2001 TOYOTA HIGHLANDER radiator

2005 HIGHLANDER (EWD592U)
291
The radiator fan motor and condenser fan motor operates according to the water temp. SW NO.1, water temp. SW NO.2,
A/C single pressure SW, and the A/C system condition. The FAN NO.1 relay, FAN NO.2 relay, FAN NO.3 relay are turned
on/off, to operate the fan motors at low speed (In series), or high speed (In parallel).
Low Speed Operation
When the A/C system is operated, or the water temp. SW no.2 is turned on, the condenser fan motor and radiator fan motor
rotate at low speed.
High Speed Operation
When the A/C single pressure SW is turned on, or the water temp. SW no.1 is turned on, the condenser fan motor and
radiator fan motor rotate at high speed.
A3 Pressure SW
3-2 : Close above approx. 15.5 kgf/cm2 (220 psi, 1520 kpa)
Open below approx. 12.5 kgf/cm2 (178 psi, 1226 kpa)
W3 Water Temp. SW No. 1
2-1 : Close above approx. 95°C (203°F)
W4 Water Temp. SW No. 2
1-Ground : Close above approx. 90°C (198°F)
: PARTS LOCATION
CodeSee PageCodeSee PageCodeSee Page
A338 (3MZ-FE)E9C42J543
C538 (3MZ-FE)F738 (3MZ-FE)R139 (3MZ-FE)
D242J239 (3MZ-FE)W339 (3MZ-FE)
E6B42J439 (3MZ-FE)W439 (3MZ-FE)
: RELAY BLOCKS
CodeSee PageRelay Blocks (Relay Block Location)
222Engine Room R/B (Engine Compartment Left)
: JUNCTION BLOCK AND WIRE HARNESS CONNECTOR
CodeSee PageJunction Block and Wire Harness (Connector Location)
1G29Cowl Wire and Instrument Panel J/B (Lower Finish Panel)
2A
2B
2E27Engine Room Main Wire and Engine Room J/B (Engine Compartment Left)
2F
gg(g)
2G
: CONNECTOR JOINING WIRE HARNESS AND WIRE HARNESS
CodeSee PageJoining Wire Harness and Wire Harness (Connector Location)
EB248 (3MZ-FE)Engine Wire and Engine Room Main Wire (Front Side of Engine Room R/B)
IK254Engine Room Main Wire and Cowl Wire (Right Cowl Side Panel)IK354Engine Room Main Wire and Cowl Wire (Right Cowl Side Panel)
: GROUND POINTS
CodeSee PageGround Points Location
EB48 (3MZ-FE)Right Front Fender Apron
EG48 (3MZ FE)Under the Left HeadlightEH48 (3MZ-FE)Under the Left Headlight
System Outline
Service Hints

2005 HIGHLANDER (EWD592U)
292
Radiator Fan and Condenser Fan for 3MZ-FE
: SPLICE POINTS
CodeSee PageWire Harness with Splice PointsCodeSee PageWire Harness with Splice Points
E248 (3MZ-FE)Engine Room Main Wire

2005 HIGHLANDER (EWD592U)
294
Radiator Fan and Condenser Fan for 2AZ-FE
30A RDI
6
30A CDS
4
140A ALT
1
W
F 7
WY
51 3222
22
EB2 2
1 225 13
4 22
22 2
2G 32G82B3
2E 2
W- BR- Y
2 3
EH A
L- Y
R- W
W- B
R- YL- R
R- L
L- Y B- R B- RW
R- Y W- B
B- Y
R- Y
R- Y B- R B- RY
B- Y W- B
R- W BatteryFA N
NO. 3
RelayFAN
NO. 2
Relay
C 5
A 3
J 2 FL MAIN
3. 0W
2G 2
2F 4
W- B
W- B M
A
Single
Pressure SWCondenser Fan Motor
Fusible Link Block
Junction
Connector

2005 HIGHLANDER (EWD592U)
295
25 1322
22
R- Y
B- Y
1 2
B- Y L- W
W- B
EG
W- BR- W
B- Y2G 7
2A 82G 6
A A
IK2 7
Y B- RB- R
Y
B- R
B- R
B- R FAN NO. 1
Relay
R 1J 5
B- Y
R- Y
R- Y B- R B- RY
R- W10A
HEATER
1G 8
FAN
CFE 2
E 14 E19
C 82 1
G- B
E 2
THWBR
EB2 5MFrom Power Source System (
See Page 62)
E 7(
E)
, E 9(
C)
Engine Coolant
Temp. Sensor
Engine Contr ol
ModuleJunction
Connector
Radiator Fan
Motor
E 28
E2A 5
B 5
BR
Shor t Connector S28(
A)
, S29(
B)

