radio antenna TOYOTA HIGHLANDER 2001 Service Repair Manual

'05 HIGHLANDER_U (L/O 0409)
171
2005 HIGHLANDER from Nov. '04 Prod. (OM48570U)
YOUR RADIO ANTENNA
Your vehicle has the mast type antenna or
on- glass antenna printed on the inside of
the rear quarter window.
Mast type antennaÐTo remove an anten-
na, carefully turn it counterclockwise.
NOTICE

Mast type antenna:
To prevent damage to the antenna,
make sure it is removed before
driving your Toyota through an au-
tomatic car wash.

On- glass antenna:
Attaching the film (especially con-
ductive or metallic type) on the rear
glass will noticeably reduce the
sensitivity of the radio.
YOUR CASSETTE PLAYER
When you insert a cassette, the exposed
tape should face to the right.
NOTICE
Do not oil any part of the player and
do not insert anything other than cas-
sette tapes into the slot, or the tape
player may be damaged.
YOUR COMPACT DISC PLAYER (type 1)
When you insert a disc, gently push it in
with the label side up. The player will play
from track 1 through to the end of the
disc. Then it will play from track 1 again.
NOTICE
Never try to disassemble or oil any
part of the compact disc player. Do
not insert anything other than com-
pact discs into the slot.
8 cm (3 in.) compact disc singles
Your compact disc player does not need
an adaptor to play compact disc singles.
Compact disc singles are about 8 cm (3
in.) in diameter- smaller than standard
discs.
After you eject a compact disc single, do
not insert a standard 12 cm (4.7 in.) disc
until DISCº disappears from the display.
NOTICE
Do not use an adaptor for compact
disc singles
Ðit could cause tracking
errors or interfere with the ejection of
compact discs.
YOUR COMPACT DISC PLAYER WITH
CHANGER (type 2)
When you insert a disc, push the LOADº
button and gently push the disc in with
the label side up. This compact disc play-
er can store up to six discs. The player
will play from track 1 through to the end
of the disc. Then it will play from track
1 of the next disc.
The player is intended for use with 12 cm
(4.7 in.) discs only.

'05 HIGHLANDER_U (L/O 0409)
241
2005 HIGHLANDER from Nov. '04 Prod. (OM48570U)
For example, nearby buildings and terrain
can interfere with FM reception. Power
lines or telephone wires can interfere with
AM signals. And of course, radio signals
have a limited range. The farther you are
from a station, the weaker its signal will
be. In addition, reception conditions
change constantly as your vehicle moves.
Here are some common reception prob-
lems that probably do not indicate a prob-
lem with your radio:
FM
Fading and drifting stationsÐGenerally, the
effective range of FM is about 40 km (25
miles). Once outside this range, you may
notice fading and drifting, which increase
with the distance from the radio transmit-
ter. They are often accompanied by distor-
tion.
Multi- pathÐFM signals are reflective,
making it possible for two signals to reach
your antenna at the same time. If this
happens, the signals will cancel each oth-
er out, causing a momentary flutter or
loss of reception.Static and flutteringÐThese occur when
signals are blocked by buildings, trees, or
other large objects. Increasing the bass
level may reduce static and fluttering.
Station swappingÐIf the FM signal you
are listening to is interrupted or weak-
ened, and there is another strong station
nearby on the FM band, your radio may
tune in the second station until the origi-
nal signal can be picked up again.
AM
FadingÐAM broadcasts are reflected by
the upper atmosphereÐespecially at night.
These reflected signals can interfere with
those received directly from the radio sta-
tion, causing the radio station to sound
alternately strong and weak.
Station interferenceÐWhen a reflected sig-
nal and a signal received directly from a
radio station are very nearly the same
frequency, they can interfere with each
other, making it difficult to hear the broad-
cast.
StaticÐAM is easily affected by external
sources of electrical noise, such as high
tension power lines, lightening, or electri-
cal motors. This results in static.CARING FOR YOUR CASSETTE PLAYER
AND TAPES
For the best performance for your cas-
sette player and tapes:
Clean the tape head and other parts regu-
larly.
A dirty tape head or tape path can
decrease sound quality and tangle your
cassette tapes. The easiest way to
clean them is by using a cleaning tape.
(A wet type is recommended.)
Use high- quality cassettes.
Low- quality cassette tapes can cause
many problems, including poor sound,
inconsistent playing speed, and
constant auto- reversing. They can also
get stuck or tangled in the cassette
player.
Do not use a cassette if it has been
damaged or tangled or if its label is
peeling off.
Do not leave a cassette in the player
if you are not listening to it, especially
if it is hot outside.
Store cassettes in their cases and out
of direct sunlight.

