speed sensor TOYOTA SEQUOIA 2001 Service User Guide

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

DI±4
± DIAGNOSTICSENGINE
198 Author: Date:
2005 SEQUOIA (RM1146U) Speed sensor, Vehicle speed sensor ºAº, Speed sensor for
skid control ECU
Vehicle 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
Output speed sensorOutput shaft speed sensor
Input speed sensor, Input turbine speed sensor ºAº, Speed
sensor (NT), Turbine speed sensorInput turbine speed sensor
PNP switch, NSWPark/neutral position switch
Pressure control solenoidTransmission pressure control solenoid
Shift solenoidTransmission shift solenoid valve
Transmission control switch, Shift lock control unitShift lock control module
Engine immobiliser system, Immobiliser systemVehicle anti±theft system
Air switching valve (ASV)Secondary air injection control valve
AI systemSecondary air injection system
Air pumpSecondary air injection pump
Air switching valve No.2 (ASV No.2)Secondary air injection bypass valve Bank 1, 2
VSV for air injection controlSecondary air injection vacuum switching valve
Air injection driverSecondary air injection driver

DICEL±02
± DIAGNOSTICSENGINE
DI±27
221 Author: Date:
2005 SEQUOIA (RM1146U)
READINESS MONITOR DRIVE PATTERN
1. PURPOSE OF THE READINESS TESTS

The On±Board Diagnostic (OBD II) system is designed to monitor the performance of emission±re-
lated components and report any detected abnormalities in the form of Diagnostic Trouble Codes
(DTCs). Since the various components need to be monitored during different driving conditions, the
OBD II system is designed to run separate monitoring programs called Readiness Monitors. Many
state Inspection and Maintenance (I/M) programs require that vehicles complete their Readiness Mon-
itors prior to beginning an emission test.

The current status of the Readiness Monitors can be seen by using the hand±held tester with version
9.0 software (or newer), or a generic OBD II Scan tool.

To view the Readiness Monitor status using the hand±held tester, select ºMonitor Statusº from the En-
hanced OBD II Menu.

A status of ºcompleteº indicates that the necessary conditions have been met to run the performance
tests for the related Readiness Monitor.

The Readiness Monitor will be reset to ºincompleteº if:

ECM has lost power (battery or fuse).

DTCs have been cleared.

The conditions for running the Readiness Monitor have not been met.

In the event that any Readiness Monitor shows ºincomplete,º follow the appropriate Readiness Monitor
Drive Pattern to activate the monitor and change the readiness status to ºcomplete.º
CAUTION:
Strictly observe the posted speed limits, traffic laws, and road conditions when performing these
drive patterns.
NOTICE:
These drive patterns represent the fastest method to satisfy all necessary conditions which allow
the specific readiness monitor to complete.
In the event that the drive pattern must be interrupted (possibly due to traffic conditions or other fac-
tors) the drive pattern can be resumed, and in most cases, the readiness monitor will still set to ºcom-
pleteº.
To ensure rapid completion of readiness monitors, avoid sudden changes in vehicle load and speed
(driving up and down hills and/or sudden acceleration).
Contents:
TITLESTEP(s)
CATALYST MONITOR2
EVAP MONITOR3, 4
AIR±FUEL RATIO (A/F) AND OXYGEN SENSOR (O2S) MONITOR5
OXYGEN SENOSR HEATER MONITOR6

A23544
40 mph (64 km/h)
Idling
IG SW OFF ECT:
75C (167F) or higher
Vehicle Speed
Warming up(5)(6)
10 minutes
or more(7)
10 seconds
or more4 seconds
or moreTime At Least 3 times
(8) (9)
(10) Accelerator Pedal
DepressedAccelerator Pedal
Released (Fuel±cut)
± DIAGNOSTICSENGINE
DI±31
225 Author: Date:
2005 SEQUOIA (RM1146U)
5. AIR±FUEL RATIO (A/F) AND OXYGEN SENSOR (HO2) MONITOR (ACTIVE AIR±FUEL RATIO
CONTROL TYPE)
(a) Preconditions
The monitor will not run unless:

2 minutes or more have elapsed since the engine was started.

The Engine Coolant Temperature (ECT) is 75C (167F) or higher.

Air±fuel ratio feedback control is performed.

