Page 45 of 4323

IN01X±04
± INTRODUCTIONTERMS
IN±45
45 Author: Date:
2005 SEQUOIA (RM1146U)
GLOSSARY OF SAE AND TOYOTA TERMS
This glossary lists all SAE±J1930 terms and abbreviations used in this manual in compliance with SAE rec-
ommendations, as well as their Toyota equivalents.
SAE
ABBREVIATIONSSAE TERMSTOYOTA TERMS
( )±±ABBREVIATIONS
A/CAir ConditioningAir Conditioner
ACLAir CleanerAir Cleaner, A/CL
AIRSecondary Air InjectionAir Injection (AI)
APAccelerator Pedal±
B+Battery Positive Voltage+B, Battery Voltage
BAROBarometric PressureHAC
CACCharge Air CoolerIntercooler
CARBCarburetorCarburetor
CFIContinuous Fuel Injection±
CKPCrankshaft PositionCrank Angle
CLClosed LoopClosed Loop
CMPCamshaft PositionCam Angle
CPPClutch Pedal Position±
CTOXContinuous Trap Oxidizer±
CTPClosed Throttle PositionLL ON, Idle ON
DFIDirect Fuel InjectionDirect Injection (DI/INJ)
DIDistributor Ignition±
DLC3Data Link Connector 3OBD II Diagnostic Connector
DTCDiagnostic Trouble CodeDiagnostic Trouble Code
DTMDiagnostic Test Mode±
ECLEngine Coolant Level±
ECMEngine Control ModuleEngine ECU (Electronic Control Unit)
ECTEngine Coolant TemperatureCoolant Temperature, Water Temperature (THW)
EEPROMElectrically Erasable Programmable Read Only Memory
Electrically Erasable Programmable Read Only Memory
(EEPROM),
Erasable Programmable Read Only Memory (EPROM)
EFEEarly Fuel EvaporationCold Mixture Heater (CMH), Heat Control Valve (HCV)
EGRExhaust Gas RecirculationExhaust Gas Recirculation (EGR)
EIElectronic IgnitionDistributorless Ignition (DLI)
EMEngine ModificationEngine Modification (EM)
EPROMErasable Programmable Read Only MemoryProgrammable Read Only Memory (PROM)
EVAPEvaporative EmissionEvaporative Emission Control (EVAP)
FCFan Control±
FEEPROMFlash Electrically Erasable Programmable
Read Only Memory±
FEPROMFlash Erasable Programmable Read Only Memory±
FFFlexible Fuel±
FPFuel PumpFuel Pump
GENGeneratorAlternator
GNDGroundGround (GND)
HO2SHeated Oxygen SensorHeated Oxygen Sensor (HO2S)
Page 160 of 4323
SS0O6±07
SS±18
± SERVICE SPECIFICATIONSIGNITION
160 Author: Date:
2005 SEQUOIA (RM1146U)
IGNITION
SERVICE DATA
Firing order±1 ± 8 ± 4 ± 3 ± 6 ± 5 ± 7 ± 2
Spark plugRecommended spark plug DENSO made
NGK made
Electrode gapSK20R11
IFR6A11
1.0 to 1.1 mm (0.039 to 0.043 in.)
Crankshaft
position
sensorResistance Cold
Hot1,630 to 2,740 W
2,065 to 3,225 W
Page 161 of 4323
SS0O7±05
± SERVICE SPECIFICATIONSIGNITION
SS±19
161 Author: Date:
2005 SEQUOIA (RM1146U)
TORQUE SPECIFICATION
Part tightenedN´mkgf´cmft´lbf
Spark plug x Cylinder head17.518013
Ignition coil (with igniter) x Cylinder head cover7.57666 in.´lbf
Camshaft position sensor x LH cylinder head7.57666 in.´lbf
Crankshaft position sensor x Oil pump6.56558 in.´lbf
Page 197 of 4323

DID7O±02
± DIAGNOSTICSENGINE
DI±3
197 Author: Date:
2005 SEQUOIA (RM1146U)
TOYOTA PART AND SYSTEM NAME LIST
This reference list indicates the part names used in this manual along with their definitions.
