GENERAL INFORMATION Emission Control Abbreviations

GENERAL INFORMATION

Emission Control Abbreviations

"A"
A/C

Air Conditioning

A/C-ISUS

A/C Idle Speed-Up Solenoid

AAI

om
Air Assist Injector

ACL
.c
Air Cleaner (Thermostatic Air Cleaner)
gn
ACL-AD

ACL Air Diverter

ia

ACL-BMS
rd

ACL Bimetallic Sensor

ca

ACL-CKV

ACL Check Valve

ACL-DV

ACL Delay Valve

ACL-PVS

ACL Ported Vacuum Switch

ACL-RDV

ACL Reverse Delay Valve

 GENERAL INFORMATION Emission Control Abbreviations

ACL-RDVS

ACL Reverse Delay Valve (Single)

ACL-TCV

ACL Thermal Control Valve

ACL-TS

ACL Temperature Sensor

ACL-TSOV

ACL Temperature Sensor Override Valve

om
ACL-TVS

ACL Thermal Vacuum Switch

ACL-TVV
.c
gn
ACL Thermal Vacuum Valve

ACL-VCDV
ia

ACL Vacuum Control Delay Valve

rd

ACL-VCV
ca

ACL Vacuum Control Valve

ACL-VM

ACL Vacuum Motor

ACL-WP

ACL Wax Pellet Type Motor

ADS

Anti-Dieseling Solenoid

AFS
 GENERAL INFORMATION Emission Control Abbreviations

Air/Fuel Ratio Sensor

AIH

Air Intake Heaters

AIH-TS

AIH Temperature Sensor

AIS

Air Injection System

AIS-ACV

om
AIS Air Control Valve

AIS-AMV

AIS Air Management Valve

.c
gn
AIS-ASS

AIS Air Switching Solenoid

ia

AIS-ASV
rd

AIS Air Switching Valve

ca

AIS-BPV

AIS By-Pass Valve

AIS-CKV

AIS Check Valve

AIS-CV

AIS Combination Valve

AIS-DV

AIS Diverter Valve

 GENERAL INFORMATION Emission Control Abbreviations

AIS-PAF

AIS Pulse Air Feeder

AIS-PM

AIS Pump Motor

AIS-PV

AIS Pneumatic Valve

AIS-RV

AIS Relief Valve

om
AIS-SOL

AIS Solenoid

AIS-SV
.c
gn
AIS Solenoid Valve

AIS-VCV
ia

AIS Vacuum Control Valve

rd

AIS-VSV
ca

AIS Vacuum Switching Valve

AIS-VT

AIS Vacuum Tank

AIS-VCV

AIS Vacuum Control Valve

AIS-VSV

AIS Vacuum Switching Valve

ALVW
 GENERAL INFORMATION Emission Control Abbreviations

Adjusted Loaded Vehicle Weight

AP

Air Pump Injection System

AP-ACV

AP Air Control Valve

AP-AMV

AP Air Management Valve

AP-ASRV

om
AP Air Switching Relief Valve

AP-ASS

AP Air Switching Solenoid

.c
gn
AP-ASV

AP Air Switching Valve

ia

AP-BPV
rd

AP By-Pass Valve
ca

AP-CKV

AP Check Valve

AP-CS

AP Control Solenoid

AP-DCTO

AP Dual Coolant Temperature Override

AP-DLY

AP Delay Valve
 GENERAL INFORMATION Emission Control Abbreviations

AP-DV

AP Diverter Valve

AP-EADV

AP Electric Air Control Diverter Valve

AP-EAMR

AP Electric Air Management Relay

AP-EAMS

AP Electric Air Management Solenoid

om
AP-EAP

AP Electric Air Pump

AP-EC
.c
gn
AP Electromagnetic Clutch

AP-ERLY
ia

AP Electric Air Pump Relay

rd

AP-RDV
ca

AP Reed Valve

AP-RV

AP Relief Valve

AP-SOV

AP Shut-Off Valve

AP-SV

AP Solenoid Valve

AP-SWV
 GENERAL INFORMATION Emission Control Abbreviations

AP Switchover Valve

AP-TV

AP Transmitting Valve

AP-VCS

AP Vacuum Control Solenoid

AP-VCV

AP Vacuum Control Valve

AP-VSV

om
AP Vacuum Switching Valve

A/T

Automatic Transmission
.c
gn
ATCV

Air Temperature Control Valve

ia

"B"
rd

BP/EGR
ca

Backpressure EGR System

BP/EGR-BPS

BP/EGR Backpressure Sensor

BP/EGR-BPT

BP/EGR Backpressure Transducer

BP/EGR-BPV

BP/EGR Backpressure Valve

BP/EGR-BS
 GENERAL INFORMATION Emission Control Abbreviations

BP/EGR Bleed Solenoid

BP/EGR-BVSV

BP/EGR Bimetallic Vacuum Switching Valve

BP/EGR-C

BP/EGR Controller

BP/EGR-CLR

BP/EGR Cooler

BP/EGR-CS

om
BP/EGR Control Solenoid

BP/EGR-CTO
.c
BP/EGR Coolant Temperature Override
gn
BP/EGR-CV

BP/EGR Control Valve

