TOYOTA HIGHLANDER 2001 Service Repair Manual

2005 HIGHLANDER (EWD592U)
11 4
ECT and A/T Indicator for 2AZ-FE
Y
BR
10A
HEATER
1K 13 4 2A7. 5A
ECU- B
IC3 5
1G 10
1K 1 3A 4
3C 7
B P
LG W- LBR
3F 9
3D 3
VLG
4H 6
4D 11 10A
DOME
2A 3
R VV
V12 IK3
IL2 11
23K 12 3BA 11
R
6B 1
13 B
Speedometer
7V 5V A2A12A
IB B 6
S27
SP1 12
BR- R BR GR
15 IC4 18 IF3
3B 13J 9
YW
LCD C11(
A)
, C12(
B)From Power Source System (
See Page 62)
Combination Meter
Skid Contr ol ECU
with Actuator

2005 HIGHLANDER (EWD592U)
11 5
Previous automatic transaxle have selected each gear shift using mechanically controlled throttle hydraulic pressure,
governor hydraulic pressure and lock-up hydraulic pressure. The electronically controlled transmission, however, electrically
controls the line pressure, throttle pressure, lock-up pressure and accumulator pressure etc. through the solenoid valve. The
electronically controlled transmission is a system which precisely controls gear shift timing and lock-up timing in response to
the vehicle's driving conditions and the engine condition detected by various sensors. It makes smooth driving possible by
shift selection for each gear which is the most appropriate to the driving conditions at that time, and by preventing downing,
squat and gear shift shock when starting off.
1. Gear Shift Operation
During driving the engine warm up condition signal is input from engine coolant temp. sensor to TERMINAL THW of the
engine control module, and the vehicle speed signal is input from the ABS speed sensor to skid control ECU, and are sent to
the engine control module through communication control. At the same time, the throttle valve opening signal is sent from
the throttle position sensor to the TERMINALS VTA1 and VTA2 of the engine control module, as the throttle angle signal.
2. Lock-Up Operation
When the engine control module decides based on each signal that the lock-up condition has been met, the current flows
through TERMINAL DSL of the engine control module to TERMINAL 3 of the electronically controlled transmission solenoid
to GROUND.
3. Stop Light SW Circuit
If the brake pedal is depressed (Stop light SW on) when driving in lock-up condition, a signal is input to TERMINAL STP of
the engine control module. The engine control module operates and cuts the current to the solenoid to release lock-up.
4. Overdrive Circuit
*O/D main SW on
When the O/D main SW is turned on, a signal is input to TERMINAL ODMS of the engine control module and engine
control module operation causes gear shift when the conditions for overdrive are met.
*O/D main SW off
When the O/D main SW is turned off, a signal is input into TERMINAL ODMS of the engine control module, and turns on
the O/D off indicator light. This activates the ECU, and the transmission system is controlled not to shift to overdrive.
E4 Electronically Controlled Transmission Pattern Select SW
3-4 : Closed with the select SW at SNOW position
E5 (A), E6 (B), E7 (E), E8 (D), E9 (C) Engine Control Module
BATT-E1 : Always approx. 12 volts
MREL-E1 : Approx. 12 volts with the ignition SW ON position
P1 A/T Indicator SW
2-6 : Closed with the shift lever in P position
2-1 : Closed with the shift lever in R position
2-9 : Closed with the shift lever in N position
2-7 : Closed with the shift lever in D position
2-3 : Closed with the shift lever in 2 position
2-8 : Closed with the shift lever in L position
: PARTS LOCATION
CodeSee PageCodeSee PageCodeSee Page
A10A42E6B42S1543
A11B42E7E42S2741 (2AZ-FE)
A1742E8D42S28A43
B9A42E9C42S29B43
B10B42E1040 (2AZ-FE)S30A43
C640 (2AZ-FE)G543S31B43
C11A42J241 (2AZ-FE)T341 (2AZ-FE)
C12B42J643T1341 (2AZ-FE)
E240 (2AZ-FE)J743T1643
E442P141 (2AZ-FE)
E5A42P544
System Outline
Service Hints

