2005 TOYOTA AVENSIS radio antenna

022KX±01
± PREPARATIONAUDIO & VISUAL SYSTEM
02±55
AVENSIS REPAIR MANUAL (RM1018E)
AUDIO & VISUAL SYSTEM
PREPARATION
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ANTENNA CORD SUB±ASSY
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NAVIGATION ANTENNA ASSY
ANTENNA CORD SUB±ASSY NO.3
AMPLIFIER ANTENNA
ASSY(LIFTBACK MODELS)
AMPLIFIER ANTENNA ASSY(SEDAN
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ASSY(WAGON MODELS)
Equipment
Torque wrench

0549F±10
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
FadingIonosphere
± DIAGNOSTICSAUDIO SYSTEM
05±1393
AVENSIS REPAIR MANUAL (RM1018E)
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
There are great differences in the size of the service area for AM
and FM broadcasting. Sometimes FM stereo broadcast cannot
be received even through AM can be received very clearly.
FM stereo has the smaller service area, but it also picks up stat-
ic and other types of interference (ºnoiseº) easily.
3. RECEPTION PROBLEMS
HINT:
Besides the problem of static, there are some move problems called ºfadingº, ºmultipathº and ºfade outº.
These problems are caused not by electrical noise but by the nature of the radio waves themselves.
(a) Fading
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
ºfadingº.

05±1420
± DIAGNOSTICSAUDIO SYSTEM
AVENSIS REPAIR MANUAL (RM1018E)
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.
Standard: The radio auto±search functions properly.
OK REPLACE RADIO RECEIVER ASSY
NG
2 CHECK OPTIONAL COMPONENT
(a) Check optional component (Sun shade film, telephone antenna etc.).
(1) Check whether or not any optional component is installed, such as the sunshade film and the
telephone antenna.
Standard: Optional component is installed.
OK EFFECT FROM OPTIONAL COMPONENT
NG
3 CHECK ANTENNA FOR NOISE PRODUCTION
(a) Noise Check with Antenna.
(1) With the ignition switch in ACC, turn on the radio and choose the AM mode.
(2) Place a tip of a screwdriver or the antenna of the antenna assembly w/ holder and check that
the noise heard from the speaker.
Standard: Noise occurs.
OK REPLACE RADIO RECEIVER ASSY
NG
0549R±06

E50367
± DIAGNOSTICSAUDIO SYSTEM
05±1421
AVENSIS REPAIR MANUAL (RM1018E)
4 INSPECT RADIO RECEIVER ASSY(ANTENNA)
(a) Preparation for Check
(1) Remove the antenna plug of the radio receiver
assy.
(b) Noise Check
(1) With the radio receiver assy connector connected,
turn the ignition switch to ACC.
(2) Turn on the radio and choose the AM mode.
(3) Place a flat±head screwdriver or a metal such as a
thin wire on the antenna jack of the radio receiver
assy and check that the noise heard from the
speaker.
Standard: Noise occurs.
OK REPLACE RADIO RECEIVER ASSY
NG
REPLACE ANTENNA CORD SUB±ASSY

± DIAGNOSTICSAUDIO SYSTEM
05±1419
AVENSIS REPAIR MANUAL (RM1018E)
NOISE OCCURS
INSPECTION PROCEDURE
1 CHECK OF SPEAKER INSTALLATION
(a) Check the speaker installation condition.
(1) Check that each speaker is securely installed.
Standard: Malfunction disappears.
HINT:
The radio is equipped with the noise prevention system that works against only the excessively large noise,
thereby excessively large noise do not occur in the radio. If large noise occurs, check whether or not the earth
on the antenna installation part and the proper noise±prevention equipment are all installed, and whether
or not the improper wiring is held.
Condition in which noise occursNoise type
Depressing the acceleration pedal increases noise, and stopping the engine
erases the noise immediately.Alternator noise
Noise occurs during the A/C or the heater operation.Blower motor noise
Rapid acceleration during the drive on the unpaved road or after the IG
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
Stopping the engine erases the small noise that has been heard.Ignition noise
Noise occurs in turn with the blink of the turn signal flash.Flasher noise
Noise occurs during the window washer operation.Washer noise
Noise occurs during the engine running, and it continues to occur after the
engine is stopped.Water temperature sensor noise
Noise occurs during the wiper operation.Wiper noise
Noise occurs when the brake pedal is depressed.Stop light switch noise
Others.Static electricity on the vehicle
HINT:

Identify the condition under 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 impossible and leads to misunderstanding.

