2001 TOYOTA SEQUOIA DLC3 Ts

SF±8
± SFIFUEL PUMP
2742 Author: Date:
2005 SEQUOIA (RM1146U)
(h) Measure the fuel pressure.
Fuel pressure:
265 to 304 kPa (2.7 to 3.1 kgf/cm
2, 38 to 44 psi)
If pressure is high, replace the fuel pressure regulator.
If pressure is low, check the fuel hoses and connections, fuel
pump, fuel filter and fuel pressure regulator.
(i) Disconnect the hand±held tester and CAN VIM from the
DLC3.
(j) Start the engine.
(k) Measure the fuel pressure at idle.
Fuel pressure:
265 to 304 kPa (2.7 to 3.1 kgf/cm
2, 38 to 44 psi)
(l) Stop the engine.
(m) Check that the fuel pressure remains as specified for 5
minutes after the engine has stopped.
Fuel pressure: 147 kPa (1.5 kgf/cm
2, 21 psi) or more
If pressure is not as specified, check the fuel pump, pressure
regulator and/or injectors.
(n) After checking fuel pressure, disconnect the negative (±)
terminal cable from the battery and carefully remove the
SST to prevent gasoline from splashing.
SST 09268±45014
(o) Reinstall the front fuel pipe to the LH delivery pipe. (See
page SF±31)
3. CONNECT CABLE TO NEGATIVE BATTERY TERMI-
NAL
4. PERFORM INITIALIZATION (See page IN±20)
Some systems need initialization when disconnecting the cable
from the negative battery terminal.
5. CHECK FOR FUEL LEAKS (See page SF±1)

SF134±04
B07326
SST
InjectorSST
SST
SST
Pressure Regulator
B04988
Pressure Regulator
SST (Hose)
SST (Union)
Fuel Return Hose
B00884
SST
(Adaptor)
SST
(Hose)
SST
(Clamp)
Vinyl
HoseO±Ring
D13872
Hand±Held Tester
DLC3
CAN VIM
± SFIINJECTOR
SF±29
2763 Author: Date:
2005 SEQUOIA (RM1146U)
INSPECTION
1. INSPECT INJECTOR INJECTION
CAUTION:
Keep the injector clean of sparks during the test.
(a) Disconnect the fuel inlet hose (fuel tube connector) from
the fuel filter.
(b) Connect SST (attachment and hose) to the fuel tube.
SST 09268±41047 (09268±52011)
(c) Remove the pressure regulator from the delivery pipe.
(d) Install the O±ring to the fuel inlet of the pressure regulator.
(e) Connect SST (hose) to the fuel inlet of the pressure regu-
lator with SST (union) and the 2 bolts.
SST 09268±41047 (09268±41091)
Torque: 7.5 N´m (76 kgf´cm, 66 in.´lbf)
(f) Connect the fuel return hose to the fuel outlet of the pres-
sure regulator.
(g) Install the O±ring to the injector.
(h) Connect SST (adaptor and hose) to the injector, and hold
the injector and union with SST (clamp).
SST 09268±41047 (09268±41110, 09268±41300)
(i) Put the injector into the graduated cylinder.
CAUTION:
Install a suitable vinyl hose onto the injector to prevent
gasoline from splashing out.
(j) Connect a hand±held tester to the Controller Area Net-
work Vehicle Interface Module (CAN VIM). Then connect
the CAN VIM to the Date Link Connector 3 (DLC3).
(k) Connect the battery negative (±) cable to the battery.
(l) Turn the ignition switch ON, and push the hand±held tes-
ter main switch ON.
NOTICE:
Do not start the engine.
(m) Enter the following menus: DIAGNOSIS / ENHANCED
OBDII / ACTIVE TEST / FUEL PUMP / SPD
(n) Please refer to the hand±held tester operator's manual
for further details.

B00883
ConnectSST
(Wire)
A01293
SF±30
± SFIINJECTOR
2764 Author: Date:
2005 SEQUOIA (RM1146U)
(o) Connect SST (wire) to the injector and battery for 15 se-
conds, and measure the injection volume with a gra-
duated cylinder. Test each injector 2 or 3 times.
SST 09842±30070
Volume: 56 to 69 cm
3 (3.4 to 4.2 cu in.) per 15 seconds
Difference between each injector:
13 cm
3 (0.8 cu in.) or less
If the injection volume is not as specified, replace the injector.
2. INSPECT LEAKAGE
(a) Under the above conditions, disconnect the tester probes
of SST (wire) from the battery and check fuel leakage
from the injector.
SST 09842±30070
Fuel drop: 1 drop or less per 12 minutes
(b) Turn the ignition switch off.
(c) Disconnect the negative (±) terminal cable from the bat-
tery.
(d) Remove the SST and fuel tube connector.
SST 09268±41047, 09842±30070
(e) Disconnect the hand±held tester and CAN VIM from the
DLC3.
(f) Reconnect the fuel inlet pipe to the fuel tube.