2005 HIGHLANDER (EWD592U)
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ECT and A/T Indicator for 2AZ-FE
: JUNCTION BLOCK AND WIRE HARNESS CONNECTOR
CodeSee PageJunction Block and Wire Harness (Connector Location)
1E29Cowl Wire and Instrument Panel J/B (Lower Finish Panel)1G29Cowl Wire and Instrument Panel J/B (Lower Finish Panel)
1K28Instrument Panel Wire and Instrument Panel J/B (Lower Finish Panel)
2A
2B27Engine Room Main Wire and Engine Room J/B (Engine Compartment Left)
2F
gg(g)
3A
3B
3C303D30
3EInstrument Panel Wire and Center J/B (Behind the Instrument Panel Center)
3F
()
3H
3J31
3K
4A
4D
4E33
4FCowl Wire and Passenger Side J/B (Right Side of Grove Box)4HCowl Wire and Passenger Side J/B (Right Side of Grove Box)
4K
4L32
4M
: CONNECTOR JOINING WIRE HARNESS AND WIRE HARNESS
CodeSee PageJoining Wire Harness and Wire Harness (Connector Location)
IB252Front Door LH Wire and Cowl Wire (Left Kick Panel)
IC352Engine Room Main Wire and Cowl Wire (Left Cowl Side Panel)IC452Engine Room Main Wire and Cowl Wire (Left Cowl Side Panel)
IF352Instrument Panel Wire and Cowl Wire (Right Side of Instrument Panel J/B)
IK254Engine Room Main Wire and Cowl Wire (Right Cowl Side Panel)IK354Engine Room Main Wire and Cowl Wire (Right Cowl Side Panel)
IL254Instrument Panel Wire and Cowl Wire (Upper Side of Passenger Side J/B)
IM154Engine Wire and Cowl Wire (Right Kick Panel)
: GROUND POINTS
CodeSee PageGround Points Location
EE50 (2AZ-FE)Intake Side of Cylinder Block
EF50 (2AZ-FE)Left Side of Cylinder Block
EH50 (2AZ-FE)Under the Left Headlight
IB52Right Instrument Panel Brace
: SPLICE POINTS
CodeSee PageWire Harness with Splice PointsCodeSee PageWire Harness with Splice Points
E950 (2AZ-FE)Engine WireI754Cowl Wire
I654Engine Wire

2005 HIGHLANDER (EWD592U)
11 7
MEMO

'05 HIGHLANDER_U (L/O 0409)
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2005 HIGHLANDER from Nov. '04 Prod. (OM48570U)
OPERATION OF INSTRUMENTS AND
CONTROLS
Air conditioning system
Front manual air conditioning system
Controls248 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Air flow selector settings251 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Operating tips251 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Front automatic air conditioning system
Controls254 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Air flow selector settings257 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Operating tips257 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Side vents260 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Rear heater system261 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Air conditioning filter262 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
For information about the front air conditioning system of a vehicle
equipped with Navigation system, please refer to the separate
Navigation System Owner's Manualº.
SECTION 1- 9

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2005 HIGHLANDER from Nov. '04 Prod. (OM48570U)
1. Air intake selector
2. A/Cº button
3. Air flow selector
4. Temperature selector
5. Fan speed selector
Front manual air conditioning systemÐ
ÐControls