2005 HIGHLANDER (EWD592U)
272
Audio System with 8 Speaker
AUO- AUO+ AUI+ AUI- 7. 5A
RAD
NO. 2
1H 1
IO1 14
A A
A 2
ACC1K 325A
RAD
NO. 1
2CC 1C11 BACC
J18
N 3
G G
L- B
GR Y
V
L- Y
V B
G
LG
R
IK3 20
L- B
11 2 1 10
* 1 : w/ Rear Seat Entertainment System
* 2 : w/ Navigation System AG
(
*1)1 ANT+
13 C
B
A21O
G
(
*1)
* 3 : w/o Navigation System12 IN1 7IN16 IL1 1IL110 B 1B8
G
B Y
R LG
L
F11 FR+ FR-
12
Y
B
T12
34IR1 1IR111
LG
L
12 IB1 7IB16 IF3 10 IF320 B 2B9
G
B P
G P
V
F10 FL+ FL-
12
R
W
T11
34IR1 10 IR120
Y
R- Y
(
*2)
(
*2)
(
*2)
(
*2)(
*3) (
*3)
4E 2
4D 8 4E 3
IA1 6
1
V
W V
4
IL1 2
LG
3K 10
3C 43C5
IR2 1
R- Y R- Y A26
3I 9
3A 13
B 7
+B From Power Source System (
See Page 62)
S22(
A)
, S23(
B)R 4(
C)
, R22(
A)
, R23(
B)
Antenna Amplifier
(
Front) Antenna Amplifier
(
Rear)
Front Door Speaker LHFront Door Speaker RH
Junction
Connector
Navigation ECURadio and Player
Stereo Power Amplifier
Twee ter
LHTweeter
RH

2005 HIGHLANDER (EWD592U)
280
Audio System with 6 Speaker
7. 5A
RAD
NO. 2
1K 325A
RAD
NO. 1
2C 4
3A 13
3I 9
B 3B4IL1 2IK3 20
IBB 7
12 IB1 7IB16 IF3 10 IF320 B 2B6
P
V BR
P
G P
V
F1012 IN1 7IN16 IL1 1IL110 B 1B5
LG
L Y
R LG
L
F1112 BB1 5 BB110 IR1 10 IR120 A 2A6
B
Y R
W
R 912 BC1 5BC110 IR1 1IR111 A 1A3
R
W LG
L R
W
R10
V
L- Y GR
LG L- B
BH1 1BH110
Y
R- Y L
Y
ACC+B BU+B
GND FL+ FL- FR+ FR- RL+ RL- RR+ RR-
12 12
R
W
Y
B
T11 T12
34 34 1H 1
4E 34E 2
IA1 6
Y V V
1
A26From Power Source System (
See Page 62)
R 2(
A)
, R 3(
B)
Antenna Amplifier
(
Rear)
Front Door Speaker LH Front Door Speaker RHRadio and Player
Rear Door Speaker
LHRear Door Speaker
RH
Tweeter
LHTweeter
RH

05-1674
- DIAGNOSTICSAUDIO SYSTEM
1864 Author
: Date
:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
NOISE OCCURS
INSPECTION PROCEDURE
1 CHECK OF SPEAKER INSTALLATION
(a) Check the speaker installation condition.
(1) Check that each speaker is securely installed.
OK: Malfunction disappears.
HINT:
The radio is equipped with a noise prevention system that blocks only excessively loud noise. If loud noise
occurs, check whether or not the ground on the antenna installation part and the proper noise-prevention
equipment are all installed, and whether or not there is improper wiring.
Condition in which noise occursNoise type
Depressing the acceleration pedal increases the noise, and stopping the
engine stops the noise immediately.Alternator noise
Noise occurs during A/C or the heater operation.Blower motor noise
Rapid acceleration during the drive on an unpaved road or after the ignition
switch is turned on makes noise.Fuel pump noise
Pressing and then releasing the horn switch, and keeping pressing the horn
switch makes noise.Horn noise
Quiet noise is heard while the engine is running, but stops with the engine.Ignition noise
Noise occurs in turn with the blink of the turn signal flash.Flasher noise
Noise occurs during window washer operation.Washer noise
Noise occurs while the engine is running, and it continues even after the en-
gine is stopped.Water temperature sensor noise
Noise occurs during wiper operation.Wiper noise
Noise occurs when the brake pedal is depressed.Stop light switch noise
OthersStatic electricity on the vehicle
HINT:

Identify the condition in which the noise occurs, and check the noise filter on the related part.

