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E4OD
Electronic 4-Speed Overdrive
EAC
Electronic Air Control (replaced with AIR)
EACV
Electronic Air Control Valve
EAIR
Electronic Secondary Air Injection
EAS
Electronic Air Switching, directs airflow to catalytic converter or exhaust ports of the engine.
EBCM
Electronic Brake Control Module
EBP
Exhaust Back :Pressure
EBTCM
Electronic Brake T/C Module
EC
Engine Control
ECA
Electronic Control Assembly. Ford's engine controlling computer.
ECC
Electronic Climate Control
ECCS
Electronic Concentrated Control System
ECI
Extended Compressor at Idle
ECIT
Electronic Control Ignition Timing
ECL
Engine Coolant Level
ECM
Engine Control Module properly call a Powertrain Control Module.
ECS
Evaporation Control System (Chrysler)
ECS
Emission Control System
ECT
Engine Coolant Temperature sensor or circuit.
ECU
Electronic Control Unit
EDF
Electro-Drive Fan relay or its circuit.
EDIS
Electronic Direct Ignition System (replaced with EI)
EDM
Electronic Distributor Modulator (Ford)
EEC
Electronic Engine Control (Ford)
EEC-I
Control of Ignition Timing
EEC-II
Control of Ignition Timing and Fuel Delivery Through a Feed Carburetor System
EEC-III
Control of Ignition Timing and Fuel Delivery Through a Central Fuel Injection System
EEC-IV
Electronic Engine Control design 4. A computer controlled system of engine control used on Ford. Control of Ignition Timing and Fuel Delivery Through an Electronic Fuel Injection System
EECS
Evaporative Emission Control System
EEGR
Electronic Exhaust Gas Recirculation valve (Sonic).
EEGR Monitor
Electronic EGR Test
EEPROM
Electronically Erasable Programmable Read Only Memory
EESS
Evaporative Emission Shed System (Ford)
EET
Electronic Exhaust Gas Recirculation Transducer.
EEVIR
Evaporator Equalized Values in Receiver
EFC
Electronic Feedback Carburetor (Chrysler)
EFC
Electronic Fuel Control
EFCA
Electronic Fuel Control Assembly (Ford)
EFE
Early Fuel Evaporation
EFI
Electronic Fuel Injection
EFT
Engine Fuel Temperature
EFV
Early Fuel Evaporation
EGC
Exhaust Gas Check Valve (Ford)
EGO
Exhaust Gas Oxygen Sensor (Ford)
EGOR
EGO Signal Return (Ford)
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 (Mazda)
EGRT
Exhaust Gas Recirculation Temperature
EGRV
Exhaust Gas Recirculation Vent Solenoid
EGTS
Exhaust Gas Temperature Switch (replaced with EGRT)
EH
Electro-Hydraulic
EHC
Exhaust Heat Control vacuum solenoid or its circuit.
EI
Integrated Electronic Ignition System
EIC
Electronic Instrument Cluster.
EICV
Electronic Idle Control Valve
ELB
Electronic Lean Burn (Chrysler)
ELB (ELECTRONIC LEAN BURN)
An electronic ignition system designed to control ignition timing by firing an extremely lean air/fuel mixture.
ELC
Electronic Level Control
ELCD
Evaporative Loss Control Device
ELECTRIC FUEL PUMPS
Two electric fuel pump systems are used by Chrysler Motors vehicles: a high-pressure in-tank pump is used for certain high-pressure fuel injection systems, and a low-pressure in-tank pump is used for low-pressure fuel injection systems.
ELECTROMAGNETIC
A device which utilizes electronic and magnetic principles in its composition and operation.
ELECTROMECHANICAL
A device which utilizes electronic and mechanical principles in its composition and operation.
ELECTRONIC
Term used to describe an arrangement of conductors, semiconductors, and other components which accomplishes the control of system or devices through the use of electrical signals.
Electronic Control Unit
Processes input information to trigger ignition control module.
Electronic Feedback Carburetor
Utilizes an electronic signal, generated by an exhaust gas oxygen sensor to precisely control air/fuel mixture ratio in the carburetor.
