2001 TOYOTA SEQUOIA fuel pump

IN±32± INTRODUCTIONHOW TO TROUBLESHOOT ECU CONTROLLED
SYSTEMS
32 Author: Date:
2005 SEQUOIA (RM1146U)
5. PROBLEM SYMPTOMS TABLE
The suspected circuits or parts for each problem symptom are shown in the table below. Use this table to
troubleshoot the problem when a ºNormalº code is displayed in the diagnostic trouble code check but the
problem is still occurring. Numbers in the table indicate the inspection order in which the circuits or parts
should be checked.
HINT:
When the problem is not detected by the diagnostic system even though the problem symptom is present,
it is considered that the problem is occurring outside the detection range of the diagnostic system, or that
the problem is occurring in a system other than the diagnostic system.
Symptom
Suspect AreaSee page
Engine does not crank (Does not start)
No initial combustion (Does not start)
No complete combustion (Does not start)1. Starter and starter relay
1. ECM power source circuit
2. Fuel pump control circuit
3. Engine control module (ECM)
1. Starter signal circuit
2. Fuel pump control circuit1. Fuel pump control circuitDI±147
DI±151
IN±29
PROBLEM SYMPTOMS TABLE
1. Compression
2. Fuel pump control circuit 1. A/C signal circuit
2. Fuel pump control circuit 1. A/C signal circuit (Compressor circuit)
2. ECM power source circuit 1. Starter signal circuit
2. Fuel pump control circuit1. Starter signal circuit
2. Fuel pump control circuit
3. Compression
idling) High engine idle speed (Poor idling) Hot engine Cold engine (Difficult to start)Engine cranks normally (Difficult to start)
AC±88 DI±144
DI±151
EM±3 DI±151
 Problem Symptom Page
Indicates the page where the flow chart for each circuit
is located.
 Circuit Inspection, Inspection Order
Indicates the circuit which needs to be checked for each problem
symptom. Check in the order indicated by the numbers.
 Circuit or Part Name
Indicates the circuit or part which needs to be checked.
ST±2
ST±17
DI±144
DI±151
DI±144
DI±151

± INTRODUCTIONTERMS
IN±41
41 Author: Date:
2005 SEQUOIA (RM1146U) DC
Direct Current
DEFDefogger
DFLDeflector
DIFF.Differential
DIFF. LOCKDifferential Lock
D/INJDirect Injection
DLCData Link Connector
DLIDistributorless Ignition
DOHCDouble Overhead Camshaft
DPDash Pot
DSDead Soak
DSPDigital Signal Processor
DTCDiagnostic Trouble Code
DVDDigital Versatible Disc
EBDElectric Brake Force Distribution
ECElectrochoromic
ECAMEngine Control And Measurement System
ECDElectronically Controlled Diesel
ECDYEddy Current Dynamometer
ECTElectronic Control Transmission
ECUElectronic Control Unit
EDElectro±Deposited Coating
EDUElectronic Driving Unit
EDICElectric Diesel Injection Control
EFIElectronic Fuel Injection
E/GEngine
EGRExhaust Gas Recirculation
EGR±VMEGR±Vacuum Modulator
ELREmergency Locking Retractor
EMPSElectric Motor Power Steering
ENGEngine
ESAElectronic Spark Advance
ETCS±iElectronic Throttle Control System±intelligent
EVAPEvaporative Emission Control
EVPEvaporator
E±VRVElectric Vacuum Regulating Valve
EXExhaust
FEFuel Economy
FFFront±Engine Front±Wheel±Drive
F/GFuel Gauge
FIPGFormed In Place Gasket
FLFusible Link
F/PFuel Pump
FPUFuel Pressure Up
FRFront
F/WFlywheel
FW/DFlywheel Damper
FWDFront±Wheel±Drive
GASGasoline
GNDGround
GPSGlobal Positioning System
HACHigh Altitude Compensator

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)