Make sure first that there is no noise from outside. Failing to do so makes the noise occurrence source
detection difficult and leads to misdiagnosis.

The noise should be removed in descending order of loudness.
NG INSTALL IT PROPERLY
OK
IDENTIFICATION OF NOISE SOURCE
055M1-10

- DIAGNOSTICSAUDIO SYSTEM
05-1675
1865 Author
: Date
:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
RADIO BROADCAST CANNOT BE RECEIVED(BAD RECEPTION)
INSPECTION PROCEDURE
1 CHECK IF RADIO AUTO-SEARCH FUNCTIONS PROPERLY
(a) Check if the radio auto-search functions properly.
(1) Perform the auto-search of the radio and check that it functions normally.
OK: The radio auto-search functions properly.
OK REPLACE RADIO RECEIVER ASSY
(SEE PAGE 67-6)
NG
2 CHECK OPTIONAL COMPONENT
(a) Check optional component (sun shade film, telephone antenna etc.).
(1) Check whether or not any optional component such as the sun shade film and the telephone
antenna is installed.
OK: Optional component is installed.
OK EFFECT FROM OPTIONAL COMPONENT
NG
05IRT-01

E50367
05-1676
- DIAGNOSTICSAUDIO SYSTEM
1866 Author
: Date
:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
3 INSPECT RADIO RECEIVER ASSY(ANTENNA)
(a) Preparation for Check
(1) Remove the antenna plug of the radio receiver as-
sembly.
(b) Noise Check
(1) With the radio receiver assy connector connected,
turn the ignition switch to the ACC position.
(2) Turn on the radio and choose the AM mode.
(3) Place a flat-head screwdriver or a piece of metal
such as thin wire on an antenna jack of the radio re-
ceiver assy and check that the noise is heard from
the speaker.
OK: Noise occurs.
NG REPLACE RADIO RECEIVER ASSY
(SEE PAGE 67-6)
OK
4 CHECK ANTENNA TYPE
(a) Choose type to be inspected.
TypeGo to step
Glass printed type antennaA
Fender type antennaB
B Go to step 7
A

BE4029
Tester Probe
Antenna WireTin Foil
E32576
- DIAGNOSTICSAUDIO SYSTEM
05-1677
1867 Author
: Date
:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
5 CHECK ANTENNA ASSY
(a) Check for continuity of the antenna.
HINT:
Inspect the continuity, at the center of each antenna wire, as
shown in the illustration.
NOTICE:
When cleaning the glass, use a soft dry cloth, and wipe the
glass in the direction of the wire. Take care not to damage
the wires. Do not use detergents or glass cleaners with
abrasive ingredients. When measuring voltage, wind a
piece of tin foil around the top of the negative probe and
press the foil against the wire with your finger, as shown in
the illustration.
OK: There is continuity in the antenna.
NG REPAIR ANTENNA ASSY (SEE PAGE 67-33)
OK
6 REPLACE AMPLIFIER ANTENNA ASSY (SEE PAGE 67-15 OR 67-16)
(a) Replace the amplifier antenna assy and check if it operates normally.
OK: The amplifier antenna assy operates normally.
OK NORMAL OPERATION
NG
REPLACE RADIO RECEIVER ASSY (SEE PAGE 67-6)
7 CHECK ANTENNA ASSY
(a) Check that the antenna is securely installed.
OK: The antenna is installed properly.
OK Go to step 6
NG
INSTALL THE ANTENNA ASSY PROPERLY

