check engine light TOYOTA SEQUOIA 2001 Service Workshop Manual

FI2553
SST
B16498
New Gasket
SF±2
± SFISFI SYSTEM
2736 Author: Date:
2005 SEQUOIA (RM1146U)
(b) When installing the battery, be especially careful to cor-
rectly connect the positive (+) and negative (±) cables.
(c) Do not give a severe impact to the SFI parts during remov-
al or installation. Handle all SFI parts carefully, especially
the ECM.
(d) Be careful during troubleshooting. Numerous transistor
circuits are used and even slight terminal contact can
cause further trouble.
(e) Do not open the ECM cover.
(f) When inspecting during rainy weather, take care to pre-
vent entry of water. Also, when washing the engine
compartment, prevent water from getting into the SFI
parts and wiring connectors.
(g) Parts should be replaced as an assembly.
(h) Care should be taken when pulling out and inserting wir-
ing connectors.
(1) Release the lock and pull out the connector, pulling
on the connectors.
(2) Fully insert the connector and check that it is locked.
(i) Use SST for inspection or test of the injector or its wiring
connector.
SST 09842±30070
8. FUEL SYSTEM
(a) When disconnecting the high fuel pressure line, a large
amount of gasoline will spill out. Observe the following
procedures:
(1) Disconnect the circuit opening relay.
(2) Start the engine. After the engine has stopped on
its own, turn the ignition switch off.
(3) Put a container under the connecting part of the
pressure line.
(4) Slowly loosen the connection.
(5) Disconnect the high fuel pressure line.
(6) Reconnect the fuel pump connector.
(b) When connecting the union bolt (fuel pressure pulsation
damper) on the high pressure pipe union, observe the fol-
lowing procedures:
(1) Always use 2 new gaskets.
(2) Tighten the union bolt by hand.

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)

LU08Z±10
B07332
New O±Ring
B07837
± LUBRICATIONOIL COOLER
LU±23
2857 Author: Date:
2005 SEQUOIA (RM1146U)
INSTALLATION
1. INSTALL OIL COOLER
(a) Clean the oil cooler contact surface on the cooler mount-
ing.
(b) Place a new O±ring to the oil cooler.
(c) Apply a light coat of engine oil on the threads and under
the head of the union bolt.
(d) Install the oil cooler and plate washer with the union bolt.
Torque: 68.6 N´m (700 kgf´cm, 51 ft´lbf)
(e) Connect the 2 oil cooler hoses to the oil cooler.
2. INSTALL OIL FILTER (See page LU±2)
3. FILL WITH ENGINE COOLANT
4. START ENGINE AND CHECK FOR ENGINE OIL
LEAKS
5. CHECK ENGINE OIL LEVEL

CH0K7±03
B07241
Upper Level
Lower Level
B07242
Except Maintenance±Free Battery
± CHARGINGCHARGING SYSTEM
CH±1
2893 Author: Date:
2005 SEQUOIA (RM1146U)
CHARGING SYSTEM
ON±VEHICLE INSPECTION
CAUTION:

Check that the battery cables are connected to the
correct terminals.

Disconnect the battery cables when the battery is giv-
en a quick charge.

Do not perform tests with a high voltage insulation re-
sistance tester.

Never disconnect the battery while the engine is run-
ning.
1. CHECK BATTERY ELECTROLYTE LEVEL
Check the electrolyte quantity of each cell.
If under the lower level, replace the battery (or add distilled wa-
ter if possible) and check the charging system.
2. Except Maintenance±Free Battery:
CHECK BATTERY SPECIFIC GRAVITY
Check the specific gravity of each cell.
Standard specific gravity:
1.25 to 1.29 at 20°C (68°F)
If the specific gravity is less than the specification, charge the
battery.
3. Maintenance±Free Battery:
CHECK BATTERY VOLTAGE
(a) In the case that 20 minutes have not passe4d after stop-
ping the engine, turn on the ignition switch and the electri-
cal system (headlight, blower motor, rear defogger, etc.)
for 60 seconds before removing the surface charge.
(b) Turn the ignition switch OFF and turn off the electrical sys-
tems.

B00808
B
A
AC2024
CORRECT WRONG
Z03473
Ammeter
Disconnect Wire
from Terminal B
Battery
VoltmeterB
Generator
± CHARGINGCHARGING SYSTEM
CH±3
2895 Author: Date:
2005 SEQUOIA (RM1146U)

Check that the arrow mark on the belt tensioner falls
within area A of the scale.
If it is outside area A, replace the drive belt.
HINT:

When a new belt is installed, it should lie within area B. If
not, the drive belt is not correct.

After installing a belt, check that it fits properly in the
ribbed grooves.

Check by hand to confirm that the belt does not slipped
out of the groove on the bottom of the pulley.
6. REMOVE ENGINE UNDER COVER NO.1
7. VISUALLY CHECK GENERATOR WIRING AND LIS-
TEN FOR ABNORMAL NOISES
(a) Check that the wiring is in good condition.
(b) Check that there is no abnormal noise from the generator
while the engine is running.
8. CHECK CHARGE WARNING LIGHT CIRCUIT
(a) Warm up the engine and then turn it off.
(b) Switch off all accessories.
(c) Turn the ignition switch ON, and check that the charge
warning light comes on.
(d) Start the engine, and check that the light goes off.
If the light does not go off as specified, troubleshoot the charge
light circuit.
9. INSPECT CHARGING CIRCUIT WITHOUT LOAD
HINT:
If a battery/generator tester is available, connect the tester to
the charging circuit as per manufacturer's instructions.
(a) If a tester is not available, connect a voltmeter and amme-
ter to the charging circuit as follows:

Disconnect the wire from terminal B of the genera-
tor, and connect it to the negative (±) tester probe
of the ammeter.