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2005 HIGHLANDER from Nov. '04 Prod. (OM48570U)
Fan speed selector
Turn the knob to adjust the fan speedÐto
the right to increase, to the left to de-
crease.
Temperature selector
Turn the knob to adjust the temperatureÐ
to the right to warm, to the left to cool.
Air flow selector
Turn the knob to select the vents used for
air flow.
1. PanelÐAir flows mainly from the
instrument panel vents.
2. Bi- levelÐAir flows from both the floor
vents and the instrument panel vents.
3. FloorÐAir flows mainly from the floor
vents.
4. Floor/WindshieldÐAir flows mainly
from the floor vents and windshield
vents.
Turning the air flow selector to the
floor/windshield position turns on the
defogging function with the purpose of
clearing the front view.This position allows the air intake to
select FRESH automatically. This is to
clean up the front view more quickly.
If you want to return the setting to
RECIRCULATE mode, press the air in-
take selector button once again.
5. WindshieldÐAir flows mainly from the
windshield vents.
Turning the air flow selector to the
windshield position turns on the defog-
ging function with the purpose of clear-
ing the front view.
This position allows the air intake to
select FRESH automatically. This is to
clean up the front view more quickly.
If you want to return the setting to
RECIRCULATE mode, press the air in-
take selector button once again.
For details about air flow selector settings,
see ÐAir flow selector settingsº de-
scribed blow.

'05 HIGHLANDER_U (L/O 0409)
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2005 HIGHLANDER from Nov. '04 Prod. (OM48570U)
Air intake selector
Press the button to select the air source.
1. RecirculateÐRecirculates the air inside
the vehicle.
2. FreshÐDraws outside air into the sys-
tem.
To prevent fogging up of the windshield,
the air intake mode may change automati-
cally to FRESH depending on the condi-
tion of the air conditioning system.A/Cº button
To turn on the air conditioning, press the
A/Cº button. The A/Cº button indicator
will come on. To turn the air conditioning
off, press the button again.
If the A/Cº button indicator flashes, there
is a problem in the air conditioning system
and the air conditioning automatically
shuts off. If this happens, take your ve-
hicle to a Toyota dealer for service.

'05 HIGHLANDER_U (L/O 0409)
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2005 HIGHLANDER from Nov. '04 Prod. (OM48570U)

To cool off your Toyota after it has
been parked in the hot sun, drive with
the windows open for a few minutes.
This vents the hot air, allowing the air
conditioning to cool the interior more
quickly.

Make sure the air intake grilles in front
of the windshield are not blocked (by
leaves or snow, for example).

On humid days, do not blow cold air
on the windshield. The windshield could
fog up because of the difference in air
temperature on the inside and outside
of the windshield.

Keep the area under the front seats
clear to allow air to circulate through-
out the vehicle.

On cold days, set the fan speed to
high for a minute to help clear the
intake ducts of snow or moisture. This
can reduce the amount of fogging on
the windows.

When driving on dusty roads, close all
windows. If dust thrown up by the ve-
hicle is still drawn into the vehicle after
closing the windows, it is recommended
that the air intake selector be set to
FRESH and the fan speed selector to
any setting except OFFº.
ÐAir flow selector settingsÐOperating tips

'05 HIGHLANDER_U (L/O 0409)
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2005 HIGHLANDER from Nov. '04 Prod. (OM48570U)

If following another vehicle on a dusty
road, or driving in windy and dusty
conditions, it is recommended that the
air intake selector be temporarily set to
RECIRCULATE, which will close off the
outside passage and prevent outside
air and dust from entering the vehicle
interior.Heating
For best results, set controls to:
Fan speedÐAny setting except OFFº
TemperatureÐTo w a r d s WARM
(red zone)
Air intakeÐFRESH (outside air)
Air flowÐFLOOR
Air conditioningÐOFF

For quick heating, select recirculated
air for a few minutes. To keep the
windows from fogging, select fresh af-
ter the vehicle interior has been
warmed.

Press the A/Cº button on for dehumidi-
fied heating.

Choose floor/windshield air flow to heat
the vehicle interior while defrosting or
defogging the windshield.
Air conditioning
For best results, set controls to:
Fan speedÐAny setting except OFFº
TemperatureÐTo w a r d s COLD
(blue zone)
Air intakeÐFRESH (outside air)
Air flowÐPANEL
Air conditioningÐON

For quick cooling, turn the temperature
selector knob fully towards COLD and
change the air intake selector mode to
RECIRCULATE.