timing belt TOYOTA SEQUOIA 2001 Service Repair Manual

MA004±18
P08488
Back Front
± MAINTENANCEENGINE
MA±5
52 Author: Date:
2005 SEQUOIA (RM1146U)
ENGINE
INSPECTION
HINT:
Perform the following procedures when the engine is cold.
1. REPLACE TIMING BELT
(See page EM±13)
2. INSPECT DRIVE BELT
(See page CH±1)
3. REPLACE SPARK PLUGS
(See page IG±1)
4. INSPECT AIR FILTER
(a) Visually check that the air cleaner element is not exces-
sively dirty, damaged or oily.
HINT:
Oiliness may indicate a stuck PCV valve.
If necessary, replace the air cleaner element.
(b) Clean the element with compressed air.
First blow from back side thoroughly, then blow off the
front side of the element.
5. REPLACE AIR FILTER
Replace the used air cleaner element with a new one.
6. REPLACE ENGINE OIL AND OIL FILTER
(See page LU±2)
7. REPLACE ENGINE COOLANT
(See page CO±2)
8. INSPECT CHARCOAL CANISTER
(See page EC±9)
9. REPLACE GASKET IN FUEL TANK CAP
(See page SF±33)
10. INSPECT FUEL LINES, CONNECTIONS, FUEL TANK
VAPOR VENT SYSTEM HOSES AND FUEL TANK
BAND
Visually inspect the fuel lines for cracks, leakage loose connec-
tions, deformation or tank band looseness.
11. INSPECT EXHAUST PIPES AND MOUNTINGS
Visually inspect the pipes, hangers and connections for severe
corrosion, leaks or damage.
12. INSPECT VALVE CLEARANCE
(See page EM±4)

SS0OQ±12
SS±4
± SERVICE SPECIFICATIONSENGINE MECHANICAL
146 Author: Date:
2005 SEQUOIA (RM1146U)
ENGINE MECHANICAL
SERVICE DATA
Compression
pressureat 250 rpm STD
Minimum
Difference of pressure between each cylinder1,373 kPa (14.0 kgf/cm2, 199 psi) or more
1,030 kPa (10.5 kgf/cm2, 149 psi)
98 kPa (1.0 kgf/cm2, 14 psi) or less
Valve
clearanceat cold Intake
Exhaust
Valve clearance adjusting shim No.00
No.02
No.04
No.06
No.08
No.10
No.12
No.14
No.16
No.18
No.20
No.22
No.24
No.26
No.28
No.30
No.32
No.34
No.36
No.38
No.40
No.42
No.44
No.46
No.48
No.50
No.52
No.54
No.56
No.58
No.60
No.62
No.64
No.66
No.68
No.70
No.72
No.74
No.76
No.78
No.800.15 to 0.25 mm (0.006 to 0.010 in.)
0.25 to 0.35 mm (0.010 to 0.014 in.)
2.000 mm (0.0787 in.)
2.020 mm (0.0795 in.)
2.040 mm (0.0803 in.)
2.060 mm (0.0811 in.)
2.080 mm (0.0819 in.)
2.100 mm (0.0827 in.)
2.120 mm (0.0835 in.)
2.140 mm (0.0843 in.)
2.160 mm (0.0850 in.)
2.180 mm (0.0858 in.)
2.200 mm (0.0866 in.)
2.220 mm (0.0874 in.)
2.240 mm (0.0882 in.)
2.260 mm (0.0890 in.)
2.280 mm (0.0898 in.)
2.300 mm (0.0906 in.)
2.320 mm (0.0913 in.)
2.340 mm (0.0921 in.)
2.360 mm (0.0929 in.)
2.380 mm (0.0937 in.)
2.400 mm (0.0945 in.)
2.420 mm (0.0953 in.)
2.440 mm (0.0961 in.)
2.460 mm (0.0969 in.)
2.480 mm (0.0976 in.)
2.500 mm (0.0984 in.)
2.520 mm (0.0992 in.)
2.540 mm (0.1000 in.)
2.560 mm (0.1008 in.)
2.580 mm (0.1016 in.)
2.600 mm (0.1024 in.)
2.620 mm (0.1031 in.)
2.640 mm (0.1039 in.)
2.660 mm (0.1047 in.)
2.680 mm (0.1055 in.)
2.700 mm (0.1063 in.)
2.720 mm (0.1071 in.)
2.740 mm (0.1079 in.)
2.760 mm (0.1087 in.)
2.780 mm (0.1094 in.)
2.800 mm (0.1102 in.)
Ignition timingw/ Terminals TC and E1 connected of DLC15 to15° BTDC @ idle
Idle speed±700 ± 50 rpm
Timing belt
tensionerProtrusion from housing end10.5 to 11.5 mm (0.413 to 0.453 in.)

