2001 TOYOTA SEQUOIA Service Repair Manual

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Page 713 of 4323

TOYOTA SEQUOIA 2001 Service Repair Manual B17411FC (+)E4
± DIAGNOSTICSENGINE
DI±511
705 Author: Date:
2005 SEQUOIA (RM1146U)
6 Check for open in harness and connector between circuit opening relay and fuel
pump, and fuel pump and body g

Page 714 of 4323

TOYOTA SEQUOIA 2001 Service Repair Manual A21044
Engine
Room
R/BR±B
7ECM
W
E4 11
C8
C10 12
B
R±L15 2
2
Battery7
6I18
Ignition
Switch
41D
1G 6
B±R R
GAUGE
Combination
Meter Malfunction
Indicator
Lamp AM2
IG2 AM2
DI±512
± DIAGNOSTIC

Page 715 of 4323

TOYOTA SEQUOIA 2001 Service Repair Manual B17418W E5
± DIAGNOSTICSENGINE
DI±513
707 Author: Date:
2005 SEQUOIA (RM1146U)
INSPECTION PROCEDURE
HINT:
Troubleshoot each trouble symptom in accordance with the chart below.
MIL remains onSta

Page 716 of 4323

TOYOTA SEQUOIA 2001 Service Repair Manual DI±514
± DIAGNOSTICSENGINE
708 Author: Date:
2005 SEQUOIA (RM1146U)
3 Check that MIL lights up.
CHECK:
Check that MIL lights up when turning the ignition switch ON.
OK:
Standard: MIL lights up
O

Page 717 of 4323

TOYOTA SEQUOIA 2001 Service Repair Manual DIDIH±01
± DIAGNOSTICSAUTOMATIC TRANSMISSION
DI±515
709 Author: Date:
2005 SEQUOIA (RM1146U)
AUTOMATIC TRANSMISSION
PRECAUTION
NOTICE:
Perform the RESET MEMORY (AT initialization) when replacin

Page 718 of 4323

TOYOTA SEQUOIA 2001 Service Repair Manual DIDII±01
DI±516
± DIAGNOSTICSAUTOMATIC TRANSMISSION
710 Author: Date:
2005 SEQUOIA (RM1146U)
DEFINITION OF TERMS
TermDefinition
Monitor descriptionDescription of what the ECM monitors and how i

DIDII±01
DI±516
± DIAGNOSTICSAUTOMATIC TRANSMISSION
710 Author: Date:
2005 SEQUOIA (RM1146U)
DEFINITION OF TERMS
TermDefinition
Monitor descriptionDescription of what the ECM monitors and how it detects malfunctions (monitoring purpose and its details).
Related DTCsA group of diagnostic trouble codes that are output by the ECM based on the same malfunction detection logic.
Typical enabling condition
Preconditions that allow the ECM to detect malfunctions.
With all preconditions satisfied, the ECM sets the DTC when the monitored value(s) exceeds the malfunction
threshold(s).
Sequence of operation
The priority order that is applied to monitoring, if multiple sensors and components are used to detect the malfunc-
tion.
While another sensor is being monitored, the next sensor or component will not be monitored until the previous
monitoring has concluded.
Required sensor/compo-
nentsThe sensors and components that are used by the ECM to detect malfunctions.
Frequency of operation
The number of times that the ECM checks for malfunctions per driving cycle.
ºOnce per driving cycleº means that the ECM detects malfunction only one time during a single driving cycle.
ºContinuousº means that the ECM detects malfunction every time when enabling condition is met.
DurationThe minimum time that the ECM must sense a continuous deviation in the monitored value(s) before setting a
DTC. This timing begins after the ºtypical enabling conditionsº are met.
Malfunction thresholdsBeyond this value, the ECM will conclude that there is a malfunction and set a DTC.
MIL operation
MIL illumination timing after a defect is detected.
ºImmediatelyº means that the ECM illuminates MIL the instant the ECM determines that there is a malfunction.
º2 driving cycleº means that the ECM illuminates MIL if the same malfunction is detected again in the 2nd driving
cycle.
Component operating range
Normal operation range of sensors and solenoids under normal driving conditions.
Use these ranges as a reference.
They cannot be used to judge if a sensor or solenoid is defective or not.

Page 719 of 4323

TOYOTA SEQUOIA 2001 Service Repair Manual DIDIJ±01
± DIAGNOSTICSAUTOMATIC TRANSMISSION
DI±517
711 Author: Date:
2005 SEQUOIA (RM1146U)
TOYOTA PART AND SYSTEM NAME LIST
This reference list indicates the part names used in this manual al

DIDIJ±01
± DIAGNOSTICSAUTOMATIC TRANSMISSION
DI±517
711 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.
Part and system nameDefinition
Toyota HCAC system, Hydrocarbon 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 VAV, 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
Speed sensor, Vehicle speed sensor ºAº, Speed sensor for
skid control ECUVehicle speed sensor
ATF temperature sensor, Trans. fluid temp. sensor, ATF
temperature sensor ºAºTransmission fluid temperature sensor
Electronic controlled automatic transmission, ECTElectronically controlled automatic
Intermediate shaft speed sensor ºAºCounter gear speed sensor

Page 720 of 4323

TOYOTA SEQUOIA 2001 Service Repair Manual DI±518
± DIAGNOSTICSAUTOMATIC TRANSMISSION
712 Author: Date:
2005 SEQUOIA (RM1146U) Output speed sensor
Output shaft speed sensor
Input speed sensor, Input turbine speed sensor ºAº, Speed
sens

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