engine TOYOTA HIGHLANDER 2001 Service Repair Manual

2005 HIGHLANDER (EWD592U)
108
ECT and A/T Indicator for 3MZ-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
EC48 (3MZ-FE)Left Side of Cylinder Head
ED48 (3MZ-FE)Rear Side of Cylinder Head
EH48 (3MZ-FE)Under the Left Headlight
IB52Right Instrument Panel Brace
: SPLICE POINTS
CodeSee PageWire Harness with Splice PointsCodeSee PageWire Harness with Splice Points
E1448 (3MZ-FE)Engine WireI754Cowl Wire
I654Engine Wire

'05 HIGHLANDER_U (L/O 0409)
192
2005 HIGHLANDER from Nov. '04 Prod. (OM48570U)
NOTICE

Benzene or alkaline solutions may
damage the coated surface of the
screen
.


To prevent the battery from being
discharged, do not turn on the rear
seat entertainment system longer
than necessary when the engine is
not running.
The rear seat entertainment system can
be operated with the rear seat entertain-
ment system controller and buttons on the
DVD player unit. The system cannot be
operated by touching the switches on the
screen directly.
CAUTION
Do not disassemble or modify the
controller. It may cause an accident,
fire or electric shock.
NOTICE
Keep the controller away from direct
sunlight, high heat and high humidity.
These conditions could cause the
case to deform or the battery to ex-
plode or leak.
BEFORE USING THE CONTROLLER
(for new vehicle owners)
A battery is already set in the control-
ler with an insulating sheet, which pre-
vents the battery from being dis-
charged. Before using the controller,
remove the insulating sheet according
to the following procedure.
ÐRear seat entertainment
system controller

'05 HIGHLANDER_U (L/O 0409)
237
2005 HIGHLANDER from Nov. '04 Prod. (OM48570U)
Level 8: All types of DVD video discs can
be played.
Multi- angle feature: You can enjoy the
same scene at different angles.
Multi- language feature: You can select
the language of the subtitles and audio.
Region codes: Region codes are provided
on DVD players and DVD discs. If the
DVD video disc does not have the same
region code as the DVD player, you can-
not play the disc on the DVD player. For
region codes, see page 236.
Audio: This DVD player can play liner
PCM, Dolby digital, dts and MPEG audio
format DVD. Other decoded type cannot
be played.
Title and chapter: Video and audio pro-
grams stored on DVD video discs are di-
vided in parts by title and chapter.
Title: The largest unit of the video and
audio programs stored on DVD video
discs. Usually, one piece of a movie, one
album, or one audio program is assigned
as a title.
Chapter: A unit smaller than a title. A title
comprises plural chapters.Manufactured under license from Dolby
Laboratories. Dolbyº, Pro Logicº, and
the double- D symbol are trademarks of
Dolby Laboratories. Confidential unpub-
lished works.
1992- 1997 Dolby Laboratories. All
rights reserved.
This product incorporates copyright
protection technology that is protected
by method claims of certain U.S. pat-
ents and other intellectual property
rights owned by Macrovision Corpora-
tion and other rights owners. Use of
this copyright protection technology
must be authorized by Macrovision Cor-
poration, and is intended for home and
other limited viewing uses only unless
otherwise authorized by Macrovision
Corporation. Reverse engineering or
disassembly is prohibited.
dtsº is a trademark of Digital Theater
Systems, Inc.The rear entertainment system plays vid-
eos and sound when your audio system
is connected to the input terminal adapter.
For details, refer to the manufacturer 's
instructions.
ÐInput terminal adapter

'05 HIGHLANDER_U (L/O 0409)
239
2005 HIGHLANDER from Nov. '04 Prod. (OM48570U)
NOTICE

To prevent the battery from being
discharged, do not use the power
outlet longer than necessary when
the engine is not running.

Close the power outlet lid when the
power outlet is not in use. Inserting
anything other than an appropriate
plug that fits the outlet may cause
electrical failure or short circuit.
The power outlet is not designed for
the following electric appliances even if
their power consumption is under 115
VAC/100W. These appliances may not
operate properly.
Appliances with high initial peak watt-
age: cathode- ray tube type televisions,
compressor- driven refrigerators, electric
pumps, electric tools, etc.
Measuring devices which process pre-
cise data: medical equipment, measur-
ing instruments, etc.
Other appliances requiring an extremely
stable power supply: microcomputer-
controlled electric blankets, touch sen-
sor lamps, etc.
Certain electrical appliances may cause
radio noise.
You can enjoy the rear seat entertain-
ment system with commercial head-
phones.
To use the headphones, connect them to
the jack.
The key must be in the ACCº or ONº
position.
ÐHeadphone input jacks