SS0OR±13
SS±8
± SERVICE SPECIFICATIONSENGINE MECHANICAL
150 Author: Date:
2005 SEQUOIA (RM1146U)
TORQUE SPECIFICATION
Part tightenedN´mkgf´cmft´lbf
Fan shroud x Radiator assembly5.55043 in.´lbf
Radiator bracket x Radiator assembly2020015
A/C Compressor x Cylinder block4950036
Generator x Generator bracket3940029
No.1 idler pulley, No.2 idler pulley x Cylinder Block34.535025
Camshaft timing pulley x Camshaft timing tube8.18372 in.´lbf
Drive belt tensioner x Cylinder block1616012
Timing belt tensioner x Oil pump2627019
Crankshaft pulley x Crankshaft2452,500181
Fan bracket x Cylinder block 12 mm head
14 mm head16
32160
33012
24
No.2 timing belt cover x Cylinder block1616012
No.3 timing belt cover x Cylinder block, cylinder head7.58066 in.´lbf
Drive belt idler pulley x Fan bracket3940029
Fluid coupling x Fan bracket2929621
Exhaust manifold x Cylinder head4445033
Cylinder head x Cylinder block 1st
2nd
3rd40
Turn 90°
Turn 90°408
Turn 90°
Turn 90°30
Turn 90°
Turn 90°
Camshaft bearing cap x Cylinder head Bolt A
Others7.5
1680
16066 in.´lbf
12
Cylinder head cover x Cylinder head6.06053 in.´lbf
Engine hanger x Cylinder head3738027
Front water bypass joint, Rear water bypass joint x Cylinder head1818513
Intake manifold x Cylinder head1818513
Timing belt rear plate x Cylinder head7.58066 in.´lbf
Drive plate x Crankshaft 1st
2nd49
Turn 90°500
Turn 90°36
Turn 90°
Transmission x Cylinder block7273053
Transmission x No.1 oil pan3738027
Drive plate x Torque converter clutch4849035
Flywheel housing under cover x Transmission1818513
Engine rear mounting bracket x Transmission6566348
Frame crossmember x Rear engine mounting insulator Bolt A
Bolt B18
72183
73013
53
Frame bracket x Engine mounting bracket3838828
PS pump x Cylinder head6263246
Main bearing cap x Cylinder block 1st
2nd27
Turn 90°275
Turn 90°20
Turn 90°
Connecting rod cap x Connecting rod 1st
2nd24.5
Turn 90°250
Turn 90°18
Turn 90°
Rear oil seal retainer x Cylinder block8.08071 in.´lbf
Engine coolant drain union x Cylinder block4950036
Engine mounting bracket x Cylinder block3637027
Water bypass pipe x Cylinder block1818513

DI±64
± DIAGNOSTICSENGINE
258 Author: Date:
2005 SEQUOIA (RM1146U)P0308
(DI±184)
Cylinder 8 Misfire Detected

Open or short in engine wire

Connector connection

Vacuum hose connection

Ignition system

Injector

Fuel pressure

Mass air flow meter

Engine coolant temperature sensor

Compression pressure

Valve clearance

Valve timing

PCV piping

ECM
*2
P0325
(DI±204)Knock Sensor 1 Circuit (Bank 1
or Single Sensor)
Open or short in knock sensor 1 circuit

Knock sensor 1 (looseness)

ECM

P0327
(DI±204)Knock Sensor 1 Circuit Low In-
put (Bank 1 or Single Sensor)
Short in knock sensor circuit

Knock sensor

ECM

P0328
(DI±204)Knock Sensor 1 Circuit High In-
put (Bank 1 or Single Sensor)
Open in knock sensor circuit

Knock sensor

ECM

P0330
(DI±204)Knock Sensor 2 Circuit (Bank 2)

Open or short in knock sensor 2 circuit

Knock sensor 2 (looseness)

ECM

P0332
(DI±204)Knock Sensor 2 Circuit High In-
put (Bank 2)
Open in knock sensor circuit

Knock sensor

ECM

P0333
(DI±204)Knock Sensor 2 Circuit High In-
put (Bank 2)
Open in knock sensor circuit