TOYOTA/LEXUS nameDefinition
Toyota HCAC system, Hydro±carbon Adsorptive Catalyst
(HCAC) system, HC adsorptive three±way catalystHC adsorptive three±way catalytic converter
Variable Valve Timing sensor, VVT sensorCamshaft position sensor
Variable valve timing system, VVT systemCamshaft timing control system
Camshaft timing oil control valve, Oil control valve, OCV,
VVT, VSVCamshaft timing oil control valve
Variable timing and lift, VVTLCamshaft timing and lift control
Crankshaft position sensor ºAºCrankshaft position sensor
Engine speed sensorCrankshaft position sensor
THAIntake air temperature
Knock control moduleEngine knock control module
Knock sensorEngine knock sensor
Mass or volume air flow circuitMass air flow sensor circuit
Vacuum sensorManifold air pressure sensor
Internal control module, Control module, Engine control
ECU, PCMPower train control module
FC idleDeceleration fuel cut
Idle air control valveIdle speed control
VSV for CCV, Canister close valve VSV for canister controlEvaporative emissions canister vent valve
VSV for EVAP, Vacuum switching valve assembly No. 1,
EVAP VSV, Purge VSVEvaporative emissions canister purge valve
VSV for pressure switching valve, Bypass VSVEvaporative emission pressure switching valve
Vapor pressure sensor, EVAP pressure sensor, Evaporative
emission control system pressure sensorFuel tank pressure sensor
Charcoal canisterEvaporative emissions canister
ORVR systemOn±board refueling vapor recovery system
Intake manifold runner controlIntake manifold tuning system
Intake manifold runner valve, IMRV, IACV (runner valve)Intake manifold tuning valve
Intake control VSVIntake manifold tuning solenoid valve
AFSAir fuel ratio sensor
O2 sensorHeater oxygen sensor
Oxygen sensor pumping current circuitOxygen sensor output signal
Oxygen sensor reference ground circuitOxygen sensor signal ground
Accel position sensorAccelerator pedal position sensor
Throttle actuator control motor, Actuator control motor, Elec-
tronic throttle motor, Throttle control motorElectronic throttle actuator
Electronic throttle control system, Throttle actuator control
systemElectronic throttle control system
Throttle/pedal position sensor, Throttle/pedal position switch,
Throttle position sensor/switchThrottle position sensor
Turbo press sensorTurbocharger pressure sensor
Turbo VSVTurbocharger pressure control solenoid valve
P/S pressure switchPower±steering pressure switch
VSV for ACMActive control engine mount
Page 199 of 4323
DID7P±01
B17433
Heated Oxygen Sensor
(Bank 2 Sensor 2) Fuel Pump
Resister
Knock Sensor 2
A/F Sensor
(Bank 1 Sensor 1) A/F Sensor
(Bank 2 Sensor 1)EVAP VSV
Combination Meter
Ignition Coil with Igniter
ECM Knock Sensor 1
Injector Throttle Body
(Throttle Position Sensor,
Throttle Control Motor)Mass Air Flow
Meter
Camshaft
Position Sensor
Crankshaft Position
SensorHeated Oxygen Sensor
(Bank 2 Sensor 2)
Park/Neutral Position
Switch DLC3
Air Injection Driver
(AID)
Accelerator Pedal Assembly
(Accelerator Pedal Position
Sensor)
Fuel Pump
VVT Sensor (Bank 2)
VVT Sensor (Bank 1) OCV (Bank 2)
OCV (Bank 1) Air Pump
Air Switching Valve No.2
(ASV No.2) (Bank 1)
Air Switching Valve
(ASV) Air Switching Valve No.2
(ASV No.2) (Bank 2)
VSV for Air Injection
Contorl (Bank 1)
VSV for Air Injection
Contorl (Bank 2)ACIS VSVCharcoal Canister Assembly
± DIAGNOSTICSENGINE
DI±5
199 Author: Date:
2005 SEQUOIA (RM1146U)
LOCATION
Page 200 of 4323
DID7Q±01
B17429
ECM
IG SW
IGSW
STSW
STAR/NSW
STA
BATT
MREL
+BM
+B
+B2
VCPA
VPA
EPA
VCP2
VPA2
EPA2W
OC1+
OC1±
OC2+
OC2±
KNK1
EKNK
KNK2
EKN2
G2+
G2±
NE+
NE±
VV1+
VV1±
VV2+
VV2± ETCSMIL
To Battery
To Battery
To Battery
To BatteryTo Starter ST Relay
PNP SW
EFI No.1
EFI No.1 Relay
Acclererator Pedal
Position SensorCombination Meter
VVT OCV
(Bank 1)
VVT OCV
(Bank 2)
Knock Sensor
(Bank 1)
Knock Sensor
(Bank 2)
Camshaft Position
SensorTo V C
Terminal
Crankshaft
Position Sensor
VVT Sensor
(Bank 1)
VVT Sensor
(Bank 2) DI±6
± DIAGNOSTICSENGINE
200 Author: Date:
2005 SEQUOIA (RM1146U)
SYSTEM DIAGRAM
Page 231 of 4323

A23648
GND 1V/ DIV KNK1 Signal Waveform
1 msec./ Division
A23649
200 msec./DIV 5 V/DIV
GroundA
B
A23650
20 msec./DIV 2 V/DIV
(a) Ground CH1
(b) Ground CH2
(c) Ground CH3
± DIAGNOSTICSENGINE
DI±37
231 Author: Date:
2005 SEQUOIA (RM1146U)
WAVEFORM 2
Knock sensor
ECM Terminal NameBetween KNK1 and EKNK
Between KNK2 and EKN2
Tester Range1 V/DIV, 1 msec./DIV
ConditionMaintain engine RPM at 2,000 rpm after engine warmed±up
HINT:
The wavelength becomes shorter as engine rpm in-
creases.