Connect the positive (+) tester probe of the amme-
ter to terminal B of the generator.

Connect the positive (+) tester probe of the voltme-
ter to terminal B of the generator.

Ground the negative (±) tester probe of the voltme-
ter.
(b) Check the charging circuit as follows:
With the engine running from idling to 2,000 rpm, check
the reading on the ammeter and voltmeter.
Standard amperage: 10 A or less
Standard voltage: 13.2 to 14.0 V

CH±4
± CHARGINGCHARGING SYSTEM
2896 Author: Date:
2005 SEQUOIA (RM1146U)
If the voltmeter reading is more than the standard voltage, re-
place the voltage regulator.
If the voltmeter reading is less than the standard voltage, check
the voltage regulator and generator.
10. INSPECT CHARGING CIRCUIT WITH LOAD
(a) With the engine running at 2,000 rpm, turn on the high
beam headlights and set the heater blower switch to HI.
(b) Check the reading on the ammeter.
Standard amperage: 30 A or more
If the ammeter reading is less than the standard amperage, re-
pair the generator.
HINT:
If the battery is fully charged, the indication will sometimes be
less than standard amperage.
11. REINSTALL ENGINE UNDER COVER

TR09T±04
F19317
2WD/4HI Switch
F19318
Differential Lock Switch
± TRANSFERONE TOUCH 2±4 SELECTOR SYSTEM
TR±39
2977 Author: Date:
2005 SEQUOIA (RM1146U)
INSPECTION
NOTICE:

4HI e 4LO: Stop the vehicle and apply the brake, then
first shift the transmission shift lever into the ºNº
position.

Do not operate the four wheel drive control switch
and the differential lock switch at the same time.

Do not change from 2WD to 4WD when vehicle speed
is 62 mph (100 km/h) or more.
1. INSPECT 2WD e 4HI (4WD and differential lock
ºFREEº) SHIFT
(a) Start the engine.
(b) Push the 2WD/4HI switch once.
(c) Check that the 4WD indicator light stays lit after blinking.
(The center differential lock indicator light blinks while be-
ing shifted.)
(d) Push the 2WD/4HI switch once again.
(e) Check that the 4WD indicator light goes off after blinking.
(The center differential lock indicator light blinks while be-
ing shifted.)
2. INSPECT 4HI (4WD and differential lock ºFREEº) e
4HI (4WD and differential lock ºLOCKº) SHIFT
(a) Start the engine.
(b) Push the 2WD/4HI switch once.
(c) Check that the 4WD indicator light stays lit after blinking.
(d) Push the differential lock switch once.
(e) Check that the center differential lock indicator light stays
lit after blinking.
(f) Push the differential lock switch once again.
(g) Check that the center differential lock indicator light goes
off after blinking.
3. INSPECT 4HI (4WD and differential lock ºLOCKº) e
2WD
(a) Start the engine.
(b) Push the 2WD/4HI once.
(c) Check that the 4WD indicator light stays lit after blinking.
(d) Push the differential lock switch once.
(e) Check that the center differential lock indicator light stays
lit after blinking.

F19319
2WD/4HI Switch
F19320
4LO Switch
F19321
Differential Lock Switch
TR±40
± TRANSFERONE TOUCH 2±4 SELECTOR SYSTEM
2978 Author: Date:
2005 SEQUOIA (RM1146U)
(f) Push the 2WD/4HI switch once again.
(g) Check that the 4WD and center differential lock indicator
lights go off after blinking.
4. INSPECT 2WD e 4LO (4WD and differential lock
ºFREEº)
(a) Start the engine.
(b) Push the 4LO switch once.
(c) Check that the 4LO indicator light stays lit after blinking.
(The 4WD and center differential lock indicator lights blink
while shifting.)
(d) Push the 2WD/4HI switch once.
Check that the 4LO indicator light goes off after blinking.
(The 4WD and center differential lock indicator lights blink
while shifting.)
5. INSPECT 4LO (4WD and differential lock ºFREEº) e
4LO (4WD and differential lock ºLOCKº)
(a) Start the engine.
(b) Push the 4LO switch once.
(c) Check that the 4LO indicator light stays lit after blinking.
(d) Push the differential lock switch once.
(e) Check that the center differential lock indicator light stays
lit after blinking.
(f) Push the differential lock switch once again.
(g) Check that the center differential lock indicator light goes
off after blinking.

F19322
4LO Switch
F19323
4LO Switch
± TRANSFERONE TOUCH 2±4 SELECTOR SYSTEM
TR±41
2979 Author: Date:
2005 SEQUOIA (RM1146U)
6. INSPECT 4HI (4WD and differential lock ºFREEº) e
4LO (4WD and differential lock ºFREEº)
(a) Start the engine.
(b) Push the 2WD/4HI switch once.
(c) Check that the 4WD indicator light stays lit after blinking.
(d) Push the 4LO switch once.
(e) Check that the 4WD indicator light goes off and the 4LO
indicator light stays lit after blinking.
(f) Push the 4LO switch once again.
(g) Check that the 4LO indicator light goes off after blinking
and the 4WD indicator light comes on.
7. INSPECT 4HI (4WD and differential lock ºLOCKº) e
4LO (4WD and differential lock ºLOCKº)
(a) Start the engine.
(b) Push the 2WD/4HI switch once.
(c) Check that the 4WD indicator light stays lit after blinking.
(d) Push the differential lock switch once.
(e) Check that the center differential lock indicator light stays
lit after blinking.
(f) Push the 4LO switch once.
(g) Check that the 4WD indicator light goes off and the 4LO
indicator light stays lit after blinking.
(h) Push the 4LO switch once again.
(i) Check that the 4LO indicator light goes off after blinking
and the 4WD indicator light comes on.