Knock sensor

ECM

P0335
(DI±210)Crankshaft Position Sensor ºAº
Circuit

Open or short in crankshaft position sensor circuit

Crankshaft position sensor

Signal plate

ECM

P0339
(DI±210)Crankshaft Position Sensor ºAº
Circuit Intermittent

Open or short in crankshaft position sensor circuit

Crankshaft position sensor

Signal plate

ECM
±
P0340
(DI±216)Camshaft Position Sensor ºAº
Circuit (Bank 1 or Single Sensor)

Open or short in camshaft position sensor circuit

Camshaft position sensor

LH camshaft timing pulley

Jumping teeth of timing belt

ECM

P0341
(DI±216)Camshaft Position Sensor ºAº
Circuit Range/Performance
(Bank 1 or Single Sensor)

Open or short in camshaft position sensor circuit

Camshaft position sensor

LH camshaft timing pulley

Jumping teeth of timing belt

ECM

P0345
(DI±221)Camshaft Position Sensor ºAº
Circuit (Bank 2)
Open or short in camshaft position sensor circuit

VVT sensor

ECM

P0346
(DI±221)Camshaft Position Sensor ºAº
Circuit Range/Performance
(Bank 2)
Open or short in camshaft position sensor circuit

VVT sensor

ECM


A02852
A23658
± DIAGNOSTICSENGINE
DI±83
277 Author: Date:
2005 SEQUOIA (RM1146U)
5 Check VVT controller assembly.
PREPARATION:
(a) Remove the timing belt (See page EM±16).
(b) Remove the cylinder head cover.
(c) Remove the OCV (See page SF±46).
(d) Drain the oil in the VVT controller assembly
(See page EM±36).
CHECK:
Check whether the oil in VVT controller assembly is drained or
not.
OK:
Standard:
The oil in VVT controller assembly is drained.
NG Replace VVT controller assembly, and then go
to step 6.
OK
6 Check oil control valve filter.
PREPARATION:
(a) Remove the cylinder head cover.
(b) Remove the camshaft bearing cap and OCV filter.
CHECK:
Check that the filter is not clogged.
OK:
The filter is not clogged.
NG Repair or replace.
OK

A02961
V5
VVT Sensor (Bank 1)ECM
1
2R
G
Y
LVVL+
VVL±
VVR+
E5 18
19
19
18
VVR±
1
2E5
E4
E4 V6
VVT Sensor (Bank 2)
± DIAGNOSTICSENGINE
DI±87
281 Author: Date:
2005 SEQUOIA (RM1146U)
WIRING DIAGRAM
INSPECTION PROCEDURE
HINT:

If DTC P0016 is displayed, check left bank VVT sensor.

If DTC P0018 is displayed, check right bank VVT sensor.

Read freeze frame data using hand±held tester or OBD II scan tool. Because freeze frame records
the engine conditions when the malfunction is detected. When troubleshooting, it is useful for deter-
mining whether the vehicle was running or stopped, the engine was warmed up or not, the air±fuel ratio
was lean or rich, etc. at the time of the malfunction.
1 Check valve timing (Check for loose and jumping teeth of timing belt) (See page
EM±16).
NG Adjust valve timing (Repair or replace timing
belt).
OK
Replace ECM (See page SF±80).

± DIAGNOSTICSENGINE
DI±201
395 Author: Date:
2005 SEQUOIA (RM1146U)
12 Check compression pressure of misfiring cylinder (See page EM±3).
NG Repair or replace.
OK
13 Check valve clearance of misfiring cylinder (See page EM±4).
NG Adjust valve clearance.
OK
14 Switch step by number of misfire cylinder (Refer to the result of step 4).
High misfire rate cylinderProceed to
1 or 2 cylindersA
More than 3 cylindersB
B Check for intermittent problems
(See page DI±11).
A
15 Check valve timing (Check for looseness or a jumped tooth of timing belt)
(See page EM±9).
NG Adjust valve timing (Repair or replace timing
belt).
OK

