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# TERMS > GLOSSARY OF SAE AND TOYOTA TERMS

This glossary lists all SAE-J1930 terms and abbreviations used in this manual in compliance with SAE recommendations, as well as their TOYOTA equivalents.

SAE ABBREVIATIONS | SAE TERMS | TOYOTA TERMS ( )-ABBREVIATIONS
3GR | Third Gear | -
4GR | Fourth Gear | -
A/C | Air Conditioning | Air Conditioner
ACL | Air Cleaner | Air Cleaner, A/CL
AIR | Secondary Air Injection | Air Injection (AI)
AP | Accelerator Pedal | -
B+ | Battery Positive Voltage | +B, Battery Voltage
BARO | Barometric Pressure | HAC
CAC | Charge Air Cooler | Intercooler
CARB | Carburetor | Carburetor
CFI | Continuous Fuel Injection | -
CKP | Crankshaft Position | Crank Angle
CL | Closed Loop | Closed Loop
CMP | Camshaft Position | Cam Angle
CPP | Clutch Pedal Position | -
CTOX | Continuous Trap Oxidizer | -
CTP | Closed Throttle Position | LL ON, Idle ON
DFI | Direct Fuel Injection | Direct Injection (DI/INJ)
DI | Distributor Ignition | -
DLC3 | Data Link Connector 3 | OBD II Diagnostic Connector
DTC | Diagnostic Trouble Code | Diagnostic Trouble Code
DTM | Diagnostic Test Mode | -
ECL | Engine Coolant Level | -
ECM | Engine Control Module | Engine Electronic Control Unit (ECU)
ECT | Engine Coolant Temperature | Coolant Temperature, Water Temperature (THW)
EEPROM | Electrically Erasable Programmable Read Only Memory | Electrically Erasable Programmable Read Only Memory (EEPROM)
EFE | Early Fuel Evaporation | Cold Mixture Heater (CMH), Heat Control Valve (HCV)
EGR | Exhaust Gas Recirculation | Exhaust Gas Recirculation (EGR)
EI | Electronic Ignition | Distributorless Ignition (DLI)
EM | Engine Modification | Engine Modification (EM)
EPROM | Erasable Programmable Read Only Memory | Programmable Read Only Memory (PROM)
EVAP | Evaporative Emission | Evaporative Emission Control (EVAP)
FC | Fan Control | -
FEEPROM | Flash Electrically Erasable Programmable Read Only Memory | -
FEPROM | Flash Erasable Programmable Read Only Memory | -
FF | Flexible Fuel | -
FP | Fuel Pump | Fuel Pump
GEN | Generator | Alternator
GND | Ground | Ground (GND)
HO2S | Heated Oxygen Sensor | Heated Oxygen Sensor (HO2S)
IAC | Idle Air Control | Idle Speed Control (ISC)
IAT | Intake Air Temperature | Intake or Inlet Air temperature
ICM | Ignition Control Module | -
IFI | Indirect Fuel Injection | Indirect Injection (IDL)
IFS | Inertia Fuel-Shutoff | -
ISC | Idle Speed Control | -
KS | Knock Sensor | Knock Sensor
MAF | Mass Air Flow | Air Flow Meter
MAP | Manifold Absolute Pressure | Manifold Pressure Intake Vacuum
MC | Mixture Control | Electric Bleed Air Control Valve (EBCV) Mixture Control Valve (MCV) Electric Air Control Valve (EACV)
MDP | Manifold Differential Pressure | -
MFI | Multiport Fuel Injection | Electronic Fuel Injection (EFI)
MIL | Malfunction Indicator Lamp | Check Engine Lamp
MST | Manifold Surface Temperature | -
MVZ | Manifold Vacuum Zone | -
NVRAM | Non-Volatile Random Access Memory | -
O2S | Oxygen Sensor | Oxygen Sensor, O2 Sensor (O2S)
OBD | On-Board Diagnostic | On-Board Diagnostic System (OBD)
OC | Oxidation Catalytic Converter | Oxidation Catalyst Converter (OC), CCo
OL | Open Loop | Open Loop
PAIR | Pulsed Secondary Air Injection | Air Suction (AS)
PCM | Powertrain Control Module | -
PNP | Park/Neutral Position | -
PROM | Programmable Read Only Memory | -
PSP | Power Steering Pressure | -
PTOX | Periodic Trap Oxidizer | Diesel Particulate Filter (DPF) Diesel Particulate Trap (DPT)
RAM | Random Access Memory | Random Access Memory (RAM)
RM | Relay Module | -
ROM | Read Only Memory | Read Only Memory (ROM)
RPM | Engine Speed | Engine Speed
SC | Supercharger | Supercharger
SCB | Supercharger Bypass | E-ABV
SFI | Sequential Multiport Fuel Injection | Electronic Fuel Injection (EFI), Sequential Injection
SPL | Smoke Puff Limiter | -
SRI | Service Reminder Indicator | -
SRT | System Readiness Test | -
ST | Scan Tool | -
TB | Throttle Body | Throttle Body
TBI | Throttle Body Fuel Injection | Single Point Injection Central Fuel Injection (Ci)
TC | Turbocharger | Turbocharger
TCC | Torque Converter Clutch | Torque Converter
TCM | Transmission Control Module | Transmission ECU, ECT ECU
TP | Throttle Position | Throttle Position
TR | Transmission Range | -
TVV | Thermal Vacuum Valve | Bimetallic Vacuum Switching Valve (BVSV) Thermostatic Vacuum Switching Valve (TVSV)
TWC | Three-Way Catalytic Converter | Three-Way Catalytic (TWC) Manifold Converter CCRO
TWC+OC | Three-Way + Oxidation Catalytic Converter | CCR + CCo
VAF | Volume Air Flow | Air Flow Meter
VR | Voltage Regulator | Voltage Regulator
VSS | Vehicle Speed Sensor | Vehicle Speed Sensor
WOT | Wide Open Throttle | Full Throttle
WU-OC | Warm Up Oxidation Catalytic Converter | -
WU-TWC | Warm Up Three-Way Catalytic Converter | -