2001 TOYOTA HIGHLANDER low beam

E74077
Engine Room R/B No.3
Body ECU
Engine Room R/B
H4
Headlamp RH (Low Beam)
H3
Headlamp RH (High Beam)H2
Headlamp LH (Low Beam)
H1
Headlamp LH (High Beam)Engine Room R/B No.3
DRL No.4 Relay
Engine Room J/B
H-LP RH UPR H-LP LH UPR
HEAD LAMP RelayDRL No.3 Relay DRL No.2 Relay
HRLY
DRL
MAIN
FL MAIN Battery R-B R-B
R-B
L-W
L-W
L-Y
R-W
R-WW-BL-R
R-Y
R-W
W-B
W-B
W-B
R-W
W-B
J1
J/C J3
J/C
W
13WEB EA EG F7
FL BlockA A16
IK3B2
B11
1
2I1
2BP
1 2 2
3 1
4 5
2F
4
2G2
2F 1
2R32
15 3
3
3 3 1
212
R-L31
2 12 222
12 IK34
R
B113
H-LP RH LWR H-LP LH LWR B
B
B 3
3
3
3
31
3
2
1
53
3
3
3
3 2
5
1
2
3
4 DRL 05-1564
- DIAGNOSTICSLIGHTING SYSTEM
1754 Author
: Date
:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
WIRING DIAGRAM

05ETG-02
05-1536
- DIAGNOSTICSLIGHTING SYSTEM
1726 Author
: Date
:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
OPERATION CHECK
1. ILLUMINATED ENTRY SYSTEM OPERATION CHECK
(a) Illuminated entry system controls the following lamps:

Ignition key cylinder lamp

Interior lamp (Room lamp assy No.1)

Personal lamp (Overhead J/B)
(b) Check that the lamps come on after:
(1) Unlocking any door that was closed and locked with the ignition switch off.
(c) Check that the lamps fade out after:
(1) Leaving the doors unlocked for 15 seconds
(2) Turning the ignition switch to the ACC or ON position
(3) Locking all the doors
(d) Check that the lamps stay ON for at least 15 seconds after opening any of the doors, then fade out
again after 15 seconds.
(e) Check that the lamps fade out after:
(1) Leaving the doors unlocked for 15 seconds
(2) Locking all the doors
(f) Check that the lamps stay ON for at least 15 seconds after opening any of the doors, then fade out
again in 15 seconds after closing all the doors.
(g) Check that the lamps come on when opening any of the doors or turning the ignition switch off from
the ACC or ON position.
2. LIGHT AUTO TURN OFF OPERATION CHECK
(a) Turn the ignition switch to the ON position, and switch the headlamps into the TAIL or HEAD position.
(b) Turn the ignition switch off and open the driver's door, and check that the headlamps go off immediate-
ly.
(c) Turn the ignition switch to the ON position, and switch the headlamps into the AUTO position.
(d) Turn the ignition switch off and open the driver's door when operating the automatic light control sys-
tem, and check that the headlamps go off immediately.
3. AUTOMATIC LIGHT CONTROL OPERATION CHECK
HINT:
Perform the operation check at a location with bright surroundings.
(a) Turn the ignition switch to the ON position.
(b) Turn the headlamp dimmer switch to the AUTO position.
(c) Cover the automatic light control sensor and check that the taillamp and headlamp in order.
(d) Uncover the automatic light control sensor and check that the headlamp and taillamp go off in order.
4. DAYTIME RUNNING LIGHT OPERATION CHECK
(a) Check that the high beams come on when the headlamp switch is off with the engine running and park-
ing brake released.
(b) Check that the high beams go off when turning the headlamp dimmer switch into the TAIL or HEAD
(LOW) position under the condition as shown in (a).
(c) Check that the high beams go off when turning the ignition switch off under the condition as shown
in (a).