Fuel±cut control is performed for 8 seconds or more.
(b) Drive Pattern
(1) Connect the hand±held tester to DLC3.
(2) Turn the ignition switch to ON.
(3) Clear DTCs (see page DI±43).
(4) Start the engine, and warm it up until the ECT reaches 75C (167F) or higher.
(5) Drive the vehicle at 40 mph (64 km/h) or more for at least 10 minutes.
(6) Change the transmission to 2nd gear.
(7) Accelerate the vehicle to 30 mph (48 km/h) or more by depressing the accelerator pedal for at
least 10 seconds.
(8) Soon after performing step (8) above, release the accelerator pedal for at least 4 seconds without
depressing the brake pedal, in order to execute fuel±cut control.
(9) Stop the vehicle and allow the engine to idle for 10 seconds or more.
(10) Allow the vehicle to decelerate until the vehicle speed declines to less than 6 mph (10 km/h).
(11) Repeat steps from (8) through (10) above at least 3 times in one driving cycle.
(c) Monitor Status
(1) Check the Readiness Monitor status displayed on the tester.
(2) If the status does not switch to COMPL (complete), make sure that the preconditions have been
met, and then perform steps from (5) through (11) in Drive Pattern above.

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.

A23656
0.2 V/DIV
200 msec./DIV
Ground
A2365710 msec./DIV 5 V/DIV
Ground
± DIAGNOSTICSENGINE
DI±39
233 Author: Date:
2005 SEQUOIA (RM1146U)
WAVEFORM 10
Heated oxygen sensor
ECM Terminal NamesBetween OX1B and E2
Tester Ranges0.2 V/DIV, 200 msec./DIV
ConditionsEngine speed maintained 2,500 rpm for 2 minutes after
warming up sensor
HINT:
In the DATA LIST, item O2S B1S2 shows the ECM input values
from the heated oxygen sensor.
WAVEFORM 11
Engine speed signal
ECM Terminal NamesBetween TACH and E1
Tester Ranges5 V/DIV, 10 msec./DIV
ConditionsIdling
HINT:
The wavelength becomes shorter as vehicle speed increases.

DID81±01
DI±48
± DIAGNOSTICSENGINE
242 Author: Date:
2005 SEQUOIA (RM1146U)
DATA LIST / ACTIVE TEST
1. DATA LIST
HINT:
By reading the DATA LIST displayed on a hand±held tester, you can check values, including those of the
switches, sensors, and actuators, without removing any parts. Reading the DATA LIST as the first step of
troubleshooting is one method of shortening diagnostic time.
NOTICE:
In the table below, the values listed under Normal Conditions are for reference only. Do not depend
solely on these values when determining whether or not a part is faulty.
(a) Warm up the engine.
(b) Turn the ignition switch to OFF.
(c) Connect a hand±held tester to the DLC3.
(d) Turn the ignition switch to ON.
(e) Turn the tester ON.
(f) Select the following menu items: DIAGNOSIS / ENHANCED OBD II / DATA LIST.
(g) Check the values by referring to the table below.
Hand±Held Tester DisplayMeasurement Item:Range
(Display)Normal Condition *Diagnostic Note
INJECTOR
Injection period of the No. 1 cylin-
der:
Min.: 0 ms, Max.: 32.64 ms
2.3 to 3.8 ms: Idling'
IGN ADVANCE
Ignition timing advance for No. 1
cylinder/
Min.: ±64 deg., Max.: 63.5 deg.
BTDC 4 to 17°: Idling'
CALC LOADCalculated load by ECM:
Min.: 0 %, Max.: 100 %
11 to 21 %: Idling

12 to 22 %: Running without load
(2,500 rpm)
'
VEHICLE LOADVehicle load:
Min.: 0 %, Max.: 25700 %Actual vehicle load'
MAFAir flow rate from MAF meter:
Min.: 0 g/s, Max.: 655 g/s2.0 to 3.9 g/s: Idling
If the value approximately 0.0 g/s:

Mass air flow meter power
source circuit open

VG circuit open or short
If the value 160.0 g/s or more:

E2G circuit open
ENGINE SPDEngine speed:
Min.: 0 rpm, Max.: 16,383 rpm600
50 rpm: Idling'
VEHICLE SPDVehicle speed:
Min.: 0 km/h, Max.: 255 km/hActual vehicle speedSpeed indicated on speedometer
COOLANT TEMPEngine coolant temperature:
Min.: ±40C, Max.: 140C80 to 100°C
(176 to 212°F): After warming up

If the value ±40C (±40F): sen-
sor circuit open

If the value 140C (284F): sen-
sor circuit shorted
INTAKE AIRIntake air temperature:
Min.: ±40C, Max.: 140CEquivalent to ambient air tempera-
ture