2005 HIGHLANDER (EWD592U)
296
Radiator Fan and Condenser Fan for 2AZ-FE
The radiator fan motor and condenser fan motor operates according to the engine coolant temp. SW, A/C single pressure
SW, the engine system condition, and the A/C system condition. The FAN NO.1 relay, FAN NO.2 relay, FAN NO.3 relay are
turned on/off, to operate the fan motors at low speed (In series), or high speed (In parallel).
1. Low Speed Operation
Either when the A/C system is operating, the radiator fan motor and A/C condenser fan motor operates at low speed.
2. High Speed Operation
When either the engine coolant temp. SW or A/C single pressure SW is, or both of them are turned on, the radiator fan motor
and A/C condenser fan motor operate at high speed.
A3 Pressure SW
3-2 : Open above approx. 15.5 kgf/cm2 (220 psi, 1520 kpa)
Close below approx. 12.5 kgf/cm2 (178 psi, 1226 kpa)
: PARTS LOCATION
CodeSee PageCodeSee PageCodeSee Page
A340 (2AZ-FE)E9C42R141 (2AZ-FE)
C540 (2AZ-FE)F740 (2AZ-FE)S28A43
E240 (2AZ-FE)J241 (2AZ-FE)S29B43
E7E42J543
: RELAY BLOCKS
CodeSee PageRelay Blocks (Relay Block Location)
222Engine Room R/B (Engine Compartment Left)
: JUNCTION BLOCK AND WIRE HARNESS CONNECTOR
CodeSee PageJunction Block and Wire Harness (Connector Location)
1G29Cowl Wire and Instrument Panel J/B (Lower Finish Panel)
2A
2B
2E27Engine Room Main Wire and Engine Room J/B (Engine Compartment Left)
2F
gg(g)
2G
: CONNECTOR JOINING WIRE HARNESS AND WIRE HARNESS
CodeSee PageJoining Wire Harness and Wire Harness (Connector Location)
EB250 (2AZ-FE)Engine Wire and Engine Room Main Wire (Front Side of Engine Room R/B)
IK254Engine Room Main Wire and Cowl Wire (Right Cowl Side Panel)
: GROUND POINTS
CodeSee PageGround Points Location
EG50 (2AZ FE)Under the Left HeadlightEH50 (2AZ-FE)Under the Left Headlight
: SPLICE POINTS
CodeSee PageWire Harness with Splice PointsCodeSee PageWire Harness with Splice Points
E250 (2AZ-FE)Engine Room Main Wire
System Outline
Service Hints

'05 HIGHLANDER_U (L/O 0409)
372
2005 HIGHLANDER from Nov. '04 Prod. (OM48570U)
1. Engine coolant reservoir
2. Power steering fluid reservoir
3. Engine oil filler cap
4. Engine oil level dipstick
5. Fuse blocks
6. Brake fluid reservoir
7. Battery
8. Radiator
9. Condenser
10. Electric cooling fans
11. Windshield and rear window washer
fluid tank
Engine compartment overview

2AZ- FE engine

'05 HIGHLANDER_U (L/O 0409)
373
2005 HIGHLANDER from Nov. '04 Prod. (OM48570U)
1. Engine coolant reservoir
2. Power steering fluid reservoir
3. Engine oil level dipstick
4. Engine oil filler cap
5. Fuse blocks
6. Brake fluid reservoir
7. Battery
8. Radiator
9. Condenser
10. Electric cooling fans
11. Windshield and rear window washer
fluid tank
3MZ- FE engine

'05 HIGHLANDER_U (L/O 0409)
375
2005 HIGHLANDER from Nov. '04 Prod. (OM48570U)
If you perform maintenance by yourself,
be sure to follow the correct procedure
given in this Section.
You should be aware that improper or in-
complete servicing may result in operating
problems.
Performing do- it- yourself maintenance
during the warranty period may affect your
warranty coverage. Read the separate
Toyota Warranty statement for details and
suggestions.
This Section gives instructions only for
those items that are relatively easy for an
owner to perform. As explained in Section
6, there are still a number of items that
must be done by a qualified technician
with special tools.
For information on tools and parts for do-
it- yourself maintenance, see Parts and
toolsº on page 377 in this Section.
Utmost care should be taken when work-
ing on your vehicle to prevent accidental
injury. Here are a few precautions that
you should be especially careful to ob-
serve:CAUTION
When the engine is running, keep
hands, clothing, and tools away
from the moving fan and engine
drive belts. (Removing rings,
watches, and ties is advisable.)
Right after driving, the engine
compartmentÐthe engine, radiator,
exhaust manifold, power steering
fluid reservoir and spark plug
boots, etc.Ðwill be hot. So be care-
ful not to touch them. Oil, fluids
and spark plugs may also be hot.
If the engine is hot, do not remove
the radiator cap or loosen the drain
plugs to prevent burning yourself.
Do not leave anything that may
burn easily, such as paper or rags,
in the engine compartment.
Do not smoke, cause sparks or al-
low open flames around fuel or the
battery. Their fumes are flammable.
Do not get under your vehicle with
just the body jack supporting it. Al-
ways use automotive jack stands or
other solid supports.
Be sure that the ignition is off if
you work near the electric cooling
fans or radiator grille. With the
ignition on, the electric cooling fans
will automatically start to run if the
engine coolant temperature is high
and/or the air conditioning is on.
Use eye protection whenever you
work on or under your vehicle
where you may be exposed to flying
or falling material, fluid spray, etc.
Used engine oil contains potentially
harmful contaminants which may
cause skin disorders such as in-
flammation or skin cancer, so care
should be taken to avoid prolonged
and repeated contact with it. To re-
move used engine oil from your
skin, wash thoroughly with soap
and water.
Do not leave used oil within the
reach of children.
Dispose of used oil and filter only
in a safe and acceptable manner.
Do not dispose of used oil and fil-
ter in household trash, in sewers or
onto the ground. Call your dealer or
a service station for information
concerning recycling or disposal.
Do- it- yourself service
precautions