The waveforms and amplitudes displayed differ slightly
depending on the vehicle.
WAVEFORM 3
VVT OCV
ECM Terminal NameBetween OC1+ and OC1±
Between OC2+ and OC2±
Tester Range0.2 V/DIV, 200 msec./DIV
ConditionAccelerate slowly after engine warmed±up
HINT:
In the DATA LIST, the items VVT OCV DUTY B1 and B2 show
the duty ratio of voltage flowing to the OCV (see illustration on
left).
VVT OCV DUTY B1, B2 = A/B x 100 (%)
WAVEFORM 4
(a) VVT sensor bank 1
(b) VVT sensor bank 2
(c) Crankshaft position sensor
ECM Terminal Name
(a) Between VV1+ and VV1±
(b) Between VV2+ and VV2±
(c) Between NE+ and NE±
Tester Range2 V/DIV, 20 msec./DIV
ConditionIdle after engine warmed±up
HINT:
The wavelength becomes shorter as the engine rpm increases.
Page 232 of 4323

A23651
20 msec./DIV 5 V/DIV
(a)
(b)
Ground
Ground
A23652
10 msec./DIV 1 V/DIV
Ground
A23653
1 msec./DIV 5 V/DIV
Ground
A23654
1 msec./DIV 5 V/DIV
Ground
A23655
(a)
(b)
20 msec./DIV 2 V/DIV
Ground
Ground
DI±38
± DIAGNOSTICSENGINE
232 Author: Date:
2005 SEQUOIA (RM1146U)
WAVEFORM 5
(a) Camshaft position sensor
(b) Crankshaft position sensor
ECM Terminal Name(a) Between G2+ and G2±
(b) Between NE+ and NE±
Tester Range5 V/DIV, 20 msec./DIV
ConditionIdle after engine warmed±up
HINT:
The wavelength becomes shorter as the engine rpm increases.
WAVEFORM 6
Vehicle speed signal
ECM Terminal NameBetween SP2+ and SP2±
Tester Range5 V/DIV, 10 msec./DIV
ConditionDriving by 40 km/h (25 mph)
HINT:
The wavelength becomes shorter as vehicle speed increases.
WAVEFORM 7
Throttle actuator positive terminal
ECM Terminal NameBetween M+ and ME01
Tester Range5 V/DIV, 1 msec./DIV
ConditionIdle after engine warmed±up
HINT:
The duty ratio varies depending on the throttle opening opera-
tion.
WAVEFORM 8
Throttle actuator negative terminal
ECM Terminal NameBetween M± and ME01
Tester Range5 V/DIV, 1 msec./DIV
ConditionIdle after engine warmed±up
HINT:
The duty ratio varies depending on the throttle opening opera-
tion.
WAVEFORM 9
(a) Igniter IGT signal (from ECM to igniter)
(b) Igniter IGF signal (from igniter to ECM)
ECM Terminal Name(a) Between IGT1 (to IGT8) and E1
(b) Between IGF1 (IGF2) and E1
Tester Range2 V/DIV, 20 msec./DIV
ConditionIdling
HINT:
The wavelength becomes shorter as vehicle speed increases.