radio controls TOYOTA HIGHLANDER 2001 Service Repair Manual

'05 HIGHLANDER_U (L/O 0409)
170
2005 HIGHLANDER from Nov. '04 Prod. (OM48570U)
Type 1: AM´FM radio/cassette player/com-
pact disc player (with compact disc
changer controller)
Type 2: AM´FM radio/cassette player/com-
pact disc player with changer
This section describes some of the basic
features on Toyota audio systems. Some
information may not pertain to your sys-
tem.
Your audio system works when the ignition
key is in the ACCº or ONº position.
TURNING THE SYSTEM ON AND OFF
Push PWR´VOLº to turn the audio system
on and off.
Push AMº, FMº, TAPEº, DISCº or
LOADº to turn on that function without
pushing PWR´VOLº. To turn on the cas-
sette or compact disc player, a cassette
or compact disc must be loaded in the
player.
You can turn on each player by inserting
a cassette tape or compact disc.
You can turn off each player by ejecting
the cassette tape or compact disc. If the
audio system was previously off, then the
entire audio system will be turned off
when you eject the cassette tape or com-
pact disc. If the other function was pre-
viously playing, it will come on again.
SWITCHING BETWEEN FUNCTIONS
Push AMº, FMº, TAPEº, DISCº or
LOADº if the system is already on but
you want to switch from one function to
another.TONE AND BALANCE
For details about your system's tone and
balance controls, see the description of
your own system.
Tone
How good an audio program sounds to
you is largely determined by the mix of
the treble, midrange and bass levels. In
fact, different kinds of music and vocal
programs usually sound better with differ-
ent mixes of treble, midrange and bass.
Balance
A good balance of the left and right stereo
channels and of the front and rear sound
levels is also important.
Keep in mind that if you are listening to
a stereo recording or broadcast, changing
the right/left balance will increase the vol-
ume of one group of sounds while de-
creasing the volume of another.
ReferenceUsing your audio systemÐ
ÐSome basics

'05 HIGHLANDER_U (L/O 0409)
202
2005 HIGHLANDER from Nov. '04 Prod. (OM48570U)
When you select a mode, the screen indi-
cates which is selected.
Radio
AM mode:
When you select the AM mode, AMº will
appear on the screen.
FM mode:
When you select the FM mode, FM1º or
FM2º will appear on the screen.
Tape mode
TAPEº appears on the screen while this
mode is selected.
Compact disc mode
CDº appears on the screen while this
mode is selected.
The screen shows the track, or track and
disc number currently being played.
Controller
DVD player unit
OPERATING FRONT AUDIO SYSTEM
To operate the front audio system, use
the following switches.
1. DISC/CH/PROGº button
Radio
You can scan only the preset stations for
the band of the front audio system. (For
instructions, see ÐControls and featuresº
on page 173 in this Section.)
To scan the preset stations:
Push the 
º or º side of the DISC/
CH/PROGº button. The radio will tune in
the next preset station up or down the
band. The station frequency will appear on
the screen.

I34950
Multi-display Controller
Sub-Assy
Radio Receiver Assy
MUTE6
P20
IP1V12
R29 LMUT R22
(*1) (*1)
*1: w/ Rear Seat Entertainment System 05-1654
- DIAGNOSTICSAUDIO SYSTEM
1844 Author
: Date
:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
MUTE SIGNAL CIRCUIT (FROM MULTI-DISPLA Y CONTROLLER
SUB-ASSY)
CIRCUIT DESCRIPTION
The radio receiver assy controls the volume according to the LMUT signal from the multi-display controller
sub-assy .
The LMUT signal is send to reduce noise and pop sound when switching mode, etc.
WIRING DIAGRAM
05IRP-03

I34950
Radio Receiver AssyMulti-display Controller
Sub-assy
RMUT R2928
IP13
R2319
OL
RMU 05-1720
- DIAGNOSTICSREAR SEAT ENTERTAINMENT SYSTEM
1910 Author
: Date
:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
MUTE SIGNAL CIRCUIT (FROM RADIO RECEIVER ASSY)
CIRCUIT DESCRIPTION
The Multi-display controller sub-assy controls the volume according to the RMUT signal from the radio re-
ceiver assy.
The RMUT signal is sent to reduce noise and a popping sound when modes, etc. are switched.
WIRING DIAGRAM
05CF2-03