ia

BP/EGR-DCTO
rd

BP/EGR Dual Coolant Temperature Override

ca

BP/EGR-DS

BP/EGR Diagnostic Solenoid

BP/EGR-DSOL

BP/EGR Duty Solenoid

BP/EGR-DTVSW

BP/EGR Distributor Thermal Vacuum Switch

BP/EGR-DV

BP/EGR Delay Valve

 GENERAL INFORMATION Emission Control Abbreviations

BP/EGR-EET

BP/EGR Electric Transducer

BP/EGR-EPV

BP/EGR External Pressure Valve

BP/EGR-FDV

BP/EGR Forward Delay Valve

BP/EGR-LC

BP/EGR Load Control Valve

om
BP/EGR-PS

BP/EGR Position Sensor

BP/EGR-PVS
.c
gn
BP/EGR Ported Vacuum Switch

BP/EGR-RES
ia

BP/EGR Reservoir
rd

BP/EGR-RST
ca

BP/EGR Restrictor

BP/EGR-SOL

BP/EGR Solenoid

BP/EGR-TCTVS

BP/EGR Torque Converter Thermal Vacuum Switch

BP/EGR-TCV

BP/EGR Thermal Control Valve

BP/EGR-TCVLV
 GENERAL INFORMATION Emission Control Abbreviations

BP/EGR Temperature Control Valve

BP/EGR-TS

BP/EGR Temperature Sensor

BP/EGR-TVS

BP/EGR Thermal Vacuum Switch

BP/EGR-TVV

BP/EGR Thermal Vacuum Valve

BP/EGR-VCV

om
BP/EGR Vacuum Control Valve

BP/EGR-VM

BP/EGR Vacuum Modulator

.c
gn
BP/EGR-VRV

BP/EGR Vacuum Regulator Valve

ia

BP/EGR-VS
rd

BP/EGR Vacuum Switch

ca

BP/EGR-VSOL

BP/EGR Vent Solenoid

BP/EGR-VSV

BP/EGR Vacuum Switching Valve

"C"
C-4

Computer Controlled Catalytic Converter

CAC
 GENERAL INFORMATION Emission Control Abbreviations

Charge Air Cooler

CAS

Clean Air System

CB

Crankcase Breather

CBPS

Coasting By-Pass System

CBVC

om
Crankcase Breather Vapor Canister

CCIEV
.c
Coolant Controlled Idle Enrichment Valve
gn
CCS

Controlled Combustion System

ia

CCV
rd

Closed Crankcase Ventilation

ca

CD-REGVLV

Crankcase Depression Regulator Valve

CDRV

Crankcase Depression Relief Valve

CEAB

Cold Engine Air Bleed

CEAB-TVS

CEAB Thermal Vacuum Switch

 GENERAL INFORMATION Emission Control Abbreviations

CEAB-TVV

CEAB Thermal Vacuum Valve

CEC

Computerized Engine Controls

CESS

Cold Engine Sensor Switch

CETS

Cold Engine Temperature Switch

om
CFI

Continuous Fuel Injection

CMH
.c
gn
Cold Mixture Heater

CNG
ia

Compressed Natural Gas

rd

CO
ca

Carbon Monoxide

CO2

Carbon Dioxide

CPI

Central Port Injection

CRV

Coasting Richer Valve

CSI
 GENERAL INFORMATION Emission Control Abbreviations

Central Sequential Injection

CTAVS

Cold Temperature Activated Vacuum System

CTOX

Continous Trap Oxidizer

"D"
DCLV

Deceleration Valve

om
DCS

Deceleration Control System

DDI
.c
gn
Direct Diesel Injection

DFI
ia

Direct Diesel Injection

rd

DI
ca

Direct Injection

DKV

Deceleration Kick Valve

DMCV

Deceleration Mixture Control Valve

DMS

Dual Manifold System

DOHC
 GENERAL INFORMATION Emission Control Abbreviations

Dual Overhead Cam

DPF

Diesel Particulate Filter

DPFE

Differential Pressure Feedback EGR Valve

DPFEGR

Differential Pressure Feedback EGR Valve

DTM

om
Deceleration Throttle Modulator

"E"
EAIR
.c
gn
Electric Air Injection System

EAIR-DV
ia

EAIR Diverter Valve

rd

ECM
ca

Electronic Control Module

ECU

Electronic Control Unit

EDC

Electronic Diesel Control

EDS

Electronic Diesel System

EEC
 GENERAL INFORMATION Emission Control Abbreviations

Electronic Engine Control

EFE

Early Fuel Evaporation

EFE-CKV

EFE Check Valve

EFE-CV

EFE Control Valve

EFE-DTVS

om
EFE Delay Thermal Vacuum Switch

EFE-HTR

EFE Heater
.c
gn
EFE-HCV

EFE Heat Control Valve

ia

EFE-OTS
rd

EFE Oil Temperature Switch

ca

EFE-PTC

EFE Positive Temperature Coefficient (Intake Heater Grid)