B17464
3 2 1
45
±20 0 20 40 60 80 100 0.1 0.2 0.3 0.51
2 3 5 10 20 30
TEMPERATURE
C(
F)
RESISTANCE kW
(±4) (32) (68) (140)(104)(212)
(176)
Air
E2 THA VG E2G
+B
Acceptable
SF0P2±09
B17465
Air
B17466
ECM
VG
E2G
Voltmeter
SF±38
± SFIMASS AIR FLOW (MAF) METER
2772 Author: Date:
2005 SEQUOIA (RM1146U)
INSPECTION
1. INSPECT OUTPUT VOLTAGE
(a) Apply battery voltage across terminals 1 (+B) and 2
(E2G).
(b) Connect the positive (+) tester probe to terminal 3 (VG),
and the negative (±) tester probe to terminal 2 (E2G).
(c) Blow air into the MAF meter, and check if the voltage fluc-
tuates.
2. INSPECT RESISTANCE
Using an ohmmeter, measure the resistance between terminals
4 (THA) and 5 (E2).
Resistance:
12.5 to 16.9 kW at ±20
C (±4
F)
2.19 to 2.67 kW at 20
C (68
F)
0.50 to 0.68 kW at 60
C (140
F)
3. INSPECT MASS AIR FLOW METER
(a) If using a hand±held tester:
(1) Connect the hand±held tester to the DLC3.
(2) Turn the ignition switch to the ON position.
(3) Blow air into the MAF meter, and check that the air
flow value of the CURRENT DATA changes.
If operation is not as specified, check the MAF meter (see page
DI±110 and DI±113) as well as the wiring and the ECM.
(b) If not using a hand±held tester:
(1) Turn the ignition switch to the ON position.
(2) Connect the positive tester probe of the voltmeter
to terminal VG of the ECM and the negative tester
probe of the voltmeter to terminal E2G of the ECM.
(3) Blow air into the air flow meter, and check if the volt-
age fluctuates.
If operation is not as specified, check the MAF meter (see page
DI±110 and DI±113), the wiring and the ECM.

B17467
SF1XJ±01
D13872
Hand±Held Tester
DLC3
CAN VIM
± SFITHROTTLE BODY
SF±39
2773 Author: Date:
2005 SEQUOIA (RM1146U)
THROTTLE BODY
ON±VEHICLE INSPECTION
1. REMOVE THROTTLE BODY COVER
2. INSPECT SYSTEM OPERATION
(a) Inspect the throttle control motor for operating sound.
(1) Turn the ignition switch ON.
(2) When depressing the accelerator pedal, check the
running sound of the motor. Also, check that there
is no friction sound.
If operation is not as specified, check the throttle control motor
(see step 3), wiring and ECM.
(b) Inspect the accelerator pedal position sensor.
(1) Connect a hand±held tester to the Controller Area
Network Vehicle Interface Module (CAN VIM). Then
connect the CAN VIM to the Date Link Connector 3
(DLC3).
(2) Check that the MIL does not light up.
(3) When turning the accelerator pedal position sensor
lever to the full±open position, check that the
throttle valve opening percentage (THROTTLE
POS) of the CURRENT DATA showns the standard
value.
Standard throttle valve opening percentage:
60% or more
If operation is not as specified, check that the accelerator pedal
position sensor (see page DI±370), wiring and ECM.
If not using a hand±held tester, measure the voltage between
terminals (VTA1±E2, VTA2±E2) of the ECM connector (See
page DI±127).
(c) Inspect the idle speed.
(1) Start the engine and check that the MIL does not
light up.
(2) Allow the engine to warm up to normal operating
temperature.
(3) Turn the A/C compressor ON to OFF, and check the
idle speed.
Idle speed (Transmission in neutral): 700 ± 50 rpm
NOTICE:
Perform inspection without an electrical load.
(d) After checking the above (a) to (c), perform the driving test
and check that there is no sense of incongruity.

