check engine TOYOTA SEQUOIA 2001 Service Repair Manual

LU08S±07
B02609
B02613
B02614
B02615
LU±12
± LUBRICATIONOIL PUMP
2846 Author: Date:
2005 SEQUOIA (RM1146U)
INSPECTION
1. INSPECT RELIEF VALVE
Coat the valve with engine oil and check that it falls smoothly
into the valve hole by its own weight.
If it doesn't, replace the relief valve. If necessary, replace the oil
pump assembly.
2. INSPECT DRIVE AND DRIVEN ROTORS
(a) Place the drive and driven rotors into the oil pump body.
(see page LU±14)
(b) Inspect the rotors for the body clearance.
Using a feeler gauge, measure the clearance between
the drive and driven rotor tips.
Standard tip clearance:
0.060 to 0.180 mm (0.0024 to 0.0071 in.)
Maximum tip clearance: 0.18 mm (0.0071 in.)
If the tip clearance is greater than maximum, replace the rotors
as a set.
(c) Inspect the rotors for the side clearance.
Using a feeler gauge and precision straight edge, mea-
sure the clearance between the rotors and precision
straight edge.
Side clearance:
0.030 to 0.090 mm (0.0012 to 0.0035 in.)
Maximum body clearance: 0.09 mm (0.0035 in.)
If the side clearance is greater than maximum, replace the ro-
tors as a set. If necessary, replace the oil pump assembly.
(d) Inspect the rotor for the body clearance.
Using a feeler gauge, measure the clearance between
the driven rotor and body.
Standard body clearance:
0.250 to 0.325 mm (0.0098 to 0.0128 in.)
Maximum body clearance: 0.325 mm (0.0128 in.)
If the body clearance is greater than maximum, replace the ro-
tors as a set. If necessary, replace the oil pump assembly.
(e) Remove the drive and drive rotors.

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

IG0MF±01
± IGNITIONIGNITION SYSTEM
IG±1
2862 Author: Date:
2005 SEQUOIA (RM1146U)
IGNITION SYSTEM
ON±VEHICLE INSPECTION
NOTICE:
ºColdº and ºHotº in these sentences express the tempera-
ture of the coils themselves. ºColdº is from ±10°C (14°F) to
50°C (122°F) and ºHotº is from 50°C (122°F) to 100°C
(212°F).
1. INSPECT IGNITION COIL (WITH IGNITER) AND
SPARK TEST
Check that the spark occurs.
(1) Remove the ignition coils (with igniter).
(see page IG±5)
(2) Remove the spark plugs.
(3) Install the spark plugs to each ignition coil (with ig-
niter), and connect the ignition coil (with igniter) con-
nector.
(4) Disconnect the 8 injector connectors.
(5) Ground the spark plug.
(6) Check that spark occurs while engine is being
cranked.
NOTICE:
To prevent gasoline from being injected out of injectors
during this test, crank the engine for no more than 5 to 10
seconds at a time.

IG08V±06
B17487
± IGNITIONCAMSHAFT POSITION SENSOR
IG±9
2870 Author: Date:
2005 SEQUOIA (RM1146U)
INSTALLATION
1. INSTALL CAMSHAFT POSITION SENSOR
Install the camshaft position sensor with the bolt and stud bolt
Torque: 7.5 N´m (80 kgf´cm, 66 in.´lbf)
2. INSTALL LH NO.3 TIMING BELT COVER
(See page EM±23)
3. INSTALL DRIVE BELT (See page CH±16)
4. FILL ENGINE COOLANT (See page CO±2)
5. CHECK ENGINE COOLANT FOR LEAKS
6. CHECK IGNITION TIMING (See page EM±9)

ST08X±03
± STARTINGSTARTING SYSTEM
ST±1
2875 Author: Date:
2005 SEQUOIA (RM1146U)
STARTING SYSTEM
ON±VEHICLE INSPECTION
NOTICE:
Before changing the starter, check these items again:

Connector connection

Accessory installation, e.g.: engine immobilizer system

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

TR0DE±01
F19237
F19338
0 to 5 mm
(0 to 0.1968 in.)
± TRANSFERTRANSFER UNIT
TR±5
2943 Author: Date:
2005 SEQUOIA (RM1146U)
INSTALLATION
1. INSTALL TRANSFER
Raise the transfer and install it to the transmission with the 8
transfer mounting bolts.
Torque: 24 N´m (245 kgf´cm, 18 ft´lbf)
NOTICE:
Take care not to damage the lip of the transfer rear oil seal
with the transfer input shaft.
2. CONNECT VEHICLE SPEED SENSOR AND TRANS-
FER ACTUATOR CONNECTORS
3. INSTALL ENGINE REAR MOUNTING
Install the engine rear mounting to the transfer with the 4 bolts.
Torque: 65 N´m (660 kgf´cm, 48 ft´lbf)
4. INSTALL CROSS MEMBER
(a) Install the cross member with the 4 bolts and nuts.
Torque: 72 N´m (730 kgf´cm, 53 ft´lbf)
(b) Install the 4 set bolts of the engine rear mounting.
Torque: 18 N´m (185 kgf´cm, 13 ft´lbf)
(c) Remove the transmission jacks.
(d) Install the heat insulator with the 2 bolts.
Torque: 16 N´m (164 kgf´cm, 12 ft´lbf)
5. INSTALL FRONT AND REAR PROPELLER SHAFTS
(See page PR±9)
6. INSTALL LH AND RH FRONT EXHAUST PIPES
(See page EM±128)
7. INSTALL FRONT SUSPENSION MEMBER BRACKET
Install the 2 front suspension member brackets with the 8 bolts.
Torque: 33 N´m (336 kgf´cm, 24 ft´lbf)
8. FILL WITH TRANSFER OIL
(a) Remove the filler plug and gasket.
(b) Fill with transfer oil.
Oil grade: API GL±4 or GL±5
Viscosity: SAE 75W±90
Capacity: 1.4 liters (1.5 US qts, 1.2 lmp.qts)
NOTICE:

When supplying oil, pour it slowly.

Supply oil several times at several minute intervals.
HINT:
The oil level must be within 0 to 5 mm (0 to 0.1968 in.) down from
the lowest end of the hole for the filler plug.
(c) After leaving it for 5 minutes, check the oil level again.
(d) Install the filler plug with a new gasket.
Torque: 37 N´m (377 kgf´cm, 27 ft´lbf)

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.