2003 LEXUS LS430 Identifying ac

Fig. 10: Identifying Radio Receiver Assy Screws And Brackets
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
7.INSTALL RADIO RECEIVER ASSEMBLY W/BRACKET
a. Make sure that the battery negative terminal is disconnected.
b. Connect the connector.
c. Install the radio receiver assembly with the 2 bolts.
REPLACEMENT
HINT:
See COMPONENTS .
See LOCATION .
Installation is in the reverse order of removal.

Fig. 27: Identifying Television Camera Assy Bolts
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
REPLACEMENT
HINT:
See COMPONENTS
See LOCATION .
Installation is in the reverse order of removal.
1.REMOVE LUGGAGE COMPARTMENT FLOOR MAT (See step 18 on OVERHAUL
)
2.REMOVE DECK TRIM SIDE BOARD RH (See OVERHAUL
)
3.REMOVE REAR FLOOR FINISH PLATE (See step 20 on OVERHAUL
)
4.SEPARATE LUGGAGE COMPARTMENT TRIM COVER FRONT (See step 19 on
OVERHAUL
)
5.REMOVE LUGGAGE COMPARTMENT TRIM COVER ASSY RH (See step 22 on
OVERHAUL
)
6.REMOVE TELEVISION CAMERA ECU

By converting the digital signals to analog, it can play music and other things. In general, CD
players can play 4.7-inch (12 cm) or 3.2-inch (8 cm) disc.
HINT:
Do not disassemble any part of the CD player.
Do not apply oil to the CD player.
Do not insert anything but a CD into the CD player.
2.AVC-LAN Description
a. What is AVC-LAN?
AVC-LAN, an abbreviation for "Audio Visual Communication Local Area Network", is a united
standard developed by the manufacturers in affiliation with Toyota Motor Corporation. This
standard pertains to audio and visual signals as well as switch and communication signals.
Fig. 3: Identifying AVC
-LAN Description
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
b. Purpose:
Recently, car audio systems have rapidly developed and the functions vastly changed. The
conventional car audio system is being integrated with multi-media interfaces similar to those in
navigation systems. At the same time, customers are demanding higher quality from their audio
systems. This is merely an overview of the standardization background. The specific purposes are
as follows.
1. To solve sound problems, etc. caused by using components of different manufacturers
through signal standardization.

Fig. 6: Identifying Service Area
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
2. Radio reception problems
HINT:
In addition to static, other problems such as "phasing", "multi-path", and "fade out" exist. These problems
are not caused by electrical noise, but by the radio signal propagation method itself.
1. Phasing
The AM frequency band reflects off the earth's ionosphere at night. When this occurs, the reflected
signal may interfere with the direct signal sent by the same transmitter. This phenomenon is known
as "Phasing".

Fig. 7: Identifying Phasing Area
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
2. Multi-path
A radio signal can sometimes be reflected by an obstruction in its path. When this occurs, the
reflected signal may interfere with the direct signal sent from the transmitter. This phenomenon is
known as "Multi-path".

Fig. 8: Identifying Multi-Path Area
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
3. Fade out
FM radio frequency is higher than AM. Therefore, it is more likely to be reflected by large
obstructions such as tall buildings or mountains. For this reason, the FM signal will gradually
weaken or disappear when the vehicle is behind such obstructions. This phenomenon is known as
"fade out".

Fig. 9: Identifying Fade Out Area
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
3. Noise problem
It is very important for a technician to understand the specifics of the noise problem. To diagnose the
symptom, use the table below.
RADIO FREQUENCY CHART
Radio FrequencyNoise occurrence conditionPresumable cause
AMNoise occurs in a specified areaForeign noise
AMNoise occurs when listening to an
intermittent broadcastAn identical program transmitted from
multiple towers can cause noise where
the signals overlap
FMNoise occurs only at nightMusic beat from a far-off broadcast
FMNoise occurs while driving in a specified
areaMulti-path or phasing noise resulting
from a change in FM frequency

Fig. 10: Identifying Audio Function Chart
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
REAR AUDIO AND REAR A/C CONTROL SW FUNCTION