFC - Airflow Controlled Fuel Injection
AGE - Air Guard
AI - Air Injection
AICV - Air Injection Check Valve
AID - Air Injection Dual
A.I.R. or AIR - Air Injection Reactor
AIR-BPV - AIR By-Pass Valve
AIR-ChV - AIR Check Valve
AIR-DVLV - AIR Diverter Valve
AIR-IVV - AIR Idle Vacuum Valve
AIR. Sel. - AIR Selector
AIS - Air Injection System
AIS - Air Injection Single
AIV - Air Injection Valve
AIVV - Air Idle Vacuum Valve
ALCL - Assembly Line Communication Link
ALDL - Assembly Line Data (Diagnostic) Link
Alm. - Alarm
Alt. - Alternator
Alt. or Alti. - High Altitude Emissions
Amb. - Ambient
AMC - American Motors Corporation
AMgV - Air Management Valve
Amm. - Ammeter
Amp - Ampere
Amp. - Amplifier
Ant. - Antenna
ANTBV or ANTI-BFV - Anti-Backfire Valve
Anti-Dsl. - Anti-Diesel
APCV - Air Pump Control Valve
APDV - Air Pump Diverter Valve
APD-VLV - Air Pump Diverter Valve
APREVLV - Air Pump Relief Valve
AS - Airflow Sensor
AS - Air Suction
ASCPS - Air Switch Canister Purge Solenoid
ASCPT - Air Switch Canister Purge Timer
ASDV - Air Switching Diverter Valve
ASRV - Air Switching Relief Valve
ASS - Air Switching Solenoid
Assy. - Assembly
ASV - Air Switching Valve
ASVS - Air Switching Vacuum Solenoid
A/T - Automatic Transaxle or Transmission
ATC - Automatic Temperature Control
ATDC - After Top Dead Center
ATF - Automatic Transmission Fluid
ATS - Air Temperature Sensor
Auto. - Automatic
Auto. Trans. - Automatic Transaxle or Transmission
Aux. - Auxiliary
Avg. - Average
AWD - Air Warning Device
AXOD - Automatic Overdrive Transaxle
B
Bap. Sens. - Barometric Absolute Pressure Sensor
Baro. - Barometric
Batt. - Battery
BBDC - Before Bottom Dead Center
Bbl. - Barrel
BCDO - Boost Controlled Deceleration Device
BCM - Body Control Module
BHP - Brake Horsepower
Bi. Met. - BiMetallic Air Temperature Control Sensor
Bk. - Back
Bk. Rest - Back Rest
Blst. - Ballast
Blwr. - Blower
BMAP or BMAPS - Barometric and Manifold Absolute Pressure Sensor
B/P - EGR Back Pressure Transducer
BPEGR - Back Pressure EGR
BPS - Exhaust Back Pressure Sensor
BPS - Barometric Pressure Sensor
BPT - Back Pressure Transducer
PBV - By-Pass Valve
Brkr. - Breaker
BS - Barometric Switch
BS - Bimetal Sensor
BTDC - Before Top Dead Center
Bulkhd. - Bulkhead
BTU - British Thermal Units
B/U or B-U - Back-Up
Buz. - Buzzer
BV - Bowl Vent Port
BVT - Backpressure Variable Transducer
C
C or C° - Celsius
C 3 I - Computer Controlled Coil Ignition
C4 - Computer Controlled Catalytic Converter
CAC or CACV - Combined Air Control Valve
Calib. - Calibration
Calif. - California
Can. - Canada
Can. - Canister
Canc. - Cancel
CanCV - Canister Control Valve
Can. Prg. - Canister Purge
Cap. - Capacitor or Capacity
Carb. - Carburetor
CARB - California Air Resources Board
CAT or Cat. - Catalytic Converter
CATV - Cold Temperature Activated Vacuum