If the value ±40C (±40F): sen-
sor circuit open

If the value 140C (284F): sen-
sor circuit shorted
SECONDARY AIRSecond air system status:
ON or OFFON: Secondary air system opera-
tion'
AIR±FUEL RATIOAir±fuel ratio:
Min.: 0, Max.: 1.9990.8 to 1.2: During idling'
EVAP VAPOR PRESEVAP vapor pressure:
Min.: ±8192 Pa, Max.: 8191 Pa0 Pa: Fuel tank cap removed'

DI±54
± DIAGNOSTICSENGINE
248 Author: Date:
2005 SEQUOIA (RM1146U)FC TAU
Fuel cut TAU: Fuel cut during very
light load:
ON or OFF
ON: Fuel cut operating
The fuel cut being performed un-
der very light load to prevent the
engine combustion from becoming
incomplete
IGNITIONIgnition counter:
Min.: 0, Max.: 8000 to 800'
CYL #1, #2, #3, #4, #5, #6, #7, #8Misfire ratio of the cylinder 1 to 4:
Min.: 0, Max.: 2550 %This item displayed in only idling
CYL ALLAll cylinders misfire rate:
Min.: 0, Max.: 2550 to 35'
MISFIRE RPMEngine RPM for first misfire range:
Min.: 0 rpm, Max.: 6,375 rpm0 rpm: Misfire 0'
MISFIRE LOADEngine load for first misfire range:
Min.: 0 g/rev, Max.: 3.98 g/rev0 g/rev: Misfire 0'
MISFIRE MARGINMisfire monitoring:
MIn.: ±100 %, Max.: 99.22 %±100 to 99.2 %Misfire detecting margin
#CODES#Codes:
Min.: 0, Max.: 255'Number of detected DTCs
CHECK MODECheck mode:
0: ON, 1: OFFON: Check mode ONSee page DI±44
SPD TEST
Check mode result for vehicle
speed sensor:
0: COMPL, 1: INCOMPL
''
AS TEST
Check mode result for secondary
air injection system:
0: COMPL, 1: INCOMPL
''
MISFIRE TEST
Check mode result for misfire
monitor:
0: COMPL, 1: INCOMPL
''
OXS1 TEST
Check mode result for HO2 sen-
sor :
0: COMPL, 1: INCOMPL
''
OXS2 TEST
Check mode result for HO2 sen-
sor :
0: COMPL, 1: INCOMPL
''
A/F SSR TEST B1
Check mode result for air±fuel ra-
tio sensor :
0: COMPL, 1: INCOMPL
''
A/F SSR TEST B2
Check mode result for air±fuel ra-
tio sensor :
0: COMPL, 1: INCOMPL
''
MILMIL status:
ON or OFFON: MIL ON'
MIL ON RUN DIST
MIL ON Run Distance:
Min.: 0 second,
Max.: 65,535 seconds
Distance after DTC detected'
MIL ON RUN TIME
Running time from MIL ON:
Min.: 0 minute,
Max.: 65,535 minutesEquivalent to running time after
MIL was ON'
ENG RUN TIME
Engine run time:
Min.: 0 second,
Max.: 65,535 seconds
Time after engine startService data
TIME DTC CLEAR
Time after DTC cleared:
Min.: 0 minute,
Max.: 65,535 minutesEquivalent to time after DTCs
were erased'

DI±66
± DIAGNOSTICSENGINE
260 Author: Date:
2005 SEQUOIA (RM1146U)P043E
(DI±445)
Evaporate Emission System
Reference Orifice Clog Up
Pump module
P043F
(DI±445)Evaporate Emission System
Reference Orifice High Flow
Pump module
P0441
(DI±257)Evaporative Emission Control
System Incorrect Purge Flow

Purge valve

Purge valve circuit (between purge valve and ECM)

Leakage from EVAP line (between purge valve and intake
manifold)

EVAP line (between purge valve and canister) clogged

ECM

P0450
(DI±264)Evaporative Emission Control
System Pressure Sensor/Switch
[Fuel Tank Pressure Sensor]

Pump module (including pressure sensor)
P0451
(DI±264)Evaporative Emission Control
System Pressure Sensor/Switch
Range/Performance

Pump module (including pressure sensor)
P0452
(DI±264)Evaporative Emission Control
System Pressure Sensor/Switch
Low Input
Pump module (including pressure sensor)

Connector/Wire harness (between pump module and ECM)

ECM

P0453
(DI±264)Evaporative Emission Control
System Pressure Sensor/Switch
High Input
Pump module (include pressure sensor)

Connector/Wire harness (between pump module and ECM)

ECM

P0455
(DI±273)Evaporative Emission Control
System Leak Detected (Gross
Leak)

Fuel tank cap (loose)

Leakage from EVAP line (between canister and fuel tank)

