Page 552 of 1897
P20106
Terminal F CH-4
- CHARGINGCHARGING SYSTEM
1277 Author: Date:
2001 AVALON (RM808U)
If the voltmeter reading is more than standard voltage, replace
the voltage regulator.
If the voltmeter reading is less than standard voltage, check the
voltage regulator and generator as follows:
With terminal F grounded, start the engine and
check the voltmeter reading of terminal B.
If the voltmeter reading is more than standard volt-
age, replace the voltage regulator.
If the voltmeter reading is less than standard volt-
age, check the generator.
9. INSPECT CHARGING CIRCUIT WITH LOAD
(a) With the engine running at 2,000 rpm, turn on the high
beam headlights and place the heater blower switch at
ºHIº.
(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.
Page 568 of 1897
CO02K-03
- COOLINGCOOLANT
CO-1
1194 Author: Date:
2001 AVALON (RM808U)
COOLANT
INSPECTION
1. CHECK ENGINE COOLANT LEVEL AT RADIATOR RESERVOIR
The engine coolant level should be between the ºLOWº and ºFULLº lines, when the engine is cold.
If low, check for leaks and add ''Toyota Long Life Coolantº or Equivalent up to the ºFULLº line.
2. CHECK ENGINE COOLANT QUALITY
(a) Remove the radiator cap from the water outlet.
CAUTION:
To avoid the danger of being burned, do not remove the radiator cap while the engine and radiator
are still hot, as fluid and steam can be blown out under pressure.
(b) There should not be any excessive deposits of rust or scale around the radiator cap or water outlet
filler hole, and the coolant should be free from oil.
If excessively dirty, clean the coolant passages and replace the coolant.
(c) Reinstall the radiator cap.
Page 569 of 1897
CO02L-03
B09030Drain PlugDrain Plug
CO-2
- COOLINGCOOLANT
1195 Author: Date:
2001 AVALON (RM808U)
REPLACEMENT
1. DRAIN ENGINE COOLANT
(a) Remove the radiator cap from the water outlet.
CAUTION:
To avoid the danger of being burned, do not remove the ra-
diator cap while the engine and radiator are still hot, as fluid
and steam can be blown out under pressure.
(b) Loosen the radiator drain plug and engine drain plugs,
and drain the coolant.
(c) Close the drain plugs.
Torque:
RH engine drain plug on cylinder block side cover:
7 N´m (70 kgf´cm, 61 in.´lbf)
LH engine drain plug on union:
13 N´m (130 kgf´cm, 9 ft´lbf)
2. FILL ENGINE COOLANT
(a) Slowly fill the system with coolant.
Use of improper coolants may damage engine cool-
ing system.
Use ºToyota Long life Coolantº or equivalent and
mix it with plan water according to the manufactur-
er's directions.
Using of coolant which includes more than 50 %
(freezing protection down to -35°C (-31°F) or 60 %
(freezing protection down to -50°C (-58°F)) of eth-
ylene-glycol is recommended but not more than 70
%.
NOTICE:
Do not use an alcohol type coolant or plain water
alone.
The coolant should be mixed with plain water (prefer-
ably demineralized water or distilled water).
Capacity: 9.0 liters (9.5 US qts, 7.9 lmp. qts)
(b) Install the radiator cap.
(c) Start the engine, and bleed the cooling system.
(d) If necessary, refill coolant into the reservoir up to the
ºFULLº line.
3. CHECK ENGINE COOLANT FOR LEAKS
4. CHECK ENGINE COOLANT SPECIFIC GRAVITY COR-
RECTLY
Page 570 of 1897
CO0WV-01
B09038
No.1 Cooling FanNo.1 Cooling Fan Connector
Hold-Down
Clamp
Non-reusable partNutFanFan Shroud
Fan Motor
No.1
Battery
Insulator
Battery
Battery
Tray
Cruise Control
Actuator
No.3 Engine Room
Relay Block
- COOLINGELECTRIC COOLING FAN
CO-25
1218 Author: Date:
2001 AVALON (RM808U)
COMPONENTS
Page 575 of 1897
CO09O-02
B09051
No.1
B09052
No.2
- COOLINGELECTRIC COOLING FAN
CO-27
1220 Author: Date:
2001 AVALON (RM808U)
REMOVAL
REMOVE COOLING FANS
(a) Remove the No.1 cooling fan.