CB - Circuit Breaker
CB - Choke Breaker
CBS - Coasting By-Pass System
CC - Cruise Control
cc - Cubic Centimeters
CCC - Computer Command Control
CCS - Controlled Combustion System
CEAB - Cold Engine Air Bleed
CC EGR - Coolant Controlled EGR
CCEV or CCEVS - Coolant Control Engine Vacuum Switch
CCEVV - Coolant Control Engine Vacuum Valve
CCIV - Coolant Control Idle Enrichment Valve
CCOT - Cycling Clutch Orifice Tube
CCP - Controlled Canister Purge
CCS - Controlled Combustion System
CCW - Counterclockwise
CD-REGVLV - Crankcase Depression Regulator Valve
CEAB - Cold Engine Air Bleed
CEC - Combined Emission Control (Valve)
CEC - Computerized Emission Control
CEC - Computerized Engine Control
Cent. - Center
CESS - Cold Engine Sensor Switch
CFI - Central Fuel injection
CFI - Cross Fire Injection
Chk. - Check
Chk. Eng. - Check Engine
Chng. - Change
Chrg. - Charge or Charging
ChVLV - Check Valve
CI - Cubic Inches
CID - Cubic Inch Displacement
Cig. - Cigarette
Cig. Ltr. - Cigarette Lighter
Circ. - Circuit
Circ. Brkr. - Circuit Breaker
CIS - Continuous Injection System
CIS-E - CIS-Electronic
CkDL-VLV - Check Delay Valve
Ckt. - Circuit
Ck-VLV - Check Valve
CL - Closed Loop
CLCC - Closed Loop Carburetor Control
Clch. - Clutch
CLEC - Closed Loop Emission Control
Clk. - Clock
Clmn. - Column
Clmt. - Climate
Clrnc. - Clearance
Clstr. - Cluster
CMH - Cold Mixture Heater
Cmpnstr. - Compensator
Cmptr. - Computer
Cncld. - Concealed
Cntr. - Central or Center
Cnvnc. - Convenience
CO - Carbon Monoxide
CO - Choke Opener
CO 2 - Carbon Dioxide
COC - Conventional Oxidation Catalyst
Colng. - Cooling
Colnt. - Coolant
Comb. - Combination
Comp. - Compressor
Compens - Compensation
Compt. - Compartment
Cond. - Condenser
Conn. - Connector or Connection
Cont. - Continued or Control
Conv. - Convertible or Converter
Count. - Counter
CoV - Control Valve
CP - Canister Purge
CPCV - Canister Purge Control Valve
CPS - Canister Purge Solenoid
CPS - Central Power Supply
CP-TVS - Canister Purge TVS
CPU - Central Processing Unit
CPV - Canister Purge Valve
CPVVV - Choke Pulldown Vacuum Vent Valve
CRS - Choke Return System
Crnr. - Corner
Crnrng. - Cornering
CRT - Cathode Ray Tube
CRTC - Cathode Ray Tube Controller
CRV - Coasting Richer Valve
CSCS - Cold Start Control Solenoid
CSSA - Cold Start Spark Advance
CT - Cold Temperature
CTAV - Cold Temperature Actuated Vacuum or Ignition Advance
CTO - Coolant Temperature Override
Ctrl. - Control
Ctrlld. - Controlled
Ctrllr. - Controller
CTS or CTSW - Coolant Temperature Switch
CTSWH - Closed Throttle Switch
Ctsy. - Courtesy
CTTS - Coolant Temperature Thermo Switch
CTVS - Choke Thermal Vacuum Switch
Cu. In. - Cubic Inches
CV - Check Valve
CV - Constant Velocity
CVSCC - Coolant Vacuum Switch Cold Closed
CVSCO - Coolant Vacuum Switch Cold Open
CVS3P - Cold Vacuum Spark, 3-Port