DI±216
± DIAGNOSTICSENGINE
410 Author: Date:
2005 SEQUOIA (RM1146U)
DTC P0340 Camshaft Position Sensor ºAº Circuit
(Bank 1 or Single Sensor)
DTC P0341
Camshaft Position Sensor ºAº Circuit Range/Per-
formance (Bank 1 or Single Sensor)
DTC P0345 Camshaft Position Sensor ºAº Circuit
(Bank 2)
DTC P0346 Camshaft Position Sensor ºAº Circuit
Range/Performance (Bank 2)
CIRCUIT DESCRIPTION
The camshaft position sensor consists of a magnet, an iron core and a pick±up coil. This sensor monitors
a timing rotor located on the camshaft and is used by the ECM to detect the camshaft angle. The camshaft
rotation synchronizes with the crankshaft rotation, and this sensor communicates the rotation of the cam-
shaft timing rotor as a pulse signal to the ECM. Based on the signal, the ECM controls fuel injection time
and ignition timing.
If there is no signal from the camshaft position sensor even though the engine is turning or the rotation of
the camshaft and the crankshaft is not synchronized, the ECM interprets this as a malfunction in the sensor
and sets a DTC.
DTC No.DTC Detection ConditionTrouble Area
P0340
No camshaft position sensor signal to ECM during cranking
(2 trip detection logic)
P0340
P0345No camshaft position sensor signal to ECM with engine
speed 600 rpm or more (1 trip detection logic)
Open or short in camshaft position sensor circuit

VVT sensor
P0341
P0346
While crankshaft rotates twice, camshaft position sensor
signal will be input to ECM 12 times or more (1 trip detec-
tion logic)

Hint:
Under normal condition, the camshaft position signal is
input into the ECM 3 times per 2 engine revolutions
VVT sensor

Camshaft

Jumping teeth of timing belt

ECM
DICEZ±02

EM0KS±09
A23300
A23301
EM±4
± ENGINE MECHANICALVALVE CLEARANCE
2583 Author: Date:
2005 SEQUOIA (RM1146U)
VALVE CLEARANCE
INSPECTION
HINT:
Inspect and adjust the valve clearance when the engine is cold.
1. REMOVE BATTERY CLAMP COVER
2. REMOVE THROTTLE BODY COVER
3. REMOVE AIR CLEANER AND INTAKE AIR CONNEC-
TOR ASSEMBLY
4. REMOVE NO.3 TIMING BELT COVERS
(See page EM±16)
5. REMOVE IGNITION COILS (See page IG±5)
6. REMOVE RH CYLINDER HEAD COVER
Remove the 9 bolts, seal washers and cylinder head cover.
7. REMOVE LH CYLINDER HEAD COVER
(a) Remove the oil dipstick for the transmission.
(b) Disconnect the PCV hose.
(c) Disconnect the engine wire clamp from the wire bracket
on the cylinder head cover.
(d) Remove the 9 bolts, 9 seal washers and cylinder head
cover.
8. SET NO.1 CYLINDER TO TDC/COMPRESSION
(a) Turn the crankshaft pulley, and align its groove with timing
mark º0º of the No.1 timing belt cover.
(b) Check that the timing marks of the camshaft timing pul-
leys and timing belt rear plates are aligned.
If not, turn the crankshaft 1 revolution (360°) and align the mark
as above.

A02213
EM±6
± ENGINE MECHANICALVALVE CLEARANCE
2585 Author: Date:
2005 SEQUOIA (RM1146U)
10. ADJUST VALVE CLEARANCE
(a) Remove the timing belt. (See page EM±16)
(b) Remove the camshafts. (See page EM±36)
(c) Remove the valve lifter and adjusting shim.
(d) Determine the replacement adjusting shim size according
to these Formula or Charts:
(1) Using a micrometer, measure the thickness of the
removed shim.
(2) Calculate the thickness of a new shim so that the
valve clearance comes within the specified value.
T ........... Thickness of removed shim
A ........... Measured valve clearance
N ........... Thickness of new shim
Intake: N = T + (A ± 0.20 mm (0.008 in.))
Exhaust: N = T + (A ± 0.30 mm (0.012 in.))
(3) Select a new shim with thickness as close as pos-
sible to the calculated value.
HINT:
Shims are available in 41 increments of 0.020 mm (0.0008 in.),
from 2.00 mm (0.0787 in.) to 2.80 mm (0.1102 in.).
(e) Place a new adjusting shim on the valve.
(f) Place the valve lifter.
(g) Reinstall the camshafts. (See page EM±60)
(h) Reinstall the timing belt. (See page EM±23)
(i) Recheck the valve clearance.
11. REINSTALL CYLINDER HEAD COVERS
12. REINSTALL IGNITION COILS
13. REINSTALL NO.3 TIMING BELT COVERS
(See page EM±23)
14. REINSTALL AIR CLEANER AND INTAKE AIR
CONNECTOR ASSEMBLY
15. REINSTALL THROTTLE BODY COVER
16. REINSTALL BATTERY CLAMP COVER