BE2820
Multipath
BE2821
Fade Out 05-1612
- DIAGNOSTICSAUDIO SYSTEM
1802 Author
: Date
:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
(b) Multipath
Interference caused by reflection of radio waves against
obstructions is called ºMultipathº. Multipath occurs when
radio signals emitted from the broadcast transmitter an-
tenna are reflected against tall buildings or mountains
and interferes with other signals which are to be received
directly.
(c) Fade Out
FM radio wave tends to be reflected against obstructions
such as tall buildings or mountains because FM frequen-
cy is higher than that of AM. For this reason, FM signals
often seem to gradually disappear or fade away as the ve-
hicle goes behind those obstructions. This phenomenon
is called ºfade outº.
4. NOISE PROBLEMS
(a) It is very important for technicians to understand a customer's claim about noise clearly. Use the follow-
ing table to diagnose the phenomena.
Radio waveCondition in which noise occursProbable cause
Noise occurs at a specific place.Strong possibility of foreign noise.
AMNoise occurs when listening to faint broadcasting.The same program may be broadcasted from some local sta-
tions. If the program is the same, one of those may be tuned
in.
Noise occurs only at night.Strong possibility of beat from a distant broadcasting.
FMNoise occurs at a specific place during driving.Strong possibility of multipath noise and phasing noise caused
by changes of FM frequency.
HINT:
If the condition when the noise occurs does not meet any of the above, find out the cause based on ºRecep-
tion Problemsº. Refer to the description about Multipath and Phasing mentioned previously.
5. COMPACT DISC PLAYER
(a) Compact Disc (hereafter called ºCDº) Players use a laser beam pick-up to read the digital signals re-
corded on the CD and reproduce analog signals of the music, etc. 4.7 in. (12 cm) and 3.2 in. (8 cm)
discs are available for the CD player.
HINT:
Never disassemble or apply oil to any part of the player unit. Do not insert any object other than a disc, into
the CD player.
NOTICE:
CD players use an invisible laser beam which could cause hazardous radiation exposure. Be sure
to operate the player correctly as instructed.

2005 HIGHLANDER (EWD592U)
314
I GROUND POINT
Brake Warning SW
Skid Control
ECU with
ActuatorFront Fog Light LH
Washer Level
Sensor
Front Turn Signal
Light RH
Headlight RH
(
Low Beam)
Headlight LH
(
Low Beam)
STARTER Relay
Pressur e SW
INVERTER Relay Engine Hood
Cour tesy SW
Front Turn Signal
Light LH
Headlight LH
(
Low Beam)
Front Fog Light
RHA
A W- B
W- BA
A
A
A
AW- B
W- B
W- B
W- B
W- B
EA EB
J 4
J 3
DRL NO. 3 RelayW- B
W- B(
*1)
(
*1)E12 3
3
W- B DRL NO. 4 RelayW- B
(
*1)
(
*1) 3
3
W- B
(
*1)
A
A
A
A
EHW- B W- B W- B W- B A
A
A
A
EG W- B
W- B
W- B
(
*1)
W- BJ 1 (
GND1)
J 2Front Parking
Light RH AW-B
Fro nt Parking
Light LHA W- BEFI Relay W- BRR DEF Relay W- BA/F Relay W- B
2
2A
2F7
4
A Water Temp. SW No. 1A W- B
W- B
A AW-B2G2FAN NO. 2 Relay W- B
W- B
(
GND2) W- B Skid Control
ECU with
Actuator
Radi ator Fan MotorW- BE11
W- B
(
*1)
2
2
2Front Parking Light
RH
Junction
ConnectorJunction
Connector
Junction
Connector Junction
Connector
Fro nt Parking
Light LH

010QK-02
D25523
Rubber Attachment
- INTRODUCTIONREPAIR INSTRUCTION
01-21
21 Author
: Date
:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
VEHICLE LIFT AND SUPPORT LOCATIONS
1. NOTICE ABOUT VEHICLE CONDITION WHEN JACKING UP THE VEHICLE
(a) The vehicle must be unloaded before jacking up the vehicle. Never jack up/lift up a heavily loaded ve-
hicle.
(b) When removing heavy equipment such as the engine and transmission, the center of gravity of the
vehicle may shift. To stabilize the vehicle: place a balance weight in a location where it will not roll or
shift; or use a mission jack to hold the jacking support.
2. NOTICE FOR USING 4 POST LIFTS
(a) Follow the safety procedures outlined in its instruction manual.
(b) Use precautionary measures to prevent the free wheel beam from damaging tires or wheels.
(c) Use wheel chocks to secure the vehicle.
3. NOTICE FOR USING JACK AND SAFETY STAND
(a) Work in a flat area using wheel chocks at all times.
(b) Use a safety stand with a rubber attachment, as shown
in the illustration.
(c) Apply the jack and rigid rack to the specified location on
the vehicle.
(d) When jacking up the front wheels, release the parking
brake and place wheel chocks only behind the rear
wheels. When jacking up the rear wheels, place wheel
chocks only in front of the front wheels.
(e) The jack should not be used without the rigid rack.
(f) When jacking up only the front wheels or only the rear wheels, place wheel chocks on both sides of
the wheels touching the ground.
(g) When lowering the vehicle with its front wheels jacked up, release the parking brake and place wheel
chocks only in front of the rear wheels. When lowering a vehicle with its rear wheels jacked up, place
wheel chocks only behind the front wheels.