EFE-PVS

EFE Ported Vacuum Switch

EFE-SOL

EFE Solenoid

EFE-TVS

EFE Thermal Vacuum Switch

 GENERAL INFORMATION Emission Control Abbreviations

EFE-TVV

EFE Thermal Vacuum Valve

EFE-VSV

EFE Vacuum Switching Valve

EFI

Electronic Fuel Injection

EFI-MA

EFI Mass Airflow Sensor

om
EFI-MAF

EFI Mass Airflow Sensor

EGR
.c
gn
Exhaust Gas Recirculation System

EGR-BCS
ia

EGR Boost Check Solenoid

rd

EGR-BPBV
ca

EGR By-Pass Backpressure Valve

EGR-BPT

EGR Backpressure Transducer

EGR-BPV

EGR By-Pass Valve

EGR-BS

EGR Bleed Solenoid

EGR-BSSV
 GENERAL INFORMATION Emission Control Abbreviations

EGR Boost Sensor Solenoid Valve

EGR-BVSV

EGR Bimetallic Vacuum Switching Valve

EGR-C

EGR Controller

EGR-CC

EGR Coolant Controlled

EGR-CLR

om
EGR Cooler

EGR-VSOL

EGR Vacuum Solenoid

.c
gn
EGR-CKV

EGR Check Valve

ia

EGR-CS
rd

EGR Control Solenoid

ca

EGR-CSOL

EGR Cut-Off Solenoid

EGR-CSV

EGR Control Solenoid

EGR-CTO

EGR Coolant Temperature Override

EGR-CTS

EGR Charge Temperature Sensor

 GENERAL INFORMATION Emission Control Abbreviations

EGR-CTSW

EGR Charge Temperature Switch

EGR-CTTS

EGR Coolant Temperature Thermoswitch

EGR-CV

EGR Control Valve

EGR-CVCV

EGR Constant Vacuum Control Valve

om
EGR-CVS

EGR Control Vent Solenoid

EGR-DC
.c
gn
EGR Digital Control

EGR-DCTO
ia

EGR Dual Coolant Temperature Override

rd

EGR-DPFE
ca

Differential Pressure Feedback EGR Sensor

EGR-DPFS

EGR Differential Pressure Feedback Sensor

EGR-DS

EGR Diagnostic Solenoid

EGR-DSOL

EGR Duty Solenoid

EGR-DTVS
 GENERAL INFORMATION Emission Control Abbreviations

EGR Delay Thermal Vacuum Switch

EGR-DTVSW

EGR Distributor Thermal Vacuum Switch

EGR-DV

EGR Delay Valve

EGR-EPRS

EGR Exhaust Pressure Regulator Solenoid

EGR-EPRV

om
EGR Exhaust Pressure Regulator Valve

EGR-EPV

EGR External Pressure Valve

.c
gn
EGR/EVAP-CSV

EGR/EVAP Control Solenoid Valve

ia

EGR-EVR
rd

EGR Vacuum Regulator

ca

EGR-EVRV

EGR Electronic Vacuum Regulator Valve

EGR-FDV

EGR Forward Delay Valve

EGR-FJS

EGR Floor Jet System

EGR-FPS

EGR Feedback Pressure Sensor

 GENERAL INFORMATION Emission Control Abbreviations

EGR-LCV

EGR Load Control Valve

EGR-MAP

EGR Manifold Absolute Pressure Sensor

EGR-PFE

EGR-PFE Sensor

EGR-PS

EGR Position Sensor

om
EGR-PSW

EGR Pulse Switch

EGR-PVS
.c
gn
EGR Ported Vacuum Switch

EGR-REG
ia

EGR Regulator
rd

EGR-RES
ca

EGR Reservoir

EGR-RST

EGR Restrictor

EGR-SC

EGR Signal Converter

EGR-SEC

EGR, Secondary

EGR-SEN
 GENERAL INFORMATION Emission Control Abbreviations

EGR Sensor

EGR-SOL

EGR Solenoid

EGR-SU

EGR Switchover Valve

EGR-SUB

Sub-EGR Valve

EGR-T

om
EGR Temperature Sensor

EGR-TC

EGR Transmission Controlled

.c
gn
EGR-TCTVS

EGR Torque Converter Thermal Vacuum Switch

ia

EGR-TCV
rd

EGR Thermal Control Valve

ca

EGR-TCVLV

EGR Temperature Control Valve

EGR-TRANS

EGR Transducer

EGR-TS

EGR Temperature Sensor

EGR-TSW

EGR Temperature Switch

 GENERAL INFORMATION Emission Control Abbreviations

EGR-TVD

EGR Throttle Valve Diaphragm

EGR-TVS

EGR Thermal Vacuum Switch

EGR-TVSOL

EGR Throttle Valve Solenoid

EGR-TVV

EGR Thermal Vacuum Valve

om
EGR-VA

EGR Vacuum Amplifier

EGR-VCV
.c
gn
EGR Vacuum Control Valve

EGR-VM
ia

