AB1,2,3,4 Supercharger Bypass ValveABV Supercharger Bypass Valve VSVADJ2 GroundA/C SW A/C Switch SignalA/C (1) A/C AmplifierACIS Accoustic Control Intake SystemACIS ACIS VSVACMG A/C Magnetic Clutch RelayACT Air ConditioningACV A/C Idle Up ValveAF +/- Air/Fuel Ratio SensorAFL +/- Air/Fuel Ratio SensorAFR +/- Air/Fuel Ratio SensorAMC A/C Amplifier

(+B) Battery Power from EFI RelayBATT Battery Power B/M FR-HTR (Hi) Relay

CF A/C Pressure Switch RelayCG Chassis Ground CL +/- Magnetic ClutchCODE Transponder Key Amplifier

DI Fuel Pump Control

E1... Ground (Earth)EFI +/- Traction Control ECUEFI +/- Throttle ECUEFIFEGLS EGR Valve PositionEGR EGR VSVEO1... Ground (Earth)EOM Ground (Earth)ELS Electric Load Sensor CircuitELS2 Integration RelayELS2 Heated MirrorETC Throttle ECUEVAP EVAP VSV

FC Fuel Pump RelayFPU Fuel Pressure Up VSV

G DistributorG+ Camshaft PositionG22+ Camshaft Position

HT1... Oxygen Sensor Heater ControlHTAF1... Air/Fuel Ratio Heater

IDL Throttle Position SwitchIGF IGF SignalIGSW Ignition SwitchIGT Igniter/Ignition Coil(s)IMLD Theft Deterent ECUIMLD To Security Indicator LightISCC IAC Stepper MotorISCO IAC Stepper Motor

KNK(L/R) Knock SensorKS Mass Air Flow Meter Karmen

Vortex Type

LOCK IN A/C Magnetic Clutch Lock

M+ M- Throttle Control MotorMREL Main Relay

NCO +/- O/D Direct Clutch SpeedNE+ Crankshaft PositionNE- Camshaft/Crankshaft CircuitNEO ABS & Traction ECUNSW Starter Circuit

OD Overdrive SwitchOIL A/T Fluid Temp. SensorOMR Engine Oil Feeder Control MotorOMT Engine Oil Feeder Control Mtr RelayOX* Oxygen Sensor

PIM Manifold Absolute PressurePM1 Turbo PressurePMC Waste Gate Valve VSVPRG EVAP VSVPS SW Power Steering SwitchPTNK Vapor Pressure Sensor Signal

Appendix B

Engine Control System Acronyms

Engine Control Systems I - Course 852 A-15

Acronym Description Acronym Description

* Indicates more than one number possible.

TOYOTA Technical TrainingA-16

Appendix B

R Back Up Light SwitchRSC IAC (Rotary Solenoid)RSO IAC (Rotary Solenoid)RXCK Transponder Key Amplifier

SDL Signal Data LineSG Signal GroundSDG Signal Data GroundSMC Supercharger Magnetic ClutchSPD Vehicle SpeedSTA Park/Neutral SwitchSTP Stop Light Switch

TC Data Link Connector 1THA Intake Air Temperature Sensor TE1... Data Link Connector 1THG EGR Temperature THW Engine Coolant TemperatureTHWO A/C Amplifier

TPC Vapor Pressure Sensor VSV

TRC +/- Traction Control ECU

TXCT Transponder Key Amplifier

VC Voltage Control

VG Mass air Flow Meter Hot Wire Type

VPA* Accelerator Pedal Position

VS Mass Air Flow Meter (Vane Type)

VSV1 Intake Air Control VSV

VSV2 Exhaust Gas Control Valve

VSV3 Exhaust Bypass VSV

VTO1 Throttle ECU

VTO2 Throttle ECU

VTA* Throttle Position

W Malfunction Indicator

#10 - #80 Fuel Injectors

Acronym Description Acronym Description

* Indicates more than one number possible.

Engine Control Systems I - Course 852 A-17

Engine Control System Acronyms

A/C Switch Signal A/C SWA/C Amplifier A/C (1)A/C Amplifier AMCA/C Amplifier THWOA/C Idle Up Valve ACVA/C Magnetic Clutch Lock LOCK INA/C Magnetic Clutch Relay ACMGA/C Pressure Switch Relay CFA/T Fluid Temp. Sensor OILABS & Traction ECU NEOAccelerator Pedal Position VPA*Acoustic Control Intake System ACISACIS VSV ACISAir Conditioning ACTAir/Fuel Ratio Heater HTAF1...Air/Fuel Ratio Sensor AF +/-Air/Fuel Ratio Sensor AFL +/-Air/Fuel Ratio Sensor AFR +/-

Back Up Light Switch RBattery Power BATTBattery Power from EFI Relay (+B)

Camshaft Position G+Camshaft Position G22+Camshaft/Crankshaft Circuit NE-Crankshaft Position NE+

Data Link Connector CGData Link Connector 1 TCData Link Connector 1 TE1...Distributor G

EGR Temperature THGEGR Valve Position EGLSEGR VSV EGRElectric Load Sensor Circuit ELSEngine Coolant Temperature THWEngine Oil Feeder Control Motor OMREngine Oil Feeder Control Mtr Relay OMTEVAP VSV EVAPEVAP VSV PRG Exhaust Bypass VSV VSV3

Exhaust Gas Control Valve VSV2

FR-HTR (Hi) Relay B/MFuel Injectors #10 - #80Fuel Pressure Up VSV FPUFuel Pump Control DIFuel Pump Relay FC

Ground ADJ2Ground (Earth) E1...Ground (Earth) EO1...Ground (Earth) EOM

Heated Mirror ELS2

IAC Stepper Motor ISCCIAC Stepper Motor ISCO IAC (Rotary Solenoid) RSCIAC (Rotary Solenoid) RSOIGF Signal IGFIgniter/Ignition Coil(s) IGTIgnition Switch IGSWIntake Air Control VSV VSV1Intake Air Temperature Sensor THAIntegration Relay ELS2

Knock Sensor KNK(L/R)

Magnetic Clutch CL +/-Main Relay MRELMalfunction Indicator WManifold Absolute Pressure PIMMass Air Flow Meter Hot Wire Type VGMass Air Flow Meter Karmen Vortex Type KSMass Air Flow Meter (Vane Type) VS

O/D Direct Clutch Speed NCO +/-Overdrive Switch ODOxygen Sensor OX*Oxygen Sensor Heater Control HT1...

Park/Neutral Switch STAPower Steering Switch PS SW

Description Acronym Description Acronym

* Indicates more than one number possible.

TOYOTA Technical TrainingA-18

Appendix B

Security Indicator Light IMLDSignal Data Ground SDGSignal Data Line SDLStarter Circuit NSWStop Light Switch STPSupercharger Bypass Valve AB1,2,3,4Supercharger Bypass Valve VSV ABVSupercharger Magnetic Clutch SMC

Theft Deterrent ECU IMLDThrottle Control Motor M+ M-Throttle ECU EFI +/-Throttle ECU ETCThrottle ECU VTO1Throttle ECU VTO2

Throttle Position VTA*Throttle Position Switch IDLTraction Control ECU EFI +/-Traction Control ECU TRC +/-Transponder Key Amplifier CODETransponder Key Amplifier RXCKTransponder Key Amplifier TXCTTurbo Pressure PM1

Vapor Pressure Sensor Signal PTNKVapor Pressure Sensor VSV TPCVehicle Speed SPDVoltage Control VC

Waste Gate Valve VSV PMC

Description Acronym Description Acronym

* Indicates more than one number possible.