2005 HIGHLANDER (EWD592U)
M
1
234
5 HIGHLANDER
Power Source Headlight (
w/ Daytime Running Light)
40A
MAIN2G 4
2I 13 4
2 12B 1
10A H- LP LH UPR 10A H- LP RH UPR
7. 5A
DRL
2F 22F533
1 2
2 1
3 5
4 33
3332 1
5 1
2 3 33
33
EB Right Fr ont
Fender Apron15A
H- L P
LH LWR15A
H- LP
RH LWR 2
22
1 2
1 2
EG Under the Left
He ad li g htEARight Fr ont
Fender Apron7IC3
7IF3
AA9IF34A 134F 64N2 14 B14 D 2 1
5 333
33
Dimmer SW Light
Cont rol SW
Fl a shHi ghLow HeadTa i l OFF15 B 17 B 4IK3 16IK3
3C 2C 2
1
Battery 1 3
FL MAIN
3. 0W
HEAD LAMP RelayDRL NO. 3
Relay DRL NO. 4
Relay
11
22
16 B
19 AHRLY DRL
HF HEAD PKB HUDRL NO. 2
Re l ay
R- BP B
W R
W R- W L- Y L- WR- W R- W
W- BR- L W- B
W- B W- B
W- B W- B
R- L R- WR- YBG BR
W
Y
Y
O LG R
7813
W- B W- B B R- B R- BP
L- R RB
B
B 2ACC
IG1 AM1 4
5A
IG
BR3A 10
3B 51K 101C 7GR
1A 1
40A AM1
1C 6B W G
G
2
W- B
BR- B
16
W- BIA Left Cowl Side Panel7DGND1 GND2
A 2
3B 3
13 3F 4N 1 11 4H
4L 7
IC Right
Cowl Side
PanelIBRi g ht
Ins trument
Panel
Br ac e
W- B
W- BW- B
W- B
W- B
140A
ALT7. 5A
IG1
R- YR- Y
HU HL HF T H E L 12
21
L- W
R- W
ST 1
Park ing Br ake SW
<15- 5>
F 7
H 1
J 3
J 1
H 3 H 2 H 4Beam C1 1(
A)
, C12(
B)
C13B 9(
A)
, B10(
B)
, B11(
C)
, B12(
D)
Bo dy ECU
Combinat ion Meter
Combination SW Fus ible Link Block
Headlight LH (
High Beam) Headlight LH (
Low Beam)
Headlight RH (
High Beam) Headlight RH (
Low Beam)
Junc tion
Connec tor
Junction
Connector I gnit ion SW I15

2005 HIGHLANDER (EWD592U)
M OVERALL ELECTRICAL WIRING DIAGRAM
1
234
6 HIGHLANDER
3
12B 1
4 3
1 2
2I 1
40A MAIN
2
1
10A H- LP RH UPR
2F 5
10A H- LP LH UPR
2F 22G1
15A
H- LP
LH LWR15A
H- LP
RH LWR 2
11
22 22
1 2
1 2
EARight Front
Fender Apron AA7IC3 17IC2 10IK31 2
1 2
7IF3
Dimmer SW Light
Cont rol SW
Fl a shHi ghLow HeadTa i l OFF
16 B
19 A7813
4I 1
4N 2
IF394F 6
4A 133C 4IK3
14 B17 B 15 B
Headlight (
w/o Daytime Running Light)
Power Source
IALef t Cowl Side Panel 16
W WW- B W- B R- YBG
R- Y
Bat tery FL MAIN
3. 0WR- Y
R- W L- R R
L- Y
RR- W
R- WO Y O LG
YY W
YY
W
YW- B
BRHF HE AD HRLY
HU HE AD L AMP
Re la y
HU HL HF T H E L
L- R L- YR
R- B
F 7
J 3
H 2 H 4 H 1 H 3
Be am C1 1(
A)
, C12(
B)
C1 3 B10(
B)
, B11(
C)
Body ECU
Combination Meter
Combination SW Fusible Link Bloc k
Headlight LH
(
High Beam)
Headlight LH
(
Low Beam) Headlight RH
(
High Beam)
Headlight RH
(
Low Beam)
Junction
Connector