EGR Vacuum Modulator

rd

EGR-VR
ca

EGR Vacuum Regulator

EGR-VRS

EGR Vacuum Regulator Solenoid

EGR-VRSV

EGR Vacuum Regulator Solenoid Valve

EGR-VRV

EGR Vacuum Regulator Valve

EGR-VS
 GENERAL INFORMATION Emission Control Abbreviations

EGR Vacuum Switch

EGR-VSDV

EGR Vacuum Switch Dump Valve

EGR-VSEN

EGR Vacuum Sensor

EGR-VSOL

EGR Vent Solenoid

EGR-VSS

om
EGR Vacuum Switching Solenoid

EGR-VSV

EGR Vacuum Switching Valve

.c
gn
EGR-VVCS

EGR Venturi Vacuum Control System

ia

EGRC
rd

EGR Control Solenoid

ca

EGRC-BPT

EGR Control Backpressure Transducer

EGRC-SV

EGR Control Solenoid Valve

EHOC

Electronically Heated Oxidation Catalyst

EHTWC

Electronically Heated Three-Way Catalyst

 GENERAL INFORMATION Emission Control Abbreviations

EI

Electronic Ignition System

EIS

Electronic Ignition System

ELB

Electronic Lean Burn

EPR

Exhaust Pressure Regulator

om
EPR-SOL

EPR Solenoid

ESA
.c
gn
Electronic Spark Advance

EVAP
ia

Fuel Evaporative System

rd

EVAP-AAC
ca

EVAP Auxiliary Air Control

EVAP-BPSV

EVAP By-Pass Solenoid Valve

EVAP-BVSV

EVAP Bimetallic Vacuum Switching Valve

EVAP-CAV

EVAP Canister Air Valve

EVAP-CCV
 GENERAL INFORMATION Emission Control Abbreviations

EVAP Control Canister Close Valve

EVAP-CCVSV

EVAP Control Canister Vent Shut Valve

EVAP-CCVVSV

EVAP Closed Canister Valve Vacuum Switching Valve

EVAP-CDCV

EVAP Canister Drain Cut Valve

EVAP-CKV

om
EVAP Check Valve

EVAP-CPCS
.c
EVAP Canister Purge Control Solenoid
gn
EVAP-CPCV

EVAP Canister Purge Control Valve

ia

EVAP-CPRV
rd

EVAP Canister Purge Regulator Valve

ca

EVAP-CPSV

EVAP Canister Vent Shut Valve

EVAP-CPT

EVAP Canister Purge Timer

EVAP-CPTVS

EVAP Canister Purge Thermal Vacuum Switch

EVAP-CPV

EVAP Canister Vent Valve

 GENERAL INFORMATION Emission Control Abbreviations

EVAP-CPVCSV

EVAP Canister Purge Volume Control

EVAP-CPVDV

EVAP Canister Purge Vacuum Delay Valve

EVAP-CS

EVAP Control Solenoid

EVAP-CSPS

EVAP Control System Pressure Sensor

om
EVAP-CST

EVAP Canister Surge Tank

EVAP-CVCS
.c
gn
EVAP Canister Vent Control Solenoid

EVAP-CVCV
ia

EVAP Canister Vent Control Valve

rd

EVAP-CVS
ca

EVAP Canister Vent Solenoid

EVAP-CVSV

EVAP Carburetor Vent Switching Valve

EVAP-CVV

EVAP Canister Vent Valve

EVAP-DCTO

EVAP Dual Coolant Temperature Override

EVAP-DPS
 GENERAL INFORMATION Emission Control Abbreviations

EVAP Differential Pressure Sensor

EVAP-EV

EVAP Emission Valve

EVAP-FBVV

EVAP Fuel Bowl Vent Valve

EVAP-FBVS

EVAP Fuel Bowl Vent Solenoid

EVAP-FLS

om
EVAP Fuel Level Sensor

EVAP-FOLV

EVAP Fuel Overflow Limiter Valve

.c
gn
EVAP-FS

EVAP Flow Switch

ia

EVAP-FSV
rd

EVAP Flow Switchover Valve<

ca

EVAP-FTPCSV

EVAP Fuel Tank Pressure Control Solenoid Valve

EVAP-FTPS

EVAP Fuel Tank Pressure Sensor

EVAP-FTS

EVAP Fuel Temperature Sensor

EVAP-FVCV

EVAP Fuel Vapor Control Valve

 GENERAL INFORMATION Emission Control Abbreviations

EVAP-FVS

EVAP Fuel Vapor Separator

EVAP-FVV

EVAP Fuel Vent Valve

EVAP-IVS

EVAP Inner Vent Solenoid

EVAP-LDP

EVAP Leak Detection Pump

om
EVAP-LDPAF

EVAP Leak Detection Pump Air Filter

EVAP-LDPF
.c
gn
EVAP Leak Detection Pump Filter

EVAP-LDPVV
ia

EVAP Leak Detection Pump Vent Valve

rd

EVAP-LSEP
