2005 LEXUS ES300 Repair Manual

141C0-02
A82940
Vane Pump
CrankshaftGenerator Measuring Points for Belt Deflection
or Tension
Compressor
- ENGINE MECHANICALENGINE (3MZ-FE)
14-1
2093 Author
: Date
:
2005 LEXUS ES330 REPAIR MANUAL (RM1124U)
ENGINE (3MZ-FE)
INSPECTION
1. INSPECT ENGINE COOLANT (See page 16-1)
2. INSPECT ENGINE OIL
3. INSPECT BATTERY
Standard specific gravity: 1.25 to 1.29 at 20C (68F)
4. INSPECT AIR CLEANER FILTER ELEMENT SUB-ASSY
5. INSPECT SPARK PLUG (See page 18-3)
6. INSPECT V-RIBBED BELT
(a) Belt deflection:
Pressing force: 98 N (10 kgf, 22 lbf)
New Belt
mm (in.)Used Belt
mm (in.)
V-ribbed Belt
(For fan and generator)9.1 to 10.5
(0.358 to 0.413)11 to 13.5
(0.433 to 0.531)
V-ribbed Belt
(For vane pump)8 to 10
(0.315 to 0.394)11 to 14
(0.433 to 0.551)
(b) Belt tension:
New Belt
N (kg , lb)Used Belt
N (kg , lb)
V-ribbed Belt
(For fan and generator)637 to 735
(65 to 75 , 143 to 165)392 to 588
(40 to 60 , 88 to 132)
V-ribbed Belt
(For vane pump)588 to 686
(60 to 70 , 132 to 154)245 to 392
(25 to 40 , 55 to 88)
NOTICE:

Check the drive belt deflection at the specified point.

When installing a new belt, set its tension value as
specified.

When inspecting a belt which is used for over 5 min-
utes, apply the specification of ºUsed beltº.

When reinstalling a belt which is used for over 5 min-
utes, adjust its belt deflection and tension to the inter-
mediate value of each specification in ºUsed beltº.

The V- ribbed belt tension and deflection value
should be checked after 2 revolutions of engine
cranking.

When using a belt tension gauge, confirm the accura-
cy first by using a master gauge.
7. INSPECT IGNITION TIMING
(a) Warm up engine.
(b) When using the hand-held tester or OBD II scan tool:
(1) Connect the hand-held tester or OBD II scan tool
to the DLC3.
(2) Enter DATA LIST MODE on the hand-held tester or
OBD II scan tool.
Ignition timing: 8 to 12 BTDC
HINT:
Refer to the hand-held tester or OBD II scan tool operator's
manual if you need help to select DATA LIST.

A85669
TC
CG
A82935
Tester TerminalEngine Wire 14-2
- ENGINE MECHANICALENGINE (3MZ-FE)
2094 Author
: Date
:
2005 LEXUS ES330 REPAIR MANUAL (RM1124U)
(c) When not using the hand-held tester or OBD II scan tool:
(1) Using SST, connect terminals 13 (TC) and 4 (CG)
of the DLC3.
SST 09843-18040
NOTICE:

Make sure of the terminal numbers before connecting
them. Connecting wrong terminals can damage the
engine.

Turn OFF all electrical systems before connecting the
terminals.

Perform this inspection after the cooling fan motor is
turned OFF.
(2) Remove the V-bank cover.
(3) Pull out the engine wire colored by black and red as
shown in the illustration.
(4) Connect the tester terminal of the timing light to the
engine.
NOTICE:
Use a timing light which detects the first signal.
(5) Inspect the ignition timing at idle.
Ignition timing: 8 to 12 BTDC
NOTICE:
When checking the ignition timing, the transmission is in
the neutral position.
HINT:
Run the engine at 1,000 to 1,300 rpm for 5 seconds, then check
that the engine speed returns to the idle speed.
(6) Disconnect terminals 13 (TC) and 4 (CG) of the
DLC3.
(7) Inspect the ignition timing at idle.
Ignition timing: 7 to 24 BTDC
(8) Confirm that the ignition timing advances when the
engine speed is increased.
(9) Remove the timing light.
8. INSPECT ENGINE IDLE SPEED
(a) Warm up the engine.
(b) When using the hand-held tester or OBD II scan tool:
(1) Connect the hand-held tester or OBD II scan tool to the DLC3.
(2) Enter DATA LIST MODE on the hand-held tester or OBD II scan tool.
Idle speed: 630 to 730 rpm
NOTICE:

When checking the idle speed, the transmission is in the neutral position.

