LEXUS ES300 2005 Repair Manual

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.

A86576
Ohmmeter
A86577
Ohmmeter Battery
A86580
Ohmmeter
A86581
Ohmmeter 16-8
- COOLINGCOOLING FAN SYSTEM (3MZ-FE)
2286 Author
: Date
:
2005 LEXUS ES330 REPAIR MANUAL (RM1124U)
3. INSPECT COOLING FAN RELAY NO.3
(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.
4. INSPECT TEMPERATURE DETECT SWITCH
(a) Check the continuity.
(1) Using an ohmmeter, check for continuity between
the terminals.
Standard:
Coolant TemperatureSpecified Condition
Above 98
C (208
F)Continuity
Below 88
C (190
F)No continuity
If the result is not as specified, replace the temperature detect
switch.
5. INSPECT TEMPERATURE DETECT SWITCH NO.2
(a) Check the continuity.
(1) Using an ohmmeter, check for continuity between
the terminals.
Standard:
Coolant TemperatureSpecified Condition
Above 93
C (199
F)Continuity
Below 83
C (181
F)No continuity
If the result is not as specified, replace the temperature detect
switch.

160QF-01
A86582
Drain Cock Plug
Radiator Drain Plug
Drain Cock Plug
Water Outlet Cap
- COOLINGENGINE COOLANT (3MZ-FE)
16-9
2287 Author
: Date
:
2005 LEXUS ES330 REPAIR MANUAL (RM1124U)
ENGINE COOLANT (3MZ-FE)
REPLACEMENT
1. DRAIN ENGINE COOLANT
(a) Remove the water outlet cap from the water outlet.
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) Loosen the radiator drain plug and 2 drain cock plugs,
then drain the coolant.
(c) Close the radiator drain plug.
(d) Tighten the 2 drain cock plugs.
Torque: 13 NVm (130 kgfVcm, 9 ftVlbf)
2. ADD ENGINE COOLANT
(a) Slowly fill the cooling system with coolant.
Capacity: 9.2 liters (9.7 US qts, 8.1 lmp. qts)
HINT:

Use of improper coolants may damage the engine cooling system.

Use 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.

New Toyota vehicles are filled with Toyota Super Long Life Coolant (color is pink, premixed ethylene-
glycol concentration is approximately 50% and freezing temperature is -35C (-31F)). When replac-
ing the coolant, Toyota Super Long Life Coolant is recommended.

Observe the coolant level inside the radiator by pressing the inlet and outlet radiator hoses several
times by hand. If the coolant level goes down, add the coolant.
NOTICE:
Do not use plain water alone.
3. CHECK FOR ENGINE COOLANT LEAKS
(a) Fill the radiator with coolant, then attach a radiator cap tester.
(b) Pump it to 118 kPa (1.2
kgf/cm2
17.1 psi), then check for leakage.

160QG-01
A84916
64 (653, 47)
64 (653, 47)
Front Fender Apron
Seal RH
Vane Pump V Belt
V Belt No. 1
Generator Bracket No. 2
Engine Mounting Stay No. 2 RHEngine Moving Control Rod
N´m (kgf´cm, ft´lbf)
: Specified torque
23 (235, 17)
58 (591, 43)
28 (286, 21)
Radio Setting Condenser
16-10
- COOLINGWATER PUMP ASSY (3MZ-FE)
2288 Author
: Date
:
2005 LEXUS ES330 REPAIR MANUAL (RM1124U)
WATER PUMP ASSY (3MZ-FE)
COMPONENTS

A78353
N´m (kgf´cm, ft´lbf)
: Specified torque
8.5 (87, 75 in.Vlbf)
220 (2,250, 162)8.5 (87, 75 in.Vlbf)
28 (286, 21)
27 (280, 20)
Timing Belt Tensioner AssyCrankshaft PulleyTiming Belt No. 1 Cover
Timing Belt Guide No. 2
Engine Mounting Bracket RH Timing Belt No. 2 Cover
Timing Belt
Engine Wire
Protector
- COOLINGWATER PUMP ASSY (3MZ-FE)
16-1 1
2289 Author
: Date
:
2005 LEXUS ES330 REPAIR MANUAL (RM1124U)