ca

EVAP Liquid Separator

EVAP-NVLD

EVAP Natural Vacuum Leak Detection

EVAP-ORVR

Evaporative On-Board Refueling Vapor Recovery System

EVAP-ORVRFTVRV

EVAP-ORVR Fuel Tank Vapor Recirculation

EVAP-OVCV
 GENERAL INFORMATION Emission Control Abbreviations

EVAP Outer Vent Control Valve

EVAP-OWV

EVAP One-Way Valve

EVAP-PCSV

EVAP Purge Cut-Off Solenoid Valve

EVAP-PFS

EVAP Purge Flow Sensor

EVAP-PFSVVSV

om
EVAP Purge Flow Switching Valve Vacuum Switching Valve

EVAP-PRRV
.c
EVAP Pressure Relief Rollover Valve
gn
EVAP-PSVVSV

EVAP Pressure Switching Valve Vacuum Switching Valve

ia

EVAP-PSOL
rd

EVAP Purge Solenoid

ca

EVAP-PSSV

EVAP Pressure Switching Solenoid

EVAP-PSVVSV

EVAP Pressure Switching Valve Vacuum Switching Valve

EVAP-PV

EVAP Purge (Frequency) Valve

EVAP-PVS

EVAP Ported Vacuum Switch

 GENERAL INFORMATION Emission Control Abbreviations

EVAP-RV

EVAP Rollover Valve

EVAP-RV/FTPS

EVAP Rollover Valve/Fuel Tank

EVAP-RVSV

EVAP Rollover Vapor Separator Valve

EVAP-SNR

EVAP Canister Sensor

om
EVAP-SOV

EVAP Shutoff Valve

EVAP-SSV
.c
gn
EVAP Shut-Off Solenoid Valve

EVAP-SV
ia

EVAP Solenoid Valve

rd

EVAP-TS
ca

EVAP Temperature Switch

EVAP-TPBPV

EVAP Tank Pressure By-Pass Valve

EVAP-TPCS

EVAP Tank Pressure Control Solenoid

EVAP-TPCV

EVAP Tank Pressure Control Valve

EVAP-TRWV
 GENERAL INFORMATION Emission Control Abbreviations

EVAP Tree-Way Valve

EVAP-TV

EVAP Thermal Valve

EVAP-TVS

EVAP Thermal Vacuum Switch

EVAP-TWV

EVAP Two-Way Valve

EVAP-VC

om
EVAP Vapor Canister

EVAP-VCAT

EVAP Vapor Canister Air Tank

.c
gn
EVAP-VCF

EVAP Vapor Canister Filter

ia

EVAP-VCTV
rd

EVAP Vacuum Control Valve

ca

EVAP-VCV

EVAP Vacuum Canister Valve

EVAP-VCVS

EVAP Vapor Canister Vent Solenoid

EVAP-VM

EVAP Vacuum Motor

EVAP-VPS

EVAP Vapor Pressure Sensor

 GENERAL INFORMATION Emission Control Abbreviations

EVAP-VPSVSV

EVAP Vapor Pressure Sensor Vacuum Switching Valve

EVAP-VS

EVAP Vacuum Sensor

EVAP-VSOL

EVAP Ventilation Solenoid

EVAP-VSOL/LDP

EVAP Ventilation Solenoid/Leak Detection Pump

om
EVAP-VST

EVAP Vacuum Surge Tank

EVAP-VSV
.c
gn
EVAP Vacuum Switching Valve

EVAP-VV
ia

EVAP Ventilation Valve

rd

EVRS
ca

EGR Vacuum Regulator Solenoid

"F"
FBC

Feedback Carburetor

FCOV

Fuel Change Over Valve

FF

Flex Fuel
 GENERAL INFORMATION Emission Control Abbreviations

FF-CKV

Fuel Fill Check Valve

FF-FCV

Fuel Tank Fuel Cut-Off Valve

FF-FLVV

Fuel Tank Fill Limit Vent Valve

FGOV

Fuel Gravity/Overflow Valve

om
FGVV

Fuel Gravity Vent Valve

FI
.c
gn
Fuel Injected

FICD
ia

Fast Idle Control Device

rd

FISR
ca

Fast Idle Solenoid Relay

FLV

Fill Limit Valve

FLVV

Fill Limiting Vent Valve

FP-CKV

Fill Pipe Check Valve

FP-RV
 GENERAL INFORMATION Emission Control Abbreviations

Fill Pipe Rollover Valve

FR

Fill Pipe Restrictor

FT-FLVV

Fuel Tank Fill Limit Vent Valve

FT-GVV

Fuel Tank Grade Vent Valve

FT-OPRV

om
Fuel Tank Over Pressure Vent Valve

FT-PCV

Fuel Tank Pressure Control Valve

.c
gn
FT-VCV

Fuel Tank Vapor Control Valve

ia

FT-VRV
rd

Fuel Tank Vapor Recirculation Valve

ca

FTCV

Fuel Tank Check Valve

FTDPS

Fuel Tank Differential Pressure Sensor

FTEV

Fuel Tank EVAP Valve

FTPS

Fuel Tank Pressure Sensor