Check the idle speed with the cooling fan OFF.

Switch OFF all accessories and air conditioning before connecting the hand-held tester or OBD
II scan tool.
HINT:
Refer to the hand-held tester or OBD II scan tool operator's manual for further details.

P19471
Compression Gauge
- ENGINE MECHANICALENGINE (3MZ-FE)
14-3
2095 Author
: Date
:
2005 LEXUS ES330 REPAIR MANUAL (RM1124U)
9. INSPECT COMPRESSION
(a) Warm up and stop the engine.
(b) Remove the intake air surge tank (see page 11-13).
(c) Disconnect the injector connectors.
(d) Remove the ignition coils.
(e) Remove the spark plugs.
(f) Inspect the cylinder compression pressure.
(1) Insert a compression gauge into the spark plug
hole.
SST 09992-00500
(2) Fully open the throttle.
(3) While cranking the engine, measure the compres-
sion pressure.
Compression pressure:
1.5 MPa (15.3 kgf/cm
2, 218 psi)
Minimum pressure:
1.0 MPa (10.2 kgf/cm
2, 145 psi)
Difference between each cylinder:
100 kPa (1.0 kgf/cm
2, 15 psi)
NOTICE:

Always use a fully-charged battery to obtain engine
speed of 250 rpm or more.

Check the other cylinder's compression pressure in
the same way.

This measurement must be done as quickly as pos-
sible.
(4) If the cylinder compression is low, pour a small
amount of engine oil into the cylinder through the
spark plug hole, then inspect again.
HINT:

If adding oil increases the compression, the piston rings
and/or cylinder bore may be worn or damaged.

If pressure stays low, the valve may be sticking or seated
improperly, or there may be leakage past the gasket.
10. INSPECT CO/HC
HINT:
The ECM properly controls the CO/HC concentration in the emission gas.
(a) Start the engine.
(b) Run the engine at 2,500 rpm for approximately 180 seconds.
(c) Insert the CO/HC meter testing probe at least 40 cm (1.3 ft) into the tailpipe during idling.
(d) Check the CO/HC concentration at idle and/or at 2,500 rpm.
HINT:
When doing the 2 mode (with the engine is at idle and at 2,500 rpm) tests, these measuring order are pre-
scribed by the applicable local regulations.
If the CO/HC concentration does not comply with the regulations, troubleshoot in the order given below.
(1) Check the heated oxygen sensor operation (see page 05-126).

14-4
- ENGINE MECHANICALENGINE (3MZ-FE)
2096 Author
: Date
:
2005 LEXUS ES330 REPAIR MANUAL (RM1124U)
(2) See the table below for possible causes, then inspect the applicable causes and repair them if
necessary.
COHCProblemsCauses
NormalHighRough idle
5. Faulty ignitions:

Incorrect timing

Fouled, shorted or improperly gapped plugs
6. Incorrect valve clearance
7. Leaks in intake and exhaust valves
8. Leaks in cylinders
LowHighRough idle
(Fluctuating HC reading)
1. Vacuum leaks:

PCV hoses

Intake manifold

Throttle body

Brake booster line
2. Lean mixture causing misfire
HighHighRough idle
(Black smoke from exhaust)
1. Restricted air filter
2. Plugged PCV valve
3. Faulty SFI systems:

Faulty pressure regulator

Defective engine coolant temperature sensor

Defective mass air flow meter

Faulty ECM

Faulty injectors

Faulty throttle body

14193-03
A78698
B
AC
A78699
A
B
A78699
A
B
A78698
B
AC
- ENGINE MECHANICALDRIVE BELT (3MZ-FE)
14-5
2097 Author
: Date
:
2005 LEXUS ES330 REPAIR MANUAL (RM1124U)
DRIVE BELT (3MZ-FE)
REPLACEMENT
1. REMOVE FRONT WHEEL RH
2. REMOVE FRONT FENDER APRON SEAL RH
3. REMOVE V (COOLER COMPRESSOR TO
CRANKSHAFT PULLEY) BELT NO.1
(a) Loosen bolts A and B.
(b) Loosen the adjusting bolt C, then remove the V-ribbed
belt.
4. REMOVE VANE PUMP V BELT
(a) Loosen bolts A and B, then remove the V-ribbed belt.
5. INSTALL VANE PUMP V BELT
(a) Install the V-ribbed belt on each pulley.
(b) Using a bar, adjust the V-ribbed belt tension, then tighten
bolt B.
Torque: 43 NVm (439 kgfVcm, 32 ftVlbf)
(c) Tighten bolt A.
Torque: 43 NVm (439 kgfVcm, 32 ftVlbf)
6. INSTALL V (COOLER COMPRESSOR TO
CRANKSHAFT PULLEY) BELT NO.1
(a) Install the V-ribbed belt on each pulley.
(b) Tighten the adjusting bolt C, then adjust the V-ribbed belt
tension.
(c) First tighten bolt A, then tighten bolt B.
Torque:
18 NVm (178 kgfVcm, 13 ftVlbf) for bolt A
58 NVm (591 kgfVcm, 43 ftVlbf) for bolt B