CW - Clockwise
Cyl. - Cylinder
D
"D" - Drive
Damp. - Damper
DAS - Distributor Advance Solenoid
DBC - Dual Bed Catalytic
DC - Direct Current
DC - Digijet Control
DCLV or DC-VLV - Deceleration Valve
DCM/C-VLV - Deceleration Mixture Control Valve
DCP-TVS - Distributor & Canister Purge TVS
DCS - Deceleration Control System
DCTO - Dual Coolant Temperature Override
DD - Dual Distributors
DDD - Dual Diaphragm Distributor
DDV - Distributor Decel Valve
DEC - Digital Engine Control
Decel. - Deceleration
Def. - Defroster
Defog. - Defogger
Deg. - Degree
De-Ice. - De-icer
Del. - Delay
Desig. - Designation
Detec. - Detector
Deton. - Detonation
Detrnt. - Deterrent
DFI - Digital Fuel Injection
Dft. - Defeat
DI - Deceleration Idle
Diag. - Diagnostic
DIDV - Dual Ignition Delay Valve
Diff. - Differential
Dig. - Digital
Dim. - Dimmer
Dir. - Direction or Directional
Disp. - Display
Dist. - Distribution
Distr. - Distributor
Dlx. - Deluxe
Dly. - Delay
DME - Digital Motor Electronics
DMS - Dual Manifold System
Dn. - Down
Dnshft. - Downshift
DP - Dashpot
DPD - Dual Point Distributor
Dr. - Door
Drop. - Dropping
DRS - Distributor Retard Solenoid
Drvr. - Driver
DS - Detonation Sensor
DS - Distributor Spark
Dsl. - Diesel
Dstnc. - Distance
DTM - Decel Throttle Modulator
DTVS - Distributor Thermal Vacuum Switch
DV - Decel Valve
DV - Delay Valve
DV - Diverter Valve
DVAS - Distributor Vacuum Advance Solenoid
DVCS - Distributor Vacuum Control Switch
DVCV - Differential Vacuum Control Valve
DVD - Differential Delay Valve
DVDSV - Differential Vacuum Delay Separator Valve
DVDV - Distributor Vacuum Delay Valve
DVRV - Distributor Vacuum Regulating Valve
DVTR-VLV - Diverter Valve
DVTW - Delay Valve Two-Way
DVVV - Distributor Vacuum Vent Valve
E
EAC - Electronic Air Control
EAC - Electric Assist Choke
EAVS - Electrically Actuated Vacuum Switch
EBCV - Electric Air Bleed Control Valve
EC - Electric Choke
ECA - Electronic Control Assembly
ECC - Electronic Chassis Control
ECC - Electronic Climate Control
ECC - Electronic Computer Control
ECC - Electronic Controlled Carburetor
ECCS - Electronic Concentrated Control System
ECI - Electronic Controlled Ignition
ECI - Electronic Controlled Injection
ECM - Electronic Control Module
Econ. - Economy
ECRV - Emission Control Regulator Valve
ECS - Electronic Control Suspension
ECS - Emission Control System
ECT - Electronic Control Transmission
ECT - Engine Coolant Temperature
ECU - Electronic Control Unit
EDM - Electronic Distributor Modulator
EEC - Electronic Engine Control
EEC - Evaporative Emission Control
EFC - Electronic Fuel Control
EFE - Early Fuel Evaporator
EFI - Electronic Fuel Injection
EGO - Exhaust Gas Oxygen
EGO Sens. Gnd. - EGO Sensor Ground
EGR - Exhaust Gas Recirculation
EGR-BldSOL - EGR Bleed Solenoid
EGRC or EGRCS - EGR Control Solenoid