 GENERAL INFORMATION Emission Control Abbreviations

FTT

Fuel Tank Temperature Sensor

FTTS

Fuel Tank Temperature Sensor

FTVPRV

Fuel Tank Ventilation Pressure Retention Valve

FTVV

Fuel Tank Vent Valve

om
FVV

Fuel Vapor Valve

"G"
.c
gn
GVWR

Gross Vehicle Weight Rating

ia

"H"
rd

HAC
ca

High Altitude Compensator

HAFS

Heated Air Fuel Ratio Sensor

HAI

Hot Air Intake

HAS

High Altitude System

HC
 GENERAL INFORMATION Emission Control Abbreviations

Hydrocarbons

HCAC-VSV

Hydrocarbon Absorber Catalyst Vacuum Switching Valve

HDC

Heavy Duty Cooling

HDC-CTO

HDC Coolant Temperature Override

HFM-SFI

om
Hot Film Engine Management SFI

HIC

Hot Idle Compensator

.c
gn
HIM

Heated Intake Manifold

ia

HO
rd

High Output
ca

HO2S

Heated Oxygen Sensor

HP

High Performance

HP

Horsepower

HPCA

Housing Pressure Cold Advance

 GENERAL INFORMATION Emission Control Abbreviations

HSC

High Swirl Combustion

"I"
IAC

Idle Air Control Valve

IACV-SW

IACV Switch

ICOM

om
Idle Compensator

IDI

Indirect Diesel Injection

.c
gn
IES

Idle Enrichment System

ia

IMCO
rd

Improved Combustion System

ca

"K"
KS

Knock Sensor

"L"
LH-SFI

Hot Wire Sequential Multiport Fuel Injection

LVFD

Liquid/Vapor Fuel Discriminator

 GENERAL INFORMATION Emission Control Abbreviations

LVW

Loaded Vehicle Weight

"M"
MD-TICS

Timing & Injection rate Control System

ME-SFI

Motor Electronics Sequential Fuel Injection

MFI

om
Multiport Fuel Injection

MFI-MAF

MFI Mass Airflow Sensor

.c
gn
MFLS

Main Fuel Level Sensor

ia

MI
rd

Mechanical Fuel Injection

ca

MIL

Malfunction Indicator Light

M/T

Manual Transmission

"N"
NAC

Nitrogen Oxides (NOx) Adsorbing Catalyst

NLV
 GENERAL INFORMATION Emission Control Abbreviations

Non-Linear Valve

NOS

NOx Sensor

NOx

NOx Emission Control

NOxC

Nitrogen Oxide Catalyst

NOxS

om
Nitrogen Oxide Sensor

NSC
.c
Nitrogen Oxides (NOx) Storage Catalyst
gn
"O"
OBD
ia

On-Board Diagnostic System

rd

PBD (F)/(P)
ca

Full/Partial On-Board Diagnostic

OC

Oxidation Catalytic Converter

OHC

Overhead Cam

ORVR

On-Board Refueling Vapor Recovery

ORVR-COV
 GENERAL INFORMATION Emission Control Abbreviations

ORVR Cut-Off Valve

ORVR-CV

ORVR Control Valve

ORVR-FMV

ORVR Flow Management Valve

ORVR-FTVCV

ORVR Fuel Tank Vapor Control Valve

ORVR-FTVRV

om
ORVR Fuel Tank Vapor Recirculation Valve

ORVR-LV

ORVR Leveling Valve

.c
gn
ORVR-OCKV

ORVR Overfill Check Valve

ia

ORVR-RCV
rd

ORVR Refueling Control Valve

ca

ORVR-VCV

ORVR Vapor Cut Valve

ORVR-VRV

ORVR Vapor Recirculating Valve

ORVR-VSV

ORVR Vent Shut Valve

ORVR-VV

ORVR Vent Valve

 GENERAL INFORMATION Emission Control Abbreviations

OVCV

Outer Vent Control Valve

O2S

Oxygen Sensor

"P"
PAIR

Pulsed Secondary Air Injection

PAIR-ABV

om
PAIR Anti-Backfire Valve

PAIR-ACOV

PAIR Air Cut-Off Valve

.c
gn
PAIR-ACS

PAIR Air Control Solenoid

ia

PAIR-ACV
rd

PAIR Air Control Valve

ca

PAIR-AIV

PAIR Air Injection Valve

PAIR-ASCS

PAIR Air Suction Control Solenoid

PAIR-ASOV

PAIR Air Shutoff Valve

PAIR-ASS

PAIR Air Switching Solenoid

 GENERAL INFORMATION Emission Control Abbreviations

PAIR-ASV

PAIR Air Switching Valve

PAIR-ASVL

PAIR Air Suction Valve

PAIR-AVCS

PAIR Air Valve Control Solenoid