PP42X±01
± PREPARATIONSFI
PP±11
69 Author: Date:
2005 SEQUOIA (RM1146U)
SFI
SST (Special Service Tools)
09268±21010Fuel Hose Puller
09268±41047Injection Measuring Tool Set
(09268±41091)NO.7 Union
(09268±41110)Adaptor
(09268±41300)Clamp
(09268±52011)Injection Measuring Attachment
09268±45014EFI Fuel Pressure Gauge
(09268±41190)Adapter
(90405±06167)I Union
09612±24014Steering Gear Housing Overhaul
Tool Set
(09617±24011)Steering Rack WrenchFuel pressure pulsation damper
09808±14020Retainer Tool, Fuel Pump

SS0CB±23
SS±12
± SERVICE SPECIFICATIONSSFI
154 Author: Date:
2005 SEQUOIA (RM1146U)
SFI
SERVICE DATA
Fuel pumpResistance at 20°C (68°F)0.2 to 3.0 W
Fuel pressure
regulatorFuel pressure at no vacuum265 to 304 kPa
(2.7 to 3.1 kgf/cm2, 38 to 44 psi)
InjectorResistance at 20°C (68°F)
Injection volume
Difference between each cylinder
Fuel leakage13.4 to 14.2 W
56 to 69 cm3 (3.4 to 4.2 cu in.) per 15 seconds
13 cm3 (0.8 cu in.) or less
1 drop or less per 12 minutes
MAF meterResistance (THA ± E2) at ±20°C (±4°F)
at 20°C (68°F)
at 60°C (140°F)12.5 to 16.9 kW
2.19 to 2.67 kW
0.50 to 0.68 kW
Throttle bodyThrottle body fully closed angle5.5°
Throttle control
motorMotor resistance at 20°C (68°F)0.3 to 100 W
VSV for EVAPResistance at 20°C (68°F)30 to 34 W
VSV for ACISResistance at 20°C (68°F)33 to 39 W
VT sensorResistance Cold
Hot835 to 1,400 W
1,060 to 1,645 W
Knock sensorResistance at 20°C (68°F)120 to 280 W
ECT sensorResistance at ±20°C (±4°F)
0°C (32°F)
20°C (68°F)
40°C (104°F)
60°C (140°F)
80°C (176°F)10 to 20 kW
4 to 7 kW
2 to 3 kW
0.9 to 1.3 kW
0.4 to 0.7 kW
0.2 to 0.4 kW
Air±fuel ratio
sensorHeater coil resistance at 20°C (68°F)11 to 16 kW
Heated oxygen
sensorHeater coil resistance at 20°C (68°F)11 to 16 kW
Accelerator pedal
position sensorStandard throttle valve opening percentage
Sensor lever full±open position
60 % or more
Fuel cut rpmFuel return rpm1,400 rpm
Fuel pump resisterat 20°C (68 °F)0.70 to 0.76 kW

SS0CC±22
± SERVICE SPECIFICATIONSSFI
SS±13
155 Author: Date:
2005 SEQUOIA (RM1146U)
TORQUE SPECIFICATION
Part tightenedN´mkgf´cmft´lbf
Fuel pressure pulsation damper x Delivery pipe for use with SST33
39340
40024
29
Fuel pressure regulator x RH delivery pipe7.58066 in.´lbf
Front fuel pipe x Lower intake manifold7.58066 in.´lbf
Fuel return pipe x Delivery pipe7.58066 in.´lbf
Delivery pipe x Intake manifold2121415
Fuel tank band x Body6263245
Fuel pressure regulator x Delivery pipe7.57666 in.´lbf
Throttle body x Intake manifold1818513
ECT sensor x Front water bypass joint19.620014
Knock sensor x Cylinder head2020415
Air±fuel ratio sensor x Exhaust manifold4445032
Heated oxygen sensor x Front exhaust pipe4445032
Fuel pump resister x Body88271 in.´lbf
Camshaft oil control valve x Cylinder head7.58066 in.´lbf
Air pump assembly x Cylinder head1616312

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

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