2000 TOYOTA CAMRY Radio

GENERAL 1999 FEATURES
160GE01
Radio and Cassette DeckCommunication BusCD Changer
Physical Address : 190
Logical Address : 11 (Mode Control)
25 (Command Switch)
60 (Radio Tuner)
61 (Cassette Deck)Physical Address: 240
Logical Address: 43 10
2. Communication Outline
In the audio system that uses AVC-LAN, audio units such as a cassette deck or a CD changer are connected
by a communication bus that establishes communication via serial data signals.
In this system, addresses are used to identify the units with which to establish communication. The addresses
can be broadly divided into two types: the physical address that is assigned to each audio unit such as a cas-
sette deck, CD changer, etc.; and the logical address that is assigned to the function that each unit provides,
such as the radio function or the cassette function. The physical addresses are represented by 3-digit numbers
and the logical addresses are represented by 2-digit numbers.
The signals that are exchanged between the units are the unit's control signal, display data, audio signal, etc.,
which have been rendered into serial data. The configuration of the 4 signals indicated below, which are ren-
dered into serial data and transmitted to the each unit, has been established as a uniform AVC-LAN standard.
Audio Signal
Video Signal
Display Data
Signal Communication Software
The illustration below shows an example of an audio system configuration using AVC-LAN.
3. Operation
System Registration
An audio system that uses AVC-LAN performs a registration process to verify the audio units that comprise
the system.
When the ignition switch is turned to the ACC position, the audio units that comprise the system transmit
the logic address in the units, and the physical address is transmitted by the mode control portion that is
integrated in the smallest audio unit (head unit). By receiving these addresses, the mode control portion veri-
fies the units that comprise the system.
By performing this process, all functions can be controlled regardless of the combination of the units that
comprise the system.

1
GENERAL 1999 FEATURES
160GE02
160GE03
MUTE
Sound
VOL
74
ICIC
Cassette
61Radio
60ICCD
Changer
43
Power Amplifier
Power Supply
Control
Mode ControlCommand
SwitchVolume Cassette Radio
Fig. 1
CD Changer
OFF
CD
Radio
CD
Play Notice
Output ON Request
Output ON Verification
Output OFF Verification
Output ON VerificationOutput ON Request Amplifier Power
Supply ON
Power On Notice Output ON Verification Output ON Instruction
Output ON Instruction
Output ON Instruction Output OFF Instruction
Radio ONCD OFFCD ON
AMFM
Fig. 2
(Shielded)
(Press Switch)
(Press Switch)
11
Switching the System
An audio system that uses AVC-LAN consists of audio units that are connected in parallel as described in
Fig. 1. Each of the audio units has a switch to connect the unit to the communication bus.
To control the audio units in accordance with the system to be operated, the mode control portion transmits
output ON and output OFF instructions. In accordance with the instruction signals transmitted by the mode
control portion, the units turn their switches ON or OFF to switch the operating unit and system. Fig. 2 shows
an example of a signal exchange that takes place between the mode control unit and each audio unit during
the switching of the system.

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.

I GROUND POINT
FAN MAIN RELAY
FAN MAIN RELAY
A/C FAN RELAY NO.2
A/C FAN RELAY NO.3
RADIATOR FAN MOTOR
RETRACT CONTROL
RELAY
RETRACT MOTOR RH
RETRACT MOTOR LH
FRONT TURN SIGNAL
LIGHT RH
PARKING LIGHT RH
FRONT TURN SIGNAL
LIGHT LH
PARKING LIGHT LH
DOOR LOCK CONTROL
SW RH
DOOR KEY LOCK
SW RH
DOOR LOCK MOTOR
RH
BLOWER RESISTOR
A/C AMPLIFIER
RADIO AND PLAYER
HEATER RELAY
AUTO ANTENNA
MOTOR
BLOWER SW
PARKING BRAKE SW
COMBINATION METER
HORN SW [COMB. SW]
TURN SIGNAL FLASHER
DOOR KEY LOCK SW LH
DOOR LOCK MOTOR LH
FUEL CONTROL SW
WOOFER AMPLIFIER
COMBINATION METER
COMBINATION METER
FUEL SENDER
CIGARETTE LIGHTER
O/D MAIN SW
CLOCK
5
5
5
5
4
4
4
4
4BA15
IB18
EA2 10
3E5
3E
6 3G
13 3F
3 3D
1 3B
7
ID115
IC33
IA12
E 3
A
A AW±B
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±BW±B W±B W±B W±B
W±B W±B
W±BW±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
W±B
W±B
BR W±B
BR BR
BR W±B W±BW±B
W±BW±BBR W±B (4A±GZE)
W±B A A A
I 6
I 6
I 2
I 2
I 2
B 5I 5
I 5
I 5
B 5
B 5
B 5
I 5
I 5
I 3I 3
E 3
E 3
E 3
E 2
E 4
E 5
E 4
E 5
E 6E 4
E 4
B 4
EAI 4
B 4
B 4
I 4I 8
IBIC
3C7
4
JUNCTION
CONNECTOR J 1
4
DOOR LOCK CONTROL
RELAY
ELECTRICAL IDLE-UP
CUT RELAY (M/T)FRONT SIDE MARKER
LIGHT RH
FRONT SIDE MARKER
LIGHT LH
BRAKE FLUID LEVEL
WARNING SW
UNLOCK WARNING
SW WIPER AND WASHER
SW [COMB. SW] LIGHT CONTROL SW
[COMB. SW] HEATER CONTROL
ASSEMBLY
HEATER SERVO
MOTOR AMPLIFIER
DIMMER SW
[COMB. SW]
CRUISE CONTROL
MIRROR SW
REAR WINDOW
DEFOGGER SW
POWER WINDOW
MASTER SW
POWER WINDOW
CONTROL RELAY
DOOR LOCK CONTROL
SW
REMOTE CONTROL
MIRROR SW
* The system shown here is an EXAMPLE ONLY. It is different to the actual circuit shown in the SYSTEM CIRCUITS SECTION.