14-6
- ENGINE MECHANICALDRIVE BELT (3MZ-FE)
2098 Author
: Date
:
2005 LEXUS ES330 REPAIR MANUAL (RM1124U)
7. INSPECT DRIVE BELT DEFLECTION AND TENSION (See page 14-1)
8. INSTALL FRONT WHEEL RH
Torque: 103 NVm (1,050 kgfVcm, 76 ftVlbf)

141J7-02
A78541
(b)
(b)
(b)(a)
(a)
A36719
P18805
- ENGINE MECHANICALVALVE CLEARANCE (3MZ-FE)
14-7
2099 Author
: Date
:
2005 LEXUS ES330 REPAIR MANUAL (RM1124U)
VALVE CLEARANCE (3MZ-FE)
ADJUSTMENT
1. DISCONNECT BATTERY NEGATIVE TERMINAL
2. DRAIN ENGINE COOLANT (See page 16-9)
3. REMOVE FRONT FENDER APRON SEAL RH
4. REMOVE FRONT SUSPENSION UPPER BRACE CENTER (W/O TEMS) (See page 10-1 1)
5. REMOVE V-BANK COVER SUB-ASSY (See page 10-1 1)
6. REMOVE AIR CLEANER CAP SUB-ASSY (See page 10-1 1)
7. REMOVE EMISSION CONTROL VALVE SET (See page 11-13)
8. REMOVE INTAKE AIR SURGE TANK (See page 11-13)
9. REMOVE RADIATOR HOSE INLET
10. REMOVE IGNITION COIL ASSY
11. REMOVE CYLINDER HEAD COVER SUB-ASSY
(a) Remove the 2 engine wire harness clamps.
(b) Remove the 3 nuts, then disconnect the engine wire har-
ness.
(c) Remove the 9 bolts and cylinder head cover.
12. REMOVE CYLINDER HEAD COVER SUB-ASSY LH
(a) Using an E6 Torx) socket wrench, remove the 2 bolts and
disconnect the engine wire harness protector.
(b) Remove the 9 bolts and cylinder head cover.
13. INSPECT VALVE CLEARANCE
(a) Turn the crankshaft pulley, then align the timing notch with
the timing mark º0º of the timing belt No. 1 cover.
(b) Check that the valve lifters on the intake side of the No.
1 cylinder are not pushed by the cam.
If the valve lifters are pushed, turn the crankshaft by 1 revolution
(360) and align the marks as above.

A78666
LH Bank:EX
IN
1
23
6 Front
13 RH Bank:
6
2
IN
EX
A78667
LH Bank:EX
IN
3
45
2Front
35 RH Bank:
2
4
IN
EX 14-8
- ENGINE MECHANICALVALVE CLEARANCE (3MZ-FE)
2100 Author
: Date
:
2005 LEXUS ES330 REPAIR MANUAL (RM1124U)
(c) Inspect the valves indicated in the illustration on the left.
(1) Using a feeler gauge, measure the clearance be-
tween the valve lifter and camshaft.
Valve clearance (Cold):
0.15 to 0.25 mm (0.0059 to 0.0098 in.) for intake
0.25 to 0.35 mm (0.0098 to 0.0138 in.) for exhaust
(2) Record the out-of-specification valve clearance
measurements. They will be used later to select an
adjusting shim to replace.
(d) Turn the crankshaft by 2/3 of a revolution (240), then in-
spect the valves indicated in the illustration on the left.
(1) Using a feeler gauge, measure the clearance be-
tween the valve lifter and camshaft.
Valve clearance (Cold):
0.15 to 0.25 mm (0.0059 to 0.0098 in.) for intake
0.25 to 0.35 mm (0.0098 to 0.0138 in.) for exhaust
(2) Record the out-of-specification valve clearance
measurements. They will be used later to select an
adjusting shim to replace.