Leakage from EVAP line (between purge valve and canister)

Leakage from pump module

Leakage from fuel tank

Leakage from canister

P0456
(DI±273)Evaporative Emission Control
System Leak Detected (Very
Small Leak)

Same as DTC No. P0445
P0500
(DI±278)Vehicle Speed Sensor ºAº

Combination meter

Open or short in vehicle speed sensor circuit

Vehicle speed sensor

ECM

P0503
(DI±278)Vehicle Speed Sensor ºAº Inter-
mittent/Erratic/High

Combination meter

Open or short in vehicle speed sensor circuit

Vehicle speed sensor

ECM
±
P0504
(DI±283)Brake Switch ºAº/ºBº Correlation

Short in stop lamp switch signal circuit

STOP fuse

Stop lamp switch

ECM
±
P0505
(DI±288)Idle Air Control System

Air induction system

Electric throttle control system

PCV hose connection

P0560
(DI±292)System Voltage

Back±up power source circuit

EFI No. 1 fuse

ECM

P0604
(DI±296)Internal Control Module Random
Access Memory (RAM) Error
ECM
P0606
(DI±296)ECM/PCM Processor
ECM
P0607
(DI±296)Control Module Performance
ECM

± DIAGNOSTICSENGINE
DI±67
261 Author: Date:
2005 SEQUOIA (RM1146U)P0617
(DI±298)
Starter Relay Circuit High

Park/neutral position switch

Starter relay circuit

Ignition switch

ECM

P0630
(DI±302)VIN not Programmed or Mis-
match±ECM/PCM
ECM
P0657
(DI±296)Actuator Supply Voltage Circuit/
Open
ECM
P0705
(DI±576)Transmission Range Sensor Cir-
cuit Malfunction (PRNDL Input)
Electronic Controlled Automatic Transaxle (ECT)
P0710
(DI±582)Transmission Fluid Temperature
Sensor ºAº Circuit
Electronic control automatic transmission (ECT)
P0711
(DI±588)Transmission Fluid Temperature
Sensor ºAº Performance
Electronic control automatic transmission (ECT)
P0712
(DI±582)Transmission Fluid Temperature
Sensor ºAº Circuit Low Input
Electronic control automatic transmission (ECT)
P0713
(DI±582)Transmission Fluid Temperature
Sensor ºAº Circuit High Input
Electronic control automatic transmission (ECT)
P0717
(DI±591)Input/Turbine Speed Sensor ºAº
Circuit No Signal
Electronic control automatic transmission (ECT)
P0722
(DI±596)Output Speed Sensor Circuit No
Signal
Electronic control automatic transmission (ECT)
P0724
(DI±600)Brake Switch ºBº Circuit High
Electronic control automatic transmission (ECT)
P0748
(DI±603)Pressure Control Solenoid ºAº
Electrical (Shift Solenoid Valve
SL1)

Electronic control automatic transmission (ECT)
P0751
(DI±608)Shift Solenoid ºAº Performance
(Shift Solenoid Valve S1)
Electronic control automatic transmission (ECT)
P0756
(DI±614)Shift Solenoid ºBº Performance
(Shift Solenoid Valve S2)
Electronic control automatic transmission (ECT)
P0771
(DI±620)Shift Solenoid ºEº Performance
(Shift Solenoid Valve SR)
Electronic control automatic transmission (ECT)
P0776
(DI±625)Pressure Control Solenoid ºBº
Performance (Shift Solenoid
Valve SL2)

Electronic control automatic transmission (ECT)
P0778
(DI±631)Pressure Control Solenoid ºBº
Electrical (Shift Solenoid Valve
SL2)

Electronic control automatic transmission (ECT)
P0781
(DI±636)1±2 Shift (1±2 Shift Valve)
Electronic control automatic transmission (ECT)
P0973
(DI±641)Shift Solenoid ºAº Control Circuit
Low (Shift solenoid Valve S1)
Electronic control automatic transmission (ECT)
P0974
(DI±641)Shift Solenoid ºAº Control Circuit
High (Shift solenoid Valve S1)
Electronic control automatic transmission (ECT)
P0976
(DI±646)Shift Solenoid ºBº Control Circuit
Low (Shift solenoid Valve S2)
Electronic control automatic transmission (ECT)
P0977
(DI±646)Shift Solenoid ºBº Control Circuit
High (Shift solenoid Valve S2)
Electronic control automatic transmission (ECT)
P0985
(DI±651)Shift Solenoid ºEº Control Circuit
Low (Shift Solenoid Valve SR)
Electronic control automatic transmission (ECT)