B
The ºCurrent Flow Chartº section, describes which parts each power source (fuses, fusible links, and circuit breakers)
transmits current to. In the Power Source circuit diagram, the conditions when battery power is supplied to each system
are explained. Since all System Circuit diagrams start from the power source, the power source system must be fully
understood.
Theft Deterrent and Door Lock Control
K POWER SOURCE (Current Flow Chart)
11
1
EA1 1EA2 3
7
EB16
E 6
E 7I 2I 2
I 2
E 7
E 7
E 7
2
1
1
2
2
2
2
2
B
B
W W
B B B B BW±B
B
B
B B±O
B±W
W±B
B±W STARTER RELAY INJECTION RELAY15A HAZ±RADIO7.5A AM250A MAIN 1.25B FL MAIN
BATTERY
WWW
W W W
R W±L
W
W
G±W
G
15A TAIL
20A DEFOG
15A RAD CIGTA I L
RELAY 7.5A DOME 40A DOOR LOCK CB
2 1
1 2
4 8
2 3
3 4
G
W±R
P±L B±Y
B±Y
W±R
AM2 IG2
ACC
IG1AM1W W
W±R
W W
W±B
21
1
1
1
1
2
2
2
2
3
4
3
4 1
2
1
22
1
11
1
IGNITION SW I 8
Battery
30A AM2
2
Starter S 220A RADIO NO.1
10A HORN
15A EFI
7.5A DOMEShort Pin
10A HAZARD
The chart below shows the route by which current flows from the battery to each electrical source
(Fusible Link, Circuit Breaker, Fuse, etc.) and other parts.
Engine Room R/B (See Page 20)
ABS
ABS and Traction Control
Cruise Control
Electronically Controlled Transmission and A/T Indicator
Multiplex Communication System
Cigarette Lighter and Clock
Key Reminder and Seat Belt Warning STOP
Fuse Page
194
214
11 2
System
DOME 20A
10ACombination Meter
Headlight
Interior Light
2
2
6 100A ALT
EB1
POWER SOURCE
Light Auto Turn Off187
180
166
210
230
122
10A ECU±B
5 60A ABS
2
6 Fusible Link Block2
* The system shown here is an EXAMPLE ONLY. It is different to the actual circuit shown in the SYSTEM CIRCUITS SECTION.

G
Position of Parts in Instrument Panel
J 1 Junction Connector
J 2 Junction Connector
J 3 Junction Connector
J 4 Junction Connector
J 5 Junction Connector
J 6 Junction Connector
J 7 Junction Connector
J 8 Junction Connector
J 9 Junction Connector
J 10 Junction Connector
J 11 Junction Connector
J 12 Junction Connector
J 13 Junction Connector
J 14 Junction Connector
J 15 Junction Connector
J 16 Junction Connector
J 17 Junction Connector
J 18 Junction Connector
J 19 Junction Connector
J 20 Junction Connector
J 21 Junction Connector
J 22 Junction Connector
J 23 Junction Connector
J 24 Junction Connector
J 25 Junction Connector
J 26 Junction Connector
J 27 Junction Connector
J 28 Junction Connector
J 29 Junction Connector
J 30 Junction Connector
J 31 Junction Connector
J 32 Junction Connector
J 33 Junction ConnectorJ 34 Junction Connector
J 35 Junction Connector
J 36 Junction Connector
J 37 Junction Connector
K 3 Key Interlock Solenoid
O 2 O/D Main SW and A/T Shift Lever Illumination
P 3 Parking Brake SW
P 4 Power Outlet
R 2 Radio and Player
R 3 Radio and Player
R 4 Radio and Player
R 5 Rear Window Defogger SW
R 6 Remote Control Mirror SW
R 7 Rheostat
S 3 Shift Lock ECU
S 4 Stereo Component Amplifier
S 5 Stereo Component Amplifier
S 6 Stop Light SW
T 3 Theft Deterrent ECU
T 4 Theft Deterrent ECU
T 5 Traction Off SW
T 6 Turn Signal Flasher
T 7 Transponder Key Amplifier
U 1 Unlock Warning SW
W 6 Wireless Door Lock ECU