05IRH-01
30 kHz 300 kHz 3 MHz 30 MHz 300 MHz
LF MF HF VHF
AM FM
Frequency modulation Frequency
Designation
Radio wave
Modulation Amplitude modulation
BE2818
FM (Stereo)
FM (Monaural)
AM
BE2819
PhasingIonosphere
- DIAGNOSTICSAUDIO SYSTEM
05-161 1
1801 Author
: Date
:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
AUDIO SYSTEM
DESCRIPTION
1. RADIO WAVE BAND
The radio wave bands used in radio broadcasting are as follows:
LF: Low Frequency
MF: Medium Frequency
HF: High Frequency
VHF: Very High Frequency
2. SERVICE AREA
(a) There is a great difference in the size of the service areas
for AM and FM broadcasting. Sometimes an FM stereo
broadcast cannot be received even though AM can be re-
ceived very clearly.
FM stereo has the smaller service area, it also picks up
static and other types of interference (ºnoiseº) easily.
3. RECEPTION PROBLEMS
HINT:
Besides the problem of static, there are other problems, such as ºphasingº, ºmultipathº and ºfade outº. These
problems are caused not by electrical noise but by the nature of the radio waves themselves.
(a) Phasing
Besides electrical interference, AM broadcasts are also
susceptible to other types of interference, especially at
night. This is because AM radio waves bounce off the ion-
osphere at night. These radio waves then interfere with
the signals that reach the vehicle's antenna directly from
the same transmitter. This type of interference is called
ºphasingº.

2005 HIGHLANDER (EWD592U)
8
B HOW TO USE THIS MANUAL
The ground points circuit diagram shows the connections from all major parts to the respective ground points. When
troubleshooting a faulty ground point, checking the system circuits which use a common ground may help you identify
the problem ground quickly. The relationship between ground points (
EA, IB and IC shown below) can also be
checked this way.
5
5
5
5
4
44
4
4 BA15IB18EA2
ID115
IC33 IA12 E 3
W-BW-B W-B W-B W-B
W-B
W-B
W-B
W-B W-B
W-B
W-B W-B
W-B
W-B W-B W-BW-B W-B W-B W-B
W-B
W-B
W-B
W-B W-B W-B
W-B
BR
W-B
BR BRW-BW-B W-B
W-B
W-B
W-B
W-B W-B W-B
W-B
W-B W-B
W-B
W-B
BR W-B
BR BR
BR W-B (4A-GZE)
W-B W-BI 2
I 2
B 5 I 5 I 5 I 5
B 5
B 5
B 5
I 5
I 5
I 3 I 3 E 3
E 3
E 3
E 2
E 4
E 5
E 4
E 5
E 6 E 4 E 4
B 4
EA I 4
B 4
B 4
I 4 I 8
IB IC 443E5
3E6 3G13 3F3 3D1 3B7W-B
W-B
W-B W-B W-B
W-B
W-B
W-B
W-B
W-B
W-B
W-B
W-B
W-B W-BI 6
I 6
I 2 3C7
10A A A A
A
A
Junction
Connector J 1
W-B
W-B
W-B W-B
BR W-B W-B
W-B
W-B W-B
W-B
I GROUND POINT
FAN MAIN Relay
FAN MAIN Relay
A/C Relay No.2
A/C Relay No.3
Radiator Fan Motor
Headlight Cleaner Relay
Headlight LH
Headlight RH
Front Fog Light LH
Brake Fluid Level SW Front Fog Light RH Front Turn Signal Light RH
Front Clearance Light RH
Front Turn Signal Light LH
Front Clearance Light LH
Door Lock Control SW
Door Courtesy SW RH
Door Lock Motor RH
Door Lock Control Relay
Blower Resistor
Idle-Up SW
A/C Amplifier
Radio and Player
HEATER Relay
Auto Antenna MotorA/C Control Assembly
Blower Motor
Blower SW
Parking Brake SW
Combination Meter
Combination SW
Cruise Control ECU
Remote Control Mirror SW
Turn Signal Flasher
Defogger SW
Unlock Warning SW
Power Window Master SW
Power Window Control
Relay
Door Courtesy SW LH
Door Lock Control SW
Door Lock Motor LH
Fuel Control SW
Woofer Speaker Amplifier
Combination Meter
Combination Meter
Fuel Sender Cigarette Lighter
O/D Main SW
Clock
Combination SW
*The system shown here is an EXAMPLE ONLY. It is different to the actual circuit shown in the SYSTEM CIRCUITS SECTION.