EGR-CLR - EGR Cooler
EGR-CTS - EGR Charge Temperature Sensor
EGR-DV - EGR Delay Valve
EGR-EPV - EGR External Pressure Valve
EGR-EVR - EGR Electronic Vacuum Regulator
EGR-RSR - EGR Reservoir
EGRV - EGR Vent Solenoid
EGR-VSOL - EGR Vacuum Solenoid
EGR-VVA - EGR Venturi Vacuum Amplifier
EIS - Electronic Ignition System
ELB - Electronic Lean Burn
ELC - Electronic Level or Load Control
Elec. - Electric
Elect. - Electronic
Emis. or Emiss. - Emission
Eng. - Engine
EPA - Environmental Protection Agency
EPS - Electronic Power Steering
EPR - Exhaust Pressure Regulator
ESA - Electronic Spark Advance
ESC - Electronic Spark Control
ESS - Electronic Spark Selection
ESS - Engine Speed Sensor
ESSM - Engine Speed Switch Module
EST - Electronic Spark Timing
ETC - Electronic Throttle Control
ETS - Engine Temperature Switch
Evap. - Evaporative
EVCR - Emission Vacuum Control Regulator
EVRV - Electronic Vacuum Regulator Valve
EVS - Economy Vacuum Switch
Ex. or Exc. - Except or Excluding
Exch. - Exchange
Exh. - Exhaust
Ext. - Exterior
EZF - Performance Graph Ignition
F
F or F° - Fahrenheit
FAI - Fresh Air Intake
F/B - Feedback
F/B - Fuse Box or Block
FBC or FC - Feedback Carburetor
FCO - Fuel Cut-Off
FCS - Fuel Control System
FDC - Fuel Deceleration Control
FDLV - Forward Delay Valve
FDV - Fuel Decel Valve
FDV - Forward Delay Valve
Fed. - Federal
FES - Fuel Evaporation System
FFOT - Ford Fixed Orifice Tube
FIA - Fast Idle Actuator
FICD - Fast Idle Control Device
FISR - Fast Idle Solenoid Relay
FJEGR - Floor Jet EGR
Flshr. - Flasher
Fnt. - Front
Fnt. WD - Front Wheel Drive
FR - Fuel Return
Freq. - Frequency
F/Rly. Pnl. - Fuse/Relay Panel
Frwd. - Forward
FS - Forward Spark
FS - Fuel Separator
FSS - Fuel Shutoff System
Ft.Lbs. or ft.lbs. - Foot Pounds
FTVC - Fuel Tank Vapor Control
Func. - Function
Fus. - Fusible
Fus. Link - Fusible Link
FVEC - Fuel Vapor Emission Control
FVR - Fuel Vapor Return
4WD - Four-Wheel Drive
4WS - Four-Wheel Steering
FWD - Front Wheel Drive
G
g - Grams
Ga. - Gauge
Gals. - gallons
Gen. - Generator
Gnd. - Ground
Gov. - Governor
H
HAC - High Altitude Compensator
HADV - Heated Air Delay Valve
HAI - Heated Air Intake
Ham. - Harness
HAS - High Altitude System
HATSV - Heated Air Temperature Sensing Valve
Haz. - Hazard
HC - Hydrocarbons
H/D - Heavy Duty
HDC - Heavy Duty Cooling
HDSP-CT or HDSP-CTO - Heavy Duty Spark Coolant Temperature Override
HDVA-CTO - Heavy Duty Vacuum Advance CTO
Headlt. - Headlight
HEI - High Energy Ignition
Hg - Mercury
Hgt. - Height
Hi. - High Beam
Hi. Alt. or High Alt. - High Altitude
HIC - Hot Idle Compensator
HICV - HIC Valve
Hi-Spd. - High Speed
Hndl. - Handle
HO - High Output
HP - Horsepower
HP - High Performance
Hrn. - Horn
Hsg. - Housing
HSLA - High Strength Low Alloy (Steel)
HT - High Temperature
Htr. - Heater
HTR - Heavy Truck
HW-AFC - Hot Wire AFC
Hyd. - Hydraulic
Hz - Hertz (Cycles Per Second)
IAC - Idle Air Control
IAS - Idle Air Stepper
IC - Idle Compensator
IC - Integrated Circuit
ICM - Ignition Control Module
ICVS - Idle Control Solenoid Vacuum Switch
I.D. - Inside Diameter
IES - Idle Enrichment System
Ign. - Ignition
Ign. Gnd. - Ignition Ground
Ign. Mod. Sens. - Ignition Module Sensor
II - Instrumented Injector
IIA - Integrated Ignition Assembly
ILC - Idle Load Control
Ilium. - Illumination
IMCO - Improved Combustion System
IMPCO - Improved Combustion System
In. - Inches
In. - Input
Incand. - Incandescent
INCH Lbs. - Inch Pounds
Ind. - Indicator
Infl. - Inflate
Info. - Information
In. Hg - Inches of Mercury
Inhib. - Inhibitor
Inj. - Injector or Injection
Inst. - Instrument
Inst. Clstr. - Instrument Cluster
Int. - Interior
Interm. - Intermittent
Intgrtd. - Integrated
Intgrtn. - Integration
Intrpt. - Interrupt
Invrtr. - Inverter
IPC - Instrument Panel Cluster
IPS - Ignition Pressure Switch
IS - Idle Switch
ISC or ISCS - Idle Speed Control
ISC - Idle Speed Compensator
ISS - Idle Stop Solenoid
ITCS or ITS - Ignition Timing Control System
ITEC - ITEC Fuel System
ITVS - Ignition Timing Vacuum Switch
IVV - Idle Vacuum Valve
J
JAS - Jet Air System
J/B - Junction Box
Jmpr. - Jumper
Junc. - Junction
K
KAPWR - Keep Alive Power
kg - Kilograms
kg/cm 2 - Kilograms Per Square Centimeter
k/ohms - 1000 ohms
Key. - Keyless
KS - Knock Sensor
L
L - Liter
Lat. - Latched
Lbs. - Pounds
LCD - Liquid Crystal Display
LCV - Load Control Valve
L/D - Light Duty (Emissions)
LED - Light Emitting Diode
L. Fnt. - left Front
LFT - Lett
Lftgte. - Liftgate
LH - Left-hand
LH-AFC - Bosch LH-Jetronic
Lic. - License
Lk. - Lock
Lmtr. - Limiter
Lo. - Low
Lps. - Lamps
LR - Left Rear
Lt. - Light
Lt. Duty - Light Duty
Ltr. - Lighter
Ltr. - Limiter
Lug. - Luggage
Lvl. - Level
L4 - 4-Cylinder
L6 - 6-Cylinder
M
Ma - Milliamps
MAF - Mass Airflow
MAFS - Mass Airflow Sensor
MAFTS - Manifold Air/Fuel Temperature Sensor
Mag. - Magnetic
Maint. - Maintenance
MAJC - Main Air Jet Control
Man. - Manual
Man. - Manifold
Man. Stg. - Manual Steering
Man. Trans. - Manual Transaxle or Transmission
MAP - Manifold Absolute Pressure
MAT - Manifold Air Temperature
MCU - Microprocessor Control Unit
MCV - Mixture Control Valve
MEC - Motronic Engine Control
Mem. - Memory
Merc. - Mercury
Mesg. - Message
Mfd. - Microfarads
MFI - Mechanical Fuel Injection
MFI - Multi-Port Fuel Injection
MHC or MHCV - Manifold Heat Control Valve
Mic. - Microphone
MIG - Metal Inert Gas (Welding)
Mir. - Mirror
Mixt. - Mixture
mkg - Meter Kilogram
mm - Millimeters
Mod. - Module
Mon. - Monitor
MPC - Manifold Pressure Controlled Fuel Injection
MPH - Miles Per Hour
MPI - Multi-Point Injection
Mtr. - Motor
M/T - Manual Transaxle or Transmission
MTA - Managed Thermactor Air
MVS - Manifold Vacuum Switch
N
"N" - Neutral Position
NCA - No Color Available
Neut. - Neutral
NLV - Non-Linear Valve
NLVR - NLV Regulator
N.m - Newton Meter
No. or # - Number
Norm. - Normal
NOx - Oxides of Nitrogen
O
O - Oxygen
O 2 - Oxygen
OBC - On-Board Computer
OC - Oxidation Catalyst
O.D. - Outside Diameter
O/D - Overdrive
OL - Open Loop
Oper. - Operated
Opt. - Options or Optional
OS - Oxygen Sensor
OSAC - Orifice Spark Advance Control
OTCS - Over-Temperature Control System
OTS - Oil Temperature Switch
OXS or OXY - Oxygen Sensor
Ozs. - Ounces
P
"P" - Park Position
PACV - Pulse Air Check Valve
PAF - Pulse Air Feeder
PAI or PAIR - Pulse Air Injection
PAS - Pulse Air Solenoid or System
Pass. - Passenger
P/C - Printed Circuit
PCOV - Purge Control Valve
PCV - Positive Crankcase Ventilation
PCV - Purge Control Valve
PCVS - Positive Crankcase Ventilation Solenoid
PEVR - Power Enrichment Vacuum Regulator
PFI - Port Fuel Injection
PFI - Programmed Fuel Injection
PGCV - Purge Control Valve
PGM-FI - Programmed Fuel Injection
PHCV - Power Heat Control Valve
PHDV - Power Heat Delay Valve
PIP - Profile Ignition Pick-Up
Pkg. - Package
PLBS - Partial Lean Burn System
P/N - Park/Neutral
Pneu. - Pneumatic
Pnl. - Panel
Pos. - Positive
Postn. - Position
Pot. - Potentiometer
PPM - Parts Per Million
PPS - Ported Pressure Switch
PR-CV - Pressure Control Valve
Pres. - Pressure
Prgmr. - Programmer
Pri. - Primary
PRNDL - Park, Reverse, Neutral, Drive, Low
PROM - Programmable Read Only Memory
Prtl. - Partial
PS - Push Switch
P/S - Power Steering
psi - Pounds Per Square Inch
P/S Pres. Sw. - Power Steering Pressure Switch
PSV - Pulse Air Shutoff Valve
PTO - Power Take Off
Pts. - Pints
PV - Pulse Air Valve
PV - Purge Control Valve
PVA - Ported Vacuum Advance
PVBrk - Primary Vacuum Break
PVCS - Ported Vacuum Control System
PVCS - Power Valve Control System
PVFFC - Pressure/Vacuum Fuel Filler Cap
PVS - Ported Vacuum Switch
PVTS - Purge TVS
Pwr. - Power
Q
Qts. - Quarts
R
R - Rear
Rad. - Radiator
Rcvr. - Receiver
Rdcr. - Reducer
RDLV - Reverse Delay Valve
RDLVD - RDLV Dual
RDLVS - RDLV Single
RDO - Retard Delay Orifice
RDV or R-DLV - Retard Delay Valve
Recirc. - Recirculator
Reduct. - Reduction
Ref. - Reference
Reg. - Regulator
Rel. - Release
Res. - Resistor
Resist - Resistance
Retrac. - Retract or Retractor
Rev. - Revolution
RH or RTH - Right-hand
Rheo. - Rheostat
Rly. - Relay
Rly. Up - Relay Up
Rplnsg. - Replenishing
RPM - Revolutions Per Minute
RS - Reverse Spark
Rsm. - Resume
Rt. - Right
Rtd. - Retard
Rt. Fnt. - Right Front
Rtm. - Return
RV - Rollover Valve
RVSV - Rollover/Vapor Separator Valve
RWD - Rear Wheel Drive
S
SADV-TVS - Spark Advance TVS
SA-FV - Separator Assembly Fuel Vacuum
SAS - Secondary Air Supply
Satlt. - Satellite
SAVM - Spark Advance Vacuum Modulator
S/B - Seat Belt
SBC - Single Bed Catalytic
SC - Signal Conditioner
SC - Stratified Charge
SCC - Spark Control Computer
SCS - Speed Control Switch
SCS - Spark Control System
SCS - Speed Controlled Spark
SCTO - Spark Coolant Temperature Override
SDV - Spark Delay Valve
Sec. - Secondary
SEC ACT - Secondary Actuator
SEFI - Sequential Electronic Fuel Injection
SEGR - Sub EGR or Secondary EGR
Sel. - Selector or Selection
Sen. or Sens. - Sensor
Send. - Sender
Sfty. - Safety
Shld. - Shield
Sig. - Signal
SO - Sensor Override
Sol. - Solenoid
Sole-Vac. or SLV - Solenoid Vacuum
Sol. V. - Solenoid Valve
Spd. - Speed
Speedo. - Speedometer
SPFI - Sequential Port Fuel Injection
SPK - Spark
Spk. Ret. - Spark Retard
SP-TVS - Spark Thermal Vacuum Switch
SRDV or SRD-VLV - Spark Retard Delay Valve
SRS - Supplementary Restraint System
SS - Start Control System
SSC ACT - Stepped Speed Control Actuator
SSC SOL - Stepped Speed Control Solenoid
SSI - Solid State ignition
St. - Start
Stab. - Stabilizer
Sta. Wag. - Station Wagon
STC or STCS - Spark Timing Control
Std. - Standard
Stop Lt. - Stop Light
Strkr. - Striker
Strng. - Steering
Strtr. - Starter
STVS - Spark Thermal Vacuum Switch
STVS - Secondary Throttle Valve System
SUCS - Shift-Up Control System
Supp. - Supply
Susp. - Suspension
S-V - Sol-Vac
SVB - Secondary Vacuum Break
SVBrk - Secondary Vacuum Break
SV-CBV - Solenoid Valve Carb Bowl Vent
SVV - Solenoid Vent Valve
Sw. - Switch
Swover. - Switchover
SWV - Switching Valve
Sys. - System
T
TAB - Thermactor Air By-Pass
TAC - Thermostatic Air Cleaner
Tach. - Tachometer
TAD - Thermactor Air Diverter
Taillt. - Taillight
TBI - Throttle Body Injection
TBVV - Thermal Bowl Vent Valve
TC - Throttle Closer
TCC - Transmission Converter Clutch
TCCS - Toyota Computer Control System
TCDV - Thermal Check & Delay Valve
TC-DVLV - Torque Converter Delay Valve
TCE - Transmission Controlled EGR
TCS - Transmission Controlled Spark
TCS - Transmission Converter Switch
TC-TVS - Torque Converter TVS
TCV - Thermal Control Valve
TCVS - Torque Converter Vacuum Switch
TDC - Top Dead Center
TDS - Time Delay Sensor
Temp. - Temperature
TEMS - Toyota Electronic Modulated Suspension
Tens. - Tension
Tens. Rdcr. - Tension Reducer
Term. - Terminal
TES - Thermal Electric Switch
TFI - Thick Film Integrated
Therm. - Thermostat or Thermistor
THM - Turbo Hydra-Matic
Throt. - Throttle
TIC - Thermal Ignition Control Valve
TIDC - Thermostatic Ignition Distributor Control
TIG - Tungsten Inert Gas (Welding)
TIV - Thermal Idle Valve
TK - Throttle Kicker
TLA - Throttle Lever Actuator
TO - Thermal Override
TOCS - Throttle Opener Control System
TP - Throttle Positioner
TPBPV - Tank Pressure By-Pass Valve
TP-CV - Tank Pressure Control Valve
TPI - Tuned Port Injection
TPS or Th. Sens. - Throttle Position Sensor
TPSW - Throttle Position Switch
TPV - Throttle Poppet Valve
T-Q - Thermo-Quad
TR - Thermal Reactor
Trans. - Transaxle/Transmission
Transis. - Transistor
TRC - Throttle Return Control
TRC-SOL-CVLV - TRC Solenoid Control Valve
TrC-TVS - Transmission Lock-Up Converter TVS
TrC-VS - Transmission Lock-Up Converter Vacuum Switch
TRest - Tee Restrictor
Tripmdr. - Tripminder
Trnsmtr. - Transmitter
TS - Trapped Spark
TSD - Throttle Solenoid
TSP - Throttle Solenoid Positioner
Turbo - Turbocharger
TV - Thermo Valve
T.V. - Throttle Valve
TV-RST - Hose Tee Vacuum Restrictor
TVS - Thermal Vacuum Switch
TVV - Thermal Vent Valve
TVV - Temperature Vacuum System Valve
TWC - Three Way Catalytic
Twilt. - Twilight
2WD - 2-Wheel Drive
Typ. - Typical
U
UIC - Universal Integrated Circuit
Unlat. - Unlatched
UVS - Underhood Vent System
V
V - Volts
V6 - V6 Engine
V8 - V8 Engine
VA - Vacuum Amplifier
Vac. - Vacuum
VAC - Vacuum Advance Control
VACP - Vacuum Pump
VA-CTO - Vacuum Advance CTO
Vac.VV - Vacuum Vent Valve
Var. - Variable
VASC - Vacuum Advance Spark Control
VATS - Vehicle Anti-Theft System
VB - Vacuum Break
VCC - Viscous Clutch Converter
VCkV - Vacuum Check Valve
VCS - Vacuum Controlled Switch
VCV - Vacuum Control Valve
VDV or VDVLV - Vacuum Delay Valve
VDV - Vacuum Differential Valve
VDV - Vacuum Diverter Valve
Veh. - Vehicle
Vert. - Vertical
VHC - Vacuum Exhaust Heat Control Valve
VIN - Vehicle Identification Number
VIS - Vacuum Input Switch
VLDL or VLDV - Vacuum Delay Valve
Vlv. - Valve
VM - Vacuum Modulator
VMCV - Vacuum Modulator Check Valve
VMV - Vacuum Modulator Valve
VMVS - Vacuum Modulator Valve Switch
Volt. - Voltage
VOTM - Vacuum Operated Throttle Modulator
VP - Vacuum Pump
VPOC - Vacuum Pull-Off Choke
V. Pwr. - Vehicle Power
VR - Vacuum Reservoir
VRCkV - Vacuum Reverse Check Valve
VRDV - Vacuum Retard Delay Valve
VReser - Vacuum Reservoir
VRest - Vacuum Restrictor
VRS - Vacuum Regulator/Solenoid
VRS - Vacuum Retard Switch
VRV - Vacuum Reducer Valve
VRV - Vacuum Regulator Valve
VS - Vacuum Solenoid
VS - Vacuum Switch
VSA - Vacuum Switch Assembly
VSD - Vacuum Switch Dump
VSDV - Vacuum Source (or Signal) Dump Valve
V-RSR - Vacuum Reservoir
V-RST - Vacuum Restrictor
VSS - Vehicle Speed Sensor
VSV - Vacuum Solenoid Valve
VTK - Vacuum Throttle Kicker
VTM - Vacuum Throttle Modulator
VTP - Vacuum Throttle Positioner
VVA - Venturi Vacuum Amplifier
VVCS - Vacuum Vent Control System
VVCV - Vacuum Vent Control Valve
VVV - Vacuum Vent Valve
VVVac. - Vent Valve Vacuum
W
W/ - With
Warn. - Warning
W/B - Wheelbase
Wdo. - Window
Wip. - Wiper
W/O - Without
WOT - Wide Open Throttle
WOTC - WOT Cutout
WOTS or WOT-SW - WOT Switch
WOTV - WOT Valve
W/Shield - Windshield
Wshr. - Washer
WST - Wastegate
WSTGT ACT - Wastegate Actuator
W/W - Wiper/Washer
X
Xcvr. - Transceiver
Xmit. - Transmitter