POWER SOURCE
1260A FL ABS
1260A FL ABS 3
3
1
1
2B2
2A1
2B33
3
3
1240A MAIN
EB B 1F1F2E1
A 1C1D1 E 33
1
1
1
2L4
2G3
2G4 2C5
2K63
3
3
3
3 16
5
1
1
4
4
1
3
4
1
3
1
44
3
2
3
2
5
2
5
2
3 2 B
B
BB±R L±WL±B L±R
L±B W±B B±G
B±G L
GR±LR±LGR GR±R
W± L
W±B
W± R
B±R
W±B
W±R
R
R±L
B±GB±G
B±G
B±G
B±R B±R
B±R
L±B
W±B
W±B
W±B R±B
BATTERY
FL MAIN 3. 0W
100A
ALT50A
HTR GENERATOR G 1
ABS SOL RELAY
AB S MOTOR RELAY
HTR RELAY
ENGINE MAIN RELAY
15A EFI
10A HAZARD
20A RADIO NO. 1
10A HORN
30A AM2
SHORT PIN
5A ALT±S
HEAD RELAY
15A HEAD (
RH)(
*9)
15A HEAD RH(
UPR)(
*8)
15A HEAD (
LH)(
*9)
15A HEAD LH(
UPR)(
*8)
(
5S±FE W/O ABS)
(
*7, *2 *4)
(
*2 *5)
(
*7, *2 *4)
(
*2 *5)
GR±R
30A CDS30A RDI
1 1
2 2
10A ECU±B
7. 5A DOME
(
*8)
(
*8)
(
*9)
112
1
10A A/C
2F4
W±B
B±R
12
3
25
1
ST RELAYL±R 5
13
22
2 2
2B
(
*6)
W±B
(
*6) B±W
(
*6) L
(
*6)
A/F HTR RELAY
1 1
W
(
*6) FL 1. 25B25A A/F HTR
F 4 BA, F 5
F 7
FUSIBLE LINK BLOCKE D, F 8C , F 6
F , F 9L
(
*6)
,
1 2(
*3)(
*3)

IF 3 2A 10
B 5
12
A 13
A
A
W±G
BG B
B
W±B W±BW±G
G
BJ UNCTION
CONNECTOR J 5
* 1 : SEPARATE TYPE AMPLIFIER
* 2 : BUILT±IN TYPE AMPLIFIER2 1
C 2
C 9A AAAAAAA
B A B A
B E
B EA D
A D
A D IH1 10
IH2 5
2 3
31 1
RHEOSTAT R 7
GLOVE BOX LIGHT AND SW G 3 A/T SHIFT LEVER ILLUMINATION
[O/D MAIN SW] O 2RADIO AND PLAYERC
COMBINATION METER ILLUMINATION
[COMB. METER] C10
G
G
(
*1) (
*2)
G
G
G
G G
G G
(
*1) HAZARD SW H 7
G W±B
G
ET
ILL B
B B
W±G
(
*1) (
*1)G
(
*2)
J30
JUNCTION
CONNECTORB A, J31
R 2
RADIO AND PLAYERA B, R 3
J16
JUNCTION
CONNECTORB A, J17
R 4
* 3 : AUTOMATI C A/ C
* 4 : MANUAL A/C* 5 : TMMK MADE W/ DAY TIME RUNNING LIGHT
* 6 : EXCEPT * 5

AUTO ANTENNA
* 2 : SEPARATE TYPE AMPLIFIER * 1 : BUILT±IN TYPE AMPLIFIER
W±B
AUTO ANTENNA MOTOR
AND RELAY
BN A27 2K 11
1G 61W 5
L±Y L±Y
1H 31D8
B±R
FROM POWER SOURCE SYSTEM (
SEE PAGE 50)
7. 5A
RAD±
NO. 215A
ECU±IG 20A
RADIO
NO. 1
A BABAAAAAC
B BBCBA
1IN1 IN1 3 IN1 4 IN1 5
B 6
IK 3254
6RADIO AND PLAYER R 3
STEREO COMPONENT AMPLIFIER
RADIO AND PLAYER R 4
L±Y
(
*1)
GR
GR
(
*1) L±Y
GR
B±R
JUNCTION
CONNECTORB A L±Y
(
*2)
GR
(
*2)
L±Y
GR
B±R
+B ACC IG ANT
B±R B±R
(
*1)
W±B
W±B B±R
(
*2)R±B
(
*2) GR
(
*2) L±Y
(
*2) B±R
(
*1) GR
(
*1) L±Y
(
*1)
EIH14
IH13
IH18+B
ACC+B
ANT+B
+B
ACC
ANT+B A7
B2B A S 4 , S 5
J1 6 , J174
3
8
8