Frequently Used EEC-IV Abbreviations

Article written by Skye Nott. Published on 2010-10-18
Ford First Library – Service:Electrical and Instruments Section
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Released under the terms of the CC Attribution-NonCommercial-ShareAlike 2.5 License

Abbreviation	Definition
A/C	Air Conditioning
ACCS	A/C Cycling Switch
ACC	A/C Clutch Compressor
ACT	Air Charge Temperature sensor
ACV	Thermactor Air Control Valve
AXOD	Automatic Transaxle Overdrive
BOO	Brake On/Off switch
BP	Barometric Pressure sensor
CANP	Canister Purge solenoid
CCO	Converter Clutch Override
CFI	Central Fuel Injection
CID	Cylinder Identification sensor
CKT	Circuit
DIS	Direct Ignition System
DVOM	Digital Volt/Ohm Meter
ECA	Electronic Control Assembly (processor, computer)
ECT	Engine Coolant Temperature sensor
EDF	Electric Drive Fan relay assembly
EED	Electronic Engine Control
EGO	Exhaust Gas Oxygen sensor (see HEGO)
EGR	Exhaust Gas Recirculation system
EGRC	EGR Control solenoid or system
EGRV	EGR Vent solenoid or system
EVP	EGR Position sensor
EVR	EGR Valve Regulator
FI	Fuel Injector or Fuel Injection
FP	Fuel Pump
FPM	Fuel Pump Monitor
GND or GRND	Ground
HEDF	High Speed Electro Drive Fan relay or circuit
HEGO	Heated EGO sensor
HEGOG	HEGO Ground circuit
HO	High Output
HSC	High Swirl Combustion, engine type
IDM	Ignition Diagnostic Module
IGN	Ignition system or circuit
INJ	Injector or Injection
ISC	Idle Speed Control
ITS	Idle Tracking Switch
KAM	Keep Alive Memory
KAPWR	Keep Alive Power
KOEO	Key On Engine Off
KOER	Key On Engine Running
KS	Knock Sensor
L	Liter(s)
LOS	Limited Operation Strategy (computer function)
LUS	Lock-Up Solenoid
MAF	Mass Air Flow sensor, meter or circuit
MA PFI	Mass Air Sequential Port Fuel Injection system
MCU	Microprocessor Control Unit
MIL	Malfunction Indicator Light
MPFI	Multi Port Fuel Injection
NDS	Neutral Drive Switch
NGS	Neutral Gear Switch
NPS	Neutral Pressure Switch
OCC	Output Circuit Check
OHC	Over Head Camshaft (engine type)
OSC	Output State Check
PFE	Pressure Feedback EGR sensor or circuit
PFI	Port Fuel Injection
PIP	Profile Ignition Pickup
PSPS	Power Steering Pressure Switch
PWR GND	Power Ground circuit
RWD	Rear Wheel Drive
SC	Super Charged (engine type)
SIG RTN	Signal Return circuit
SIL	Shift Indicator Light
SPOUT	Spark Output Signal from ECA
SS 3/4 - 4/3	Shift Solenoid circuit
STAR	Self Test Automatic Readout (test equipment)
STI	Self Test Input circuit
STO	Self Test Output circuit
TAB/TAD	Thermactor Air Bypass/Diverter Tandem soleniod valves
TFI	Thick Film Ignition system
TGS	Top Gear Switch (cancels SIL operation in top gear)
THS	Transmission Hydraulic Switch
TP/TPS	Throttle Position Sensor
TTS	Transmission Temperature Switch
VAF	Vane Air Flow sensor or circuit
VAT	Vane Air Temperature
VBATT	Vehicle Battery Voltage
VM	Vane Meter
VOM	Analog Volt/Ohm Meter
VPWR	Vehicle Power supply voltage (regulated 10-14 volts)
VREF	Voltage Reference (ECA supplied reference voltage 4-6 volts)
VSC	Vehicle Speed Control sensor or signal
VSS	Vehicle Speed Sensor or signal
WAC	WOT A/C Cut-off switch or circuit
WOT	Wide Open Throttle

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~ Frequently Used EEC-IV Abbreviations ~

Article by Skye Nott – Published 2010-10-18

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