2005 HIGHLANDER (EWD592U)
11 0
ECT and A/T Indicator for 2AZ-FE
1 9 4 3 7 2 8
G- YW P- L
+B BATT20A
EF1 NO. 1
B- W W- B
L
Y- R
B- Y
Y- G
L- Y
L- R
23 15
2B 4 2F 4 2B 52B7
Y
R W
IK2 10 IK21110A
IGN
1G 620A
STOP
1E 1
4E 1
B BRP
I 74M 4
EH1 2
4M 124L 3
1A A3A9B1921G7. 5A
IG1
A 8
BRW
D 11 D13 D9D15 D32 D 12 D14R
E10SL1- SL1+
18 D 19 D
B- WR- B
510 IGSW STP
A
J 2MREL S4 SLT+ SLT- DSL SL2+ SL2-
W- B
THO
S15
EFI
Relay
IK3 13
B
B
E2 IM1 10
R
E
E
R
O
G
G
Y
BR
O
+B2 2A
WW
P
W
B
O BR
BR 6 THO SL1- SL1+ SL2- SL2+ DSL SLT- SLT+ S4
J 6
From Power Source System (
See Page 62)
E 5(
A)
, E 6(
B)
, E 7(
E)
, E 8(
D)
, E 9(
C)
Engine Control Module
Electronically Controlled Transmission Solenoid
Junction
Connector
Junction
Connector
Stop Light SW

2005 HIGHLANDER (EWD592U)
111
20 IM1
BR BR
W- B
W- B W- B W- B
BR G- BY BR
L- W
P
Y- GG Y- R R- BL- Y
9
J 6
IM1
EF EE6E 7E PL RL NL DL 2L LL
61 97382
7E 1C D 7
W- B
J 7
8B B 9 B 10 7A B 11 A 6
A
A R
BR
B- R
VC
35
VTA2 R
1 2
E 9 E 28 E18 E19
VTA1
BRE 2
4 64AP 1
54K
PR ND2 L
E2 VC THW E04 E1E03 E01 E02 C
C B
B7IM1 18 IM1 8IM1 19 IM1
J 6
Y GRL VV
L
GR
E 31VTA2
R- W
6E 21VTA1NC- NC+ NT- NT+
W- GY R- WWT 3
C 6
D 261
2
D 34 35 D 2 1
27 D
BR
A 5B 5
E2
W- BW- B W- B
BR
R
RB
W- B
4CME01
I 6
W
M- 1C 2M-
B
M+ 2C 3M+
C 17GE0 1
(
Shielded)
E 5(
A)
, E 6(
B)
, E 7(
E)
, E 8(
D)
, E 9(
C)
S28(
A)
, S29(
B)
Counter Gear Speed
Sensor Engine Coolant Temp.
Sensor
Engine Control Module
Junction
Connector
Junction
Connector
Junction
Connector
A/T Indicator SW
Shor t Connector
Turbine Speed Sensor
Throttle Control Motor T13
Throttle Position Sensor

2005 HIGHLANDER (EWD592U)
11 2
ECT and A/T Indicator for 2AZ-FE
BMPX-
A
MPX1
W
2IF3R
SNOW MPX1
A 16
10
GR
ODMS9
MPX2
L
GR W- B
W- BW- B
MPX2
V GR Y
E 4
29 BBR
6
IB 13 3F6
83H3
4 A17
2B A IB2 8
IB2 1
IF3 5
15
O
7
8 MPX1
MPX2
A
P 5
MPX+
W
18 B
2B
Y
SPD
17 B
IL2 9
Y
83D2 B 1
A 1A2
BR
24
MPX1
BR
22
MPX2
G V
4
11MPD1
MPD2
G 5
IL2 12
SB
74F 54AG
Y IL2 1
SB
(
*1) (
*1)
G
(
*2)
G
Y
T16
* 1 : w/ Navigation System
* 2 : w/o Navigation SystemSB
W- B
S30(
A)
, S31(
B)
B 9(
A)
, B10(
B)
E 5(
A)
, E 6(
B)
, E 7(
E)
, E 8(
D)
, E 9(
C)
A10(
A)
, A11(
B)
A/C Control Assembly Air bag Sensor Assembly
Body ECU
Electronically Controlled
Transmission Pattern Select SW
Engine Contr ol Module
Gateway ECU Power Window Master SW
with ECUShort Connector Transmission
Control SW

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)
11 6
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

'05 HIGHLANDER_U (L/O 0409)
256
2005 HIGHLANDER from Nov. '04 Prod. (OM48570U)
When the A/Cº button is not pressed in,
pressing another air flow button turns off
the air conditioning.
For details about air flow selector settings,
see ÐAir flow selector settingsº de-
scribed below.
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.
If the engine coolant temperature becomes
extremely high, RECIRCULATE mode will
automatically be selected. This is not a
malfunction. When the engine coolant tem-
perature is lowered, the previous mode
will resume.
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.