The noise should be removed in descending order of loudness.
NG INSTALL IT PROPERLY
OK
IDENTIFICATION OF NOISE SOURCE
054A1±09

05C3F±01
I34714
Driver Side J/B

RAD No.1 Fuse

AM1 Fuse

GAUGE1 Fuse

IG1 RelayFront No.1
Speaker AssyMulti±display
(CRT display)
Display
Steering Pad
Switch LH Engine Room R/B No.1 and
Engine Room J/B No.1

DCC Fuse

AM2 Fuse
Front No.2
Speaker Assy
Steering Pad
Switch RH Sub R/B (LHD)
Sub R/B (RHD)
Navigation
Antenna AssyTelephone Microphone AssyRadio Receiver Assy
Navigation Controller Assy Navigation Controller Holder Navigation ECU Combination
Meter Assy
(Body ECU)
Body ECU
(Combination Meter Assy)
05±1460
± DIAGNOSTICSNAVIGATION SYSTEM
AVENSIS REPAIR MANUAL (RM1018E)
LOCATION

05±1456
± DIAGNOSTICSNAVIGATION SYSTEM
AVENSIS REPAIR MANUAL (RM1018E) DTCCountermeasure and inspected parts Condition Diagnosis item
DF
*4Master ErrorDue to defective condition of component
with a display, master function is switched to
audio equipment.
Error occurs in communication between
sub±master (audio) and master component.
Check harness for power supply of radio
receiver assy.

Check harness for communication system
of radio receiver assy.
E4
*1Multiple Frame AbortMultiple frame transmission is aborted.Since this DTC is provided for engineering
purpose, it may be detected when no actual
failure exists.
(b) Logical address: 58 (Navigation ECU)
DTCDiagnosis itemConditionCountermeasure and inspected parts
10Gyro ErrorError in gyro sensor is detected.
(Abnormal value in voltage output from sen-
sor is detected for more than specified time.)Replace navigation ECU.
42Map Disc ErrorData cannot be read for a certain time due
to scratches or dirt on disc surface or inser-
tion of wrong disc.Inspect disc and replace as necessary.
(Visually check disc surface and wipe it with
a soft cloth.)
43Vehicle Signal ErrorInput error of vehicle signal is detected.
(When no vehicle signal has been input for a
certain time.)
Inspect wire harness.

If wire harness is normal, replace naviga-
tion ECU.
(c) Logical address: 58 (GPS receiver)
DTCDiagnosis itemConditionCountermeasure and inspected parts
11GPS Receiver ErrorOperation error of GPS receiver is detected.At an outdoor site with a clear view, operate
the system to display GPS data. If GPS
mark is not properly displayed after 15 min.
or more, replace navigation ECU.
40GPS Antenna ErrorOpen condition of GPS antenna is detected.
(Open circuit, connection failure of connec-
tors, etc.)Inspect antenna and replace as necessary.
41Power Supply Error of GPS AntennaAbnormal voltage of GPS antenna cable or
short circuit is detected.
Inspect GPS antenna and replace as nec-
essary. (When no continuity is identified
between connector's core and sealed part,
GPS antenna is normal.)

If GPS antenna is normal, replace naviga-
tion ECU.
3. MULTI±DISPLAY (CRT DISPLAY) DISPLAY (Physical address: 110)
HINT:

*1: Even if no failure is detected, it may be stored depending on the battery condition or voltage for
starting an engine.

*2: It is stored in 180 sec. after the power supply connector is pulled out after engine start.

*3: It may be stored when the ignition switch is turned again after engine start.

*4: It may be stored when the ignition switch is turned in 1 min. again after engine start.
(a) Logical address: 01 (Communication control)
DTCDiagnosis itemDiagnosis contentCountermeasure and inspected parts
21ROM ErrorAbnormal condition of ROM is detected.Replace multi±display (CRT display) display.
22RAM ErrorAbnormal condition of RAM is detected.Replace multi±display (CRT display) display.
D5
*1Registered component disconnectedComponent shown by auxiliary code is or
was disconnected from system with ignition
switch ACC or ON.
Communication with component shown by
auxiliary code is not ensured when engine is
started.
Check harness for power supply of compo-
nent shown by auxiliary code.

Check harness for communication system
of component shown by auxiliary code.
D8
*2No response to connection checkComponent shown by auxiliary code is or
was disconnected from system after engine
start.
Check harness for power supply of compo-
nent shown by sub± code.

Check harness for communication system
of component shown by auxiliary code.

±
DIAGNOSTICS NAVIGATION SYSTEM
05±1487
AVENSIS REPAIR MANUAL (RM1018E)
GPS MARK DOES NOT APPEAR
INSPECTION PROCEDURE
1CHECK MARK DISPLAY
(a)Check that the malfunction disappears when placing the vehicle outdoors with \
a good view.
Standard: GPS mark is displayed.
HINT:
At the place surrounded by the architecture, the vehicle cannot receive \
the GPS radio wave.
OKSYSTEM OK
NG
2CHECK OPTIONAL COMPONENT
(a)Check for optional component. (1)Check if there are any optional components on the vehicle.
Standard: There are no optional components on the vehicle.
(2)Check if there is anything such as film stuck to the window or any metal obje\
cts on the instrument
panel.
Standard: There is nothing such as film stuck to the window or any metal objects on the instru-
ment panel.
NGEFFECT FROM OPTIONAL COMPONENT
OK
3REPLACE NAVIGATION ANTENNA ASSY (See page 67±28)
Standard: Normally returns. NG REPLACE NAVIGATION ECU (See page 67±27)
OK
SYSTEM OK
05C3R±01