ELECTRONIC FEEDBACK CARBURETOR (EFC)
Electronic Feedback Carburetor. Utilizes an electronic signal, generated by an exhaust gas oxygen sensor to precisely control air/fuel mixture ratio in the carburetor.
ELECTRONIC FUEL CONTROL
A computer control system was introduced on 1981 front wheel drive vehicles to control fuel and ignition systems through six sub-systems.
Electronic Fuel Injection
Electronic Fuel Injection. Computer controlled fuel injection system. On Ford EFI uses injectors in each intake port and CFI uses an injector in the throttle body.
ELECTRONIC SPARK ADVANCE (ESA)
An electronic ignition system, under control of the vehicle's on-board computer, which controls ignition timing and spark advance.
ELECTRONIC SPARK CONTROL
Used to retard spark advance if detonation occurs.
ELECTRONIC SPARK CONTROL (ESC)
A redesigned version of the ELB electronic ignition system.
ELECTRONIC SPARK TIMING
PCM controlled timing of the ignition spark.
EM
Engine Modification
EMB
Electromagnetic Brakes
EMF
Electromotive Force (voltage)
EMI
Electromagnetic Interference
EMR
Electronic Module Retard, controls spark retard.
EN
Generator (Alternator)
Enabling Criteria
Each Monitor is designed to test and monitor the operation of a specific part of the vehicle's emissions system (EGR system, oxygen sensor, catalytic converter, etc.). A specific set of "conditions" or "driving procedures" must be met before the computer can command a Monitor to run tests on its related system. These "conditions" are known as "Enabling Criteria." The requirements and procedures vary for each Monitor. Some Monitors only require the ignition key to be turned "On" for them to run and complete their diagnostic testing. Others may require a set of complex procedures, such as, starting the vehicle when cold, bringing it to operating temperature, and driving the vehicle under specific conditions before the Monitor can run and complete its diagnostic testing.
ENERGIZED
The condition of an electrical circuit having the electric current or source turned on.
ENGINE CONTROL MODULE
A microprocessor based device which contains electronic circuitry to control and monitor air/fuel and emission systems, and aid in diagnostics.
ENGINE CONTROL SYSTEM
A computer control system first used on 2.2L electronic throttle body fuel injected (TBI) vehicles to control fuel, ignition, and emission control systems through six sub-systems.
ENGINE RUNNING TEST MODE
The diagnostic mode used to read the output signals of specific sensors to the vehicle's on-board computer when the engine is idling. A SCAN Tool must be used during this test. The SCAN Tool displays the current operating condition of specific sensors and switches (Fault Codes are not generated during this test).
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 (Ford)
EPROM
Erasable Programmable Read Only Memory.
EPT
EGR Pressure Transducer (replaced with PFE)
ER
Engine running, used on some Ford system tests.
ERS
Engine RPM Sensor.
ESA
Electronic Spark Advance (Chrysler)
ESC
Electronic Spark Control System (Ford)
ESD
Electrostatic Discharge
ESS
Electronic Spark Selection (Cadillac)
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 or its circuit.
EVR
EGR Vacuum Regulator or its circuit.
EVRV
Electronic Vacuum Regulator Valve. Controls EGR vacuum.
EXH
Exhaust
EXHAUST GAS OXYGEN SENSOR
Sensor that changes its voltage output as exhaust gas oxygen content changes as compared to oxygen content of the atmosphere. The constantly changing electrical signal is used to control fuel mixture.
EXHAUST GAS RECIRCULATION
Procedure where a small amount of exhaust gas is readmitted to combustion chamber to reduce peak combustion temperatures, thus reducing NOx.
Exhaust Gas Recirculation
A procedure in which inert exhaust gases are recirculated to the combustion chamber to cool combustion temperatures and reduce nitrous oxides in exhaust.
EXHAUST HEAT CONTROL VALVE
A valve which routes hot exhaust gases to the intake manifold heat riser during cold engine operation. The valve is controlled either by a thermostat or by engine vacuum.