PAIR-CSV

PAIR Control Solenoid Valve

om
PAIR-CKV

PAIR Check Valve

PAIR-DV
.c
gn
PAIR Diverter Valve

PAIR-PAF
ia

PAIR Pulse Air Feeder

rd

PAIR-PAV
ca

PAIR Pulse Air Valve

PAIR-RES

PAIR Resonator

PAIR-RV

PAIR Reed Valve

PAIR-SCSV

PAIR Swirl Control Solenoid Valve

PAIR-SCV
 GENERAL INFORMATION Emission Control Abbreviations

PAIR Swirl Control Valve

PAIR-SOL

PAIR Solenoid

PAIR-VSV

PAIR Vacuum Switching Valve

PCM

Powertrain Control Module

PCV

om
Positive Crankcase Ventilation

PCV-DOV

PCV Dual Orifice Valve

.c
gn
PCV-HCB

PCV Heated Crankcase Breather

ia

PCV-HE
rd

PCV Heating Element

ca

PCV-PRV

PCV Pressure Regulator Valve

PCV-SOL

PCV Solenoid

PEVR

Power Enrichment Vacuum Regulator

PPM

Parts Per Million

 GENERAL INFORMATION Emission Control Abbreviations

PTOX

Periodic Trap Oxidizer

PURCV

Purge Crankcase Ventilation

PVCS

Ported Valve Control System

PVCS-A

PVCS Actuator

om
PVCS-CS

PVCS Control Solenoid

PVLCS
.c
gn
Power Valve Control System

"R"
ia

ROV
rd

Rollover Valve
ca

"S"
SAI-SV

Secondary Air Injection Shutoff Valve

SC

Supercharged or Super Charger

SC MFI

Supercharged Multiport Fuel Injection

SCR
 GENERAL INFORMATION Emission Control Abbreviations

Selective Catalytic Reduction

SCSV

Swirl Control Solenoid Valve

SCV

Swirl Control Valve

SCV-A

SCV Actuator

SFI

om
Sequential Multiport Fuel Injection

SFI-MAF

SFI Mass Airflow Sensor

.c
gn
SFLS

Sub-Fuel Level Sensor

ia

SOHC
rd

Single Overhead Cam

ca

SPK

Spark Controls

SPK-AVM

SPK Advance Vacuum Modulator

SPK-BVSV

SPK Bimetal Vacuum Switching Valve

SPK-CC

SPK Computer Controlled

 GENERAL INFORMATION Emission Control Abbreviations

SPK-CKV

SPK Check Valve

SPK-CSSA

SPK Cold Start Spark Advance System

SPK-CSSH

SPK Cold Start Spark Hold System

SPK-CTO

SPK Coolant Temperature Override

om
SPK-DAVS

SPK Distributor Vacuum Advance Solenoid

SPK-DCKV
.c
gn
SPK Distributor Check Valve

SPK-DCTO
ia

SPK Dual Coolant Temperature Override

rd

SPK-DDD
ca

SPK Dual Diaphragm Distributor

SPK-DMV

SPK Distributor Modulator Valve

SPK-DPD

SPK Dual Point Distributor

SPK-DPVS

SPK Distributor Ported Vacuum Switch

SPK-DRCV
 GENERAL INFORMATION Emission Control Abbreviations

SPK Distributor Retard Control Valve

SPK-DRS

SPK Distributor Retard Solenoid

SPK-DSVMV

SPK Distributor Spark Vacuum Modulator Valve

SPK-DTVS

SPK Distributor Thermal Vacuum Switch

SPK-DTVV

om
SPK Distributor Thermal Vacuum Valve

SPK-DV

SPK Delay Valve

.c
gn
SPK-DVA

SPK Distributor Vacuum Advance

ia

SPK-DVAS
rd

SPK Distributor Vacuum Advance Solenoid

ca

SPK-DVCS

SPK Distributor Vacuum Control Solenoid

SPK-DVCSW

SPK Distributor Vacuum Controlled Switch

SPK-DVCV

SPK Distributor Vacuum Control Valve

SPK-DVDV

SPK Distributor Vacuum Delay Valve

 GENERAL INFORMATION Emission Control Abbreviations

SPK-DVRS

SPK Distributor Vacuum Retard Switch

SPK-DVRV

SPK Distributor Vacuum Regulating Valve

SPK-DVVV

SPK Distributor Vacuum Vent Valve

SPK-EAVS

SPK Electronically Actuated Vacuum Switch

om
SPK-EDM

SPK Electronic Distributor Modulator

SPK-EI
.c
gn
SPK Electronic Ignition

SPK-ESA
ia

SPK Electronic Spark Advance

rd

SPK-ESC
ca

SPK Electronic Spark Control (Retard)