L
CodePart Name Part NumberCodePart Name Part Number
2005 HIGHLANDER (EWD592U)
343
E 4Electronically Controlled Transmission
Pattern Select SW90980-10797
E 5Engine Control Module90980-12142
E 6Engine Control Module90980-12146
E 7Engine Control Module90980-12144
E 8Engine Control Module90980-12145
E 9Engine Control Module90980-12143
E10Electronically Controlled Transmission
Solenoid90980-1 1658
E12Evaporator Temp. Sensor90980-1 1918
F 1Front Fog Light LH90980-1 1660F 2Front Fog Light RH90980-1 1660
F3Front Parking Light LHF 3Front Turn Signal Light LH90980-1 1020
F4Front Parking Light RH90980-1 1020
F 4Front Turn Signal Light RH
F 5Front Wiper Deicer90980-1 1407
F 6Front Wiper Motor90980-1 1599
F 7Fusible Link Block-
F 8Front Power Outlet90980-10760
F10Front Door Speaker LH90980-10935F11Front Door Speaker RH90980-10935
F12Fuel Pump90980-1 1077F12Fuel Sender90980-11077
F14Front Washer Motor90980-1 1019
G 1Generator90980-1 1964
G 2Generator90980-09365
G 4Glove Box Light90980-1 1098
G 5Gateway ECU90980-1 1911
H 1Headlight LH (High Beam)90980-1 1659
H 2Headlight LH (Low Beam)90980-1 1660
H 3Headlight RH (High Beam)90980-1 1659
H 4Headlight RH (Low Beam)90980-1 1660
H 6Heated Oxygen Sensor (Bank 2 Sensor 2)90980-1 1930
H 7Horn LH90980-10619H 8Horn RH90980-10619
H 9Heater Relay82660-44010
H10Heated Oxygen Sensor (Bank 1 Sensor 2)90980-1 1929
H11High Mounted Stop Light90980-1 1148
I 2Ignition Coil and Igniter No.1
I 3Ignition Coil and Igniter No.2
I 4Ignition Coil and Igniter No.390980-1 1885I 5Ignition Coil and Igniter No.490980-1 1885
I 6Ignition Coil and Igniter No.5
I 7Ignition Coil and Igniter No.6
I8Injector No.1 (2AZ-FE)90980-1 1875I 8Injector No.1 (3MZ-FE)90980-1 1153
I9Injector No.2 (2AZ-FE)90980-1 1875I 9Injector No.2 (3MZ-FE)90980-1 1153
I10Injector No.3 (2AZ-FE)90980-1 1875I10Injector No.3 (3MZ-FE)90980-1 1153
I11Injector No.4 (2AZ-FE)90980-1 1875I11Injector No.4 (3MZ-FE)90980-1 1153
I12Injector No.590980-1 1153I13Injector No.690980-11153
I14Ignition Key Cylinder Illumination90980-1 1148
I15Ignition SW90980-1 1615
I16Interior Light90980-10908
I17Inner Mirror90980-1 1794
J 1Junction Connector
J 2Junction Connector90980-1 1194J 3Junction Connector90980-1 1194
J 4Junction Connector
J 5Junction Connector90980-1 1542
J 6Junction Connector90980-1 1915
J 7Junction Connector90980-1 1542
J10Junction Connector90980-10807J12Junction Connector90980-10807
J13Junction Connector90980-1 1915
J14Junction Connector90980-10976
J16Junction Connector90980-1 1915J17Junction Connector90980-1 1915
J18Junction Connector
J19Junction Connector90980-1 1542
J20Junction Connector
J21Junction Connector
J22Junction Connector90980-12374J23Junction Connector90980-12374
J24Junction Connector
K 1Knock Sensor (Bank 1)
K 2Knock Sensor (Bank 1)90980-1 1875
K 3Knock Sensor (Bank 2)
K4Key Interlock Solenoid90980-10795K 4Unlock Warning SW90980-10795
L 1License Plate light90980-1 1300
M 1Mass Air Flow Meter90980-1 1317
M 2Main SW90980-10957
M 3Multi-Display90980-12203
M 4Multi-Display90980-12410
M 5Multi-Display90980-12012
N 1Noise Filter (Ignition System)90980-10843
N 2Noise Filter (Rear Window Defogger)90980-10860
N 3Navigation ECU90980-1 1973