AUDIO AND VISUAL SYSTEM(for Radio and Display Type) AVC-LAN Circuit
| DTC Code | DTC Name |
|---|---|
| AVC-LAN Circuit |
DESCRIPTION
Each unit of the audio and visual system connected to the AVC-LAN (communication bus) transfers switch signals using the AVC-LAN.
If a short to +B or short to ground occurs in the AVC-LAN, the audio and visual system will not function normally because communication is not possible.
WIRING DIAGRAM
CAUTION / NOTICE / HINT
The radio and display receiver assembly is the master unit.
PROCEDURE
INSPECT RADIO AND DISPLAY RECEIVER ASSEMBLY
Remove the radio and display receiver assembly with the connector(s) still connected.
-
Measure the resistance according to the value(s) in the table below.
Standard Resistance
Tester Connection
Condition
Specified Condition
7 (TX1+) - 8 (TX1-)
Always
60 to 80 Ω
Result
Proceed to
OK
NG
CHECK HARNESS AND CONNECTOR (STEREO COMPONENT AMPLIFIER ASSEMBLY - RADIO AND DISPLAY RECEIVER ASSEMBLY)
Disconnect the M32 stereo component amplifier assembly connector.
Disconnect the G143 radio and display receiver assembly connector.
Measure the resistance according to the value(s) in the table below.
Standard Resistance
Tester Connection
Condition
Specified Condition
M32-8 (TX+) - G143-7 (TX1+)
Always
Below 1 Ω
M32-7 (TX-) - G143-8 (TX1-)
Always
Below 1 Ω
M32-8 (TX+) - Body ground