2005 LEXUS ES300 Repair Manual

A86216
Keyway
KeyPlastic-faced
Hammer
- EXHAUSTEXHAUST PIPE ASSY (3MZ-FE)
15-5
2278 Author
: Date
:
2005 LEXUS ES330 REPAIR MANUAL (RM1124U)
14. INSTALL TAIL PIPE BAFFLE
(a) Align the keyway of the tail pipe baffle with the key on the
exhaust pipe tail.
(b) Using a plastic-faced hammer, tap the tail pipe baffle to
install.
15. INSTALL EXHAUST PIPE ASSY TAIL
(a) Install a new gasket and the exhaust pipe tail to the 3 exhaust pipe supports.
(b) Tighten the 2 new nuts.
Torque: 56 NVm (574 kgfVcm, 41 ftVlbf)
16. INSTALL HEATED OXYGEN SENSOR (See page 12-24)
SST 09224-00010
17. CONNECT ENGINE WIRE NO. 3 (BATTERY NEGATIVE TERMINAL)
Torque: 5.4 NVm (55 kgfVcm, 48 in.Vlbf)
18. CHECK FOR EXHAUST GAS LEAKS
19. INSTALL FLOOR PANEL BRACE REAR
Torque: 20 NVm (199 kgfVcm, 14 ftVlbf)
20. SYSTEM INITIALIZATION (See page 19-15)

160QB-01
A60522
Radiator Cap
Tester
- COOLINGCOOLING SYSTEM (3MZ-FE)
16-1
2279 Author
: Date
:
2005 LEXUS ES330 REPAIR MANUAL (RM1124U)
COOLING SYSTEM (3MZ-FE)
ON-VEHICLE INSPECTION
1. INSPECT COOLING SYSTEM FOR LEAKS
(a) Remove the water outlet cap.
CAUTION:
To avoid the danger of being burned, do not remove the wa-
ter outlet cap while the engine and radiator are still hot.
Thermal expansion will cause hot engine coolant and
steam to blow out from the radiator.
(b) Fill the radiator with coolant, then attach a radiator cap
tester.
(c) Warm up the engine.
(d) Pump it to 118 kPa (1.2 kgf/cm
2, 17.1 psi), then check that
the pressure does not drop.
If the pressure drops, check the hoses, radiator and water
pump for leaks. If there are no signs or traces of external coolant
leaks, check the heater core, cylinder block and head.
(e) Reinstall the water outlet cap.
2. CHECK ENGINE COOLANT LEVEL AT RESERVOIR
(a) The engine coolant should be between the ºLOWº and ºFULLº lines when the engine is cold.
If low, check for leaks and add ºToyota Super Long Life Coolantº or similar high quality ethylene glycol based
non-silicate, non-amine, non-nitrite, and non-borate coolant with long-life hybrid organic acid technology
up to the ºFULLº line.
3. CHECK ENGINE COOLANT QUALITY
(a) Remove the water outlet cap.
CAUTION:
To avoid the danger of being burned, do not remove the water outlet cap while the engine and radiator
are still hot. Thermal expansion will cause hot engine coolant and steam to blow out from the radiator.
(b) Check if there are any excessive deposits of rust or scale around the water outlet cap and water outlet
filler hole; the coolant should free of oil.
If excessively dirty, replace the coolant.
(c) Reinstall the water outlet cap.

A73603
16-2
- COOLINGCOOLING SYSTEM (3MZ-FE)
2280 Author
: Date
:
2005 LEXUS ES330 REPAIR MANUAL (RM1124U)
4. INSPECT FIN BLOCKAGE
(a) If the fins are clogged, wash them with water or a steam
cleaner, then dry with compressed air.
NOTICE:

If the distance between the steam cleaner and core is
too close, there is a possibility of damaging the fins,
so keep the following injection distance.
Injection Pressure
kPa (kgf/cm2, psi)
Injection Distance
mm (in.)
2,942 to 4,903
(30 to 50, 427 to 711)300 (11.811)
4,903 to 7,845
(50 to 80, 711 to 1,138)500 (19.685)

If the fins are bent, straighten them with a screwdriver
or pliers.

Be careful not to expose electronic components to
water.

160QD-01
A86555
A86554
A86556
B09432
- COOLINGCOOLING FAN SYSTEM (3MZ-FE)
16-5
2283 Author
: Date
:
2005 LEXUS ES330 REPAIR MANUAL (RM1124U)
COOLING FAN SYSTEM (3MZ-FE)
ON-VEHICLE INSPECTION
1. CHECK COOLING FAN OPERATION AT LOW TEM-
PERATURE (Below 83
C (181
F))
(a) Turn the ignition switch ON.
(b) Check that the fan and fan No. 2 stops.
If not, check the cooling fan relays and temperature detect
switches.
(c) Disconnect the temperature detect switch connector.
(d) Connect the terminals of the temperature detect switch
wire connector.
(e) Check that the fan rotates at high speed.
If not, check the cooling fan relay and fan.
(f) Reconnect the temperature detect switch connector.
(g) Disconnect the temperature detect switch No. 2 connec-
tor.
(h) Ground the terminal on the temperature detect switch No.
2 wire harness side connector.