(1) Remove the batter and battery tray.
(2) Disconnect the cruise control actuator.
(3) Disconnect the No.3 engine room relay block from
radiator.
(4) Disconnect the cooling fan connector.
(5) Disconnect the wire clamps from the fan shroud.
(6) Remove the 2 bolts and cooling fan.
Torque: 5.0 N´m (50 kgf´cm, 44 in.´lbf)
(b) Remove the No.2 cooling fan.
(1) Drain the engine coolant.
(2) Disconnect the upper radiator hose from the radia-
tor.
(3) Disconnect the cooling fan and No.1 ECT switch
wire connectors.
(4) Disconnect the wire clamps from the fan shroud.
(5) Disconnect the No.1 ECT switch connector.
(6) Remove the 2 bolts and cooling fan.
Torque: 5.0 N´m (50 kgf´cm, 44 in.´lbf)
Page 576 of 1897
CO037-03
S04602No.1 ECT Switch
P01924
Ohmmeter
B04397
No.2 ECT
Switch
P06722
Ohmmeter
- COOLINGENGINE COOLANT TEMPERATURE (ECT) SWITCH
CO-29
1222 Author: Date:
2001 AVALON (RM808U)
ENGINE COOLANT
TEMPERATURE (ECT) SWITCH
INSPECTION
1. DRAIN ENGINE COOLANT
2. INSPECT NO.1 ECT SWITCH
(a) Remove the No.1 ECT switch.
(b) Inspect the No.1 ECT switch.
(1) Using an ohmmeter, check that there is continuity
between the terminals when the coolant tempera-
ture is above 98°C (208°F).
If there is no continuity, replace the switch.
(2) Check that there is no continuity, between the termi-
nals when the coolant temperature is below 88°C
(190°F).
If there is continuity, replace the switch.
(c) Reinstall the No.1 ECT switch.
3. INSPECT NO.2 ECT SWITCH
(a) Remove the No.2 ECT switch.
(b) Inspect the No.2 ECT switch.
(1) Using an ohmmeter, check that there is continuity
between terminals when the coolant temperature is
above 93°C (199°F).
If there is no continuity, replace the switch.
(2) Check that there is no continuity between the termi-
nals when the coolant temperature is below 83°C
(181°F).
If there is continuity, replace the switch.
(c) Reinstall the No.2 ECT switch.
Page 577 of 1897
CO-30
- COOLINGENGINE COOLANT TEMPERATURE (ECT) SWITCH
1223 Author: Date:
2001 AVALON (RM808U)
4. REFILL ENGINE COOLANT
5. START ENGINE AND CHECK FOR COOLANT LEAKS
Page 578 of 1897
CO02W-03
B09039
Radiator
No.1 ECT Switch
No.2 Cooling Fan Connector
Upper Radiator
Support
Upper Radiator
HoseNo.1 Cooling Fan Connector
No.1 ECT Switch Wire Connector
Radiator Assembly
Lower Radiator
Support O-Ring
A/T Oil Cooler Hose
No.3 Engine
Room Relay Block No.1 Cooling Fan
Non-reusable part O-Ring
Drain Plug
Lower Radiator
Hose
No.2 Cooling Fan
Battery
Insulator
Battery
Battery
Tray Hold-Down
Clamp
Engine Under Cover
- COOLINGRADIATOR
CO-15
1208 Author: Date:
2001 AVALON (RM808U)
COMPONENTS