D13872
Hand±Held Tester
DLC3
CAN VIM
Rich Lean
Time14.6
3.3
Keep Engine Speed
(V)
B17513
Air±fuel
Ratio
± SFIAIR±FUEL RATIO (A/F) SENSOR
SF±71
2805 Author: Date:
2005 SEQUOIA (RM1146U)
(b) Connect a hand±held tester to the Controller Area Net-
work Vehicle Interface Module (CAN VIM). Then connect
the CAN VIM to the Date Link Connector 3 (DLC3).
(c) Turn the ignition switch ON.
(d) Select the following menu items : Data List / A/FS B1 S1
and O2S B1 S2.
(e) Warm up the A/F sensor by running the engine at 2,500
rpm for approximately 2 minutes.
(f) Keep the engine speed at 2,500 rpm and confirm that the
display of the ºA/FS B1 S1º is as shown in the illustration.
HINT:

The illustration may slightly differ from the display on the
hand±held tester.

The waveform of the A/F sensor is displayed only on the
hannd±heldtester .
(g) Confirm that the display of the ºO2S B1 S2º changes be-
tween 0 and 1 V with the engine speed at 2,500 rpm.
OK:
The voltage output oscillates more than 8 times in 10
seconds.
CAUTION:

Perform the check immediately after warming up the
engine.

If the voltage variation could not be verified, warm up
the heated oxygen sensor again. If it could not be veri-
fied even after warming up the sensor again, check
the DTC No. (See page DI±88)

SF0Q2±16
D13872
Hand±Held Tester
DLC3
CAN VIM
B04432
Sound Scope
SF±82
± SFIFUEL CUT RPM
2816 Author: Date:
2005 SEQUOIA (RM1146U)
FUEL CUT RPM
INSPECTION
1. WARM UP ENGINE
Allow the engine to warm up to normal operating temperature.
2. CONNECT HAND±HELD TESTER
(a) Connect a hand±held tester to the Controller Area Net-
work Vehicle Interface Module (CAN VIM). Then connect
the CAN VIM to the Date Link Connector 3 (DLC3).
(b) Please refer to the hand±held tester operator's manual
for further details.
3. INSPECT FUEL CUTOFF RPM OPERATION
(a) Increase the engine speed to at least 2,500 rpm.
(b) Check for injector operating noise.
(c) Check that when the throttle lever is released, injector op-
eration noise stops momentarily and then resumes.
HINT:

The vehicle should be stopped.

Measure with the A/C OFF.
Fuel return speed: 1,400 rpm
(d) Disconnect the hand±held tester and CAN VIM from the
DLC3.

TOYOTA
Hand±held
Tester
D05981DLC3
BR1NG±05
BR±48
± BRAKEABS & VSC ACTUATOR
3215 Author: Date:
2005 SEQUOIA (RM1146U)
ABS & VSC ACTUATOR
ON±VEHICLE INSPECTION
1. CONNECT TOYOTA HAND±HELD TESTER:
(a) Connect the TOYOTA hand±held tester to the DLC3.
(b) Start the engine and run it at idle.
(c) Select the ACTIVE TEST mode on the TOYOTA hand±
held tester.
HINT:
Please refer to the TOYOTA hand±held tester operator's manu-
al for further details.
2. INSPECT ACTUATOR MOTOR OPERATION
(a) With the motor relay ON, check the actuator motor opera-
tion noise.
(b) Turn the motor relay OFF.
(c) Depress the brake pedal and hold it for about 15 seconds.
Check that the pedal does not go down any further while
holding.
(d) With the motor relay ON, check that the pedal does not
pulsate.
NOTICE:
Do not keep motor relay ON for more than 5 seconds con-
tinuously. When operating it continuously, set the interval
of more than 20 seconds.
(e) Turn the motor relay OFF and release the brake pedal.
3. INSPECT RIGHT FRONT WHEEL OPERATION
NOTICE:
Never turn ON the solenoid which is not described below.
(a) With the brake pedal depressed, perform the following
operations.
(b) Turn the SFRH and SFRR solenoid ON simultaneously,
and check that the pedal cannot be depressed.
NOTICE:
Do not keep solenoid ON for more than 10 seconds contin-
uously. When operating it continuously, set the interval of
more than 20 seconds.
(c) Turn the SFRH and SFRR solenoid OFF simultaneously,
and check that the pedal can be depressed.
(d) Turn the motor relay ON and check that the pedal returns.
NOTICE:
Do not keep motor relay ON for more than 5 seconds con-
tinuously. When operating it continuously, set the interval
of more than 20 seconds.
(e) Turn the motor relay OFF and release the brake pedal.
4. INSPECT OTHER WHEEL OPERATION
As in the same procedure, check the solenoids of other wheels.
HINT:
Left front wheel: SFLH, SFLR
Right rear wheel: SRRH, SRRR
Left rear wheel: SRLH, SRLR