A86557
A86558
Ammeter
Battery
A86559
Ammeter
Battery 16-6
- COOLINGCOOLING FAN SYSTEM (3MZ-FE)
2284 Author
: Date
:
2005 LEXUS ES330 REPAIR MANUAL (RM1124U)
(i) Check that the fan and fan No. 2 rotates at low speed.
If not, check the cooling fan relay No. 2, cooling fan relay No.
3 and No. 2 fan.
(j) Reconnect the temperature detect switch No. 2 connec-
tor.
2. INSPECT FAN
(a) Disconnect the fan connector.
(b) Connect battery and ammeter to the fan connector.
(c) Check that the fan rotates smoothly, then check the read-
ing on the ammeter.
Standard amperage: 10.2 to 16.2 A at 20
C (68
F)
(d) Reconnect the fan connector.
3. INSPECT NO. 2 FAN
(a) Disconnect the No. 2 fan connector.
(b) Connect the battery and ammeter to the No. 2 fan con-
nector.
(c) Check that the No. 2 fan rotates smoothly, then check the
reading on the ammeter.
Standard amperage: 10.2 to 16.2 A at 20
C (68
F)
(d) Reconnect the No. 2 fan connector.

160QC-01
P13560
P00436
A85445
10 mm
(0.39 in.)
- COOLINGCOOLING SYSTEM (3MZ-FE)
16-3
2281 Author
: Date
:
2005 LEXUS ES330 REPAIR MANUAL (RM1124U)
INSPECTION
1. INSPECT THERMOSTAT
HINT:
The thermostat is inscribed with the valve opening temperature.
(a) Immerse the thermostat in water, then gradually heat the
water.
(b) Inspect the valve opening temperature of the thermostat.
Valve opening temperature:
80 to 84C (176 to 183F)
If the valve opening temperature is not as specified, replace the
thermostat.
(c) Inspect the valve lift.
Valve lift: 10 mm (0.39 in.) or more at 95C (203F)
If the valve lift is not as specified, replace the thermostat.
(d) Check that the valve is fully closed when the thermostat
is at low temperature (below 77C (171F)).
If not fully closed, replace the thermostat.
2. INSPECT WATER OUTLET CAP SUB-ASSY
NOTICE:

If the water outlet cap is contaminated, rinse it with
water.

Before using a radiator cap tester, wet the relief valve
and pressure valve with engine coolant or water.

When performing the following steps (a) and (b), keep
the tester at an angle of over 30 above horizontal.

A85446
Radiator Cap Tester
30 or more
Water Outlet Cap 16-4
- COOLINGCOOLING SYSTEM (3MZ-FE)
2282 Author
: Date
:
2005 LEXUS ES330 REPAIR MANUAL (RM1124U)
(a) Using a radiator cap tester, slowly pump the tester and
check that air is coming from the vacuum valve.
Pump speed: 1 push / 3 seconds or more
NOTICE:
Push the pump at a constant speed.
If air is not coming from the vacuum valve, replace the water
outlet cap.
(b) Pump the tester, then measure the relief valve opening
pressure.
Pump speed: 1 push within 1 second
NOTICE:
The above pump speed is for the first pump only (in order
to close the vacuum valve). After the first pump, the pump
speed can be reduced.
Standard opening pressure:
83 to 113 kPa (0.85 to 1.15 kgf/cm
2, 12.1 to 16.4 psi)
Minimum opening pressure:
69 kPa (0.7 kgf/cm
2, 10.0 psi)
HINT:
Use the tester's maximum reading as the opening pressure.
If the opening pressure is less than minimum, replace the water
outlet cap.

160QE-01
A86576
Ohmmeter
A86577
Ohmmeter Battery
A86578
Ohmmeter Ohmmeter
A86579
Ohmmeter OhmmeterBattery
- COOLINGCOOLING FAN SYSTEM (3MZ-FE)
16-7
2285 Author
: Date
:
2005 LEXUS ES330 REPAIR MANUAL (RM1124U)
INSPECTION
1. INSPECT COOLING FAN RELAY
(a) Check the continuity.
(1) Using an ohmmeter, check for continuity between
the terminals.
Standard:
Tester ConnectionSpecified Condition
1 - 2Continuity
3 - 5No continuity
If the result is not as specified, replace the cooling fan relay.
(b) Check the operation.
(1) Apply battery positive voltage across terminals 1
and 2.
(2) Using an ohmmeter, check that there is continuity
between terminals 3 and 5.
If there is no continuity, replace the cooling fan relay.
2. INSPECT COOLING FAN RELAY NO.2
(a) Check the continuity.
(1) Using an ohmmeter, check for continuity between
the terminals.
Standard:
Tester ConnectionSpecified Condition
1 - 2Continuity
3 - 4Continuity
3 - 5No continuity
If the result is not as specified, replace the cooling fan relay.
(b) Check the operation.
(1) Apply battery positive voltage across terminals 1
and 2.
(2) Using an ohmmeter, check that there is no continu-
ity between terminals 3 and 4.
If there is continuity, replace the cooling fan relay.
(3) Using an ohmmeter, check that there is continuity
between terminals 3 and 5.
If there is no continuity, replace the cooling fan relay.