SPK-ESS

SPK Electronic Spark Selection

SPK-EST

SPK Electronic Spark Timing

SPK-FDV

SPK Forward Delay Valve

SPK-HPCA
 GENERAL INFORMATION Emission Control Abbreviations

SPK Housing Pressure Cold Advance

SPK-ITCS

SPK Ignition Timing Control System

SPK-ITVS

SPK Ignition Timing Vacuum Switch

SPK-NLVR

SPK Non-Linear Vacuum Regulator

SPK-OSAC

om
SPK Orifice Spark Advance Control

SPK-PVA

SPK Ported Vacuum Advance

.c
gn
SPK-PVS

SPK Ported Vacuum Switch

ia

SPK-RDO
rd

SPK Retard Delay Orifice

ca

SPK-RDV

SPK Reverse Delay Valve

SPK-RDVD

SPK Reverse Delay Valve (Dual)

SPK-RDVLV

SPK Retard Delay Valve

SPK-RDVS

SPK Reverse Delay Valve (Single)

 GENERAL INFORMATION Emission Control Abbreviations

SPK-RETS

SPK Retard Switch

SPK-SC

SPK Speed Controlled

SPK-SOL

SPK Solenoid

SPK-SRRV

SPK Spark Relay Regulator Valve

om
SPK-TAVIA

SPK Temperature Activated Vacuum Ignition Advance

SPK-TCS
.c
gn
SPK Transmission Controlled Spark

SPK-TCSYS
ia

SPK Timing Control System

rd

SPK-TIDC
ca

SPK Thermostatic Ignition Distributor Control

SPK-TV

SPK Thermal Valve

SPK-TVS

SPK Thermal Vacuum Switch

SPK-VACTO

SPK Vacuum Advance Coolant Temperature Override

SPK-VAS
 GENERAL INFORMATION Emission Control Abbreviations

SPK Vacuum Advance Solenoid

SPK-VAV

SPK Vacuum Advance Valve

SPK-VR

SPK Vacuum Retard

SPK-VRSW

SPK Vacuum Retard Switch

SPK-VSV

om
SPK Vacuum Switching Valve

SPK-VTCS

SPK Vacuum Timing Control System

.c
gn
SPL

Smoke Puff Limiter

ia

SRI
rd

Service Reminder Indicator

ca

SSCA

Stepped Speed Control Actuator

SSCS

Stepped Speed Control Solenoid

STS

Service Throttle Soon Light

STVS

Secondary Throttle Valve System

 GENERAL INFORMATION Emission Control Abbreviations

SUB-O2S

Sub-Oxygen Sensor

SUB-TWC

Sub Three-Way Catalytic Converter

"T"
TAA

Turbo Air-To-Air

TAA

om
Throttle Actuator Assembly

TAB

Thermactor Air By-Pass

.c
gn
TAD

Thermactor Air Diverter

ia

TBI
rd

Throttle Body Injection

ca

TBPCS

Throttle By-Pass Control System

TC

Turbo Charger

TCC

Torque Converter Clutch

TCCL

Torque Converter Control

 GENERAL INFORMATION Emission Control Abbreviations

TCD

Throttle Closing Dashpot

TC-DV

TC Delay Valve

TC-TVC

TC Thermal Vacuum Switch

TC-VS

TC Vacuum Switch

om
TD

Thermactor Diverter

TFT
.c
gn
Tank Fuel Temperature Sensor

TICV
ia

Thermal Ignition Control Valve

rd

TIV
ca

Thermal Idle Valve

TK

Throttle Kicker

TLUC

Transmission Lock-Up Converter

TLUC-TVS

TLUC Thermal Vacuum Switch

TLUC-VS
 GENERAL INFORMATION Emission Control Abbreviations

TLUC Vacuum Switch

TM

Throttle Modulator

TOS

Throttle Opener System

TP

Throttle Positioner

TPI

om
Tuned Port Fuel Injection

TPV

Throttle Poppet Valve

.c
gn
TR

Thermal Reactor
ia

TRC
rd

Throttle Return Control

ca

TRCS

Throttle Return Control Solenoid

TRCTL

Throttle Return Control Throttle Lever Actuator

TRSCV

Throttle Return Solenoid Control Valve

TRTVV

Temperature Regulator Thermal Vacuum Valve

 GENERAL INFORMATION Emission Control Abbreviations

TRVV

Transmission Vacuum Valve

TSOL

Throttle Solenoid

TVISD

Throttle Vacuum Idle Speed Diaphragm

TVM

Transmission Vacuum Modulator

om
TWC

Three-Way Catalytic Converter

TWC+OC
.c
gn
Three-Way + Oxidation Catalytic Converter

"V"
ia

VA
rd

Vacuum Advance Unit

ca

VAC-AMP

Vacuum Amplifier

VA-CTO

VA Coolant Temperature Override

VCV

Vacuum Cut Valve

VCV-BV

VCV By-Pass Valve

 GENERAL INFORMATION Emission Control Abbreviations

VLFR

Vent Line Flow Restrictor/Anti-Trickle Fill Valve

"W"
WU

Warm-Up Catalyst

WU-OC

Warm-Up Oxidation Converter

WU-TWC

om
Warm-Up Three-Way Catalytic Converter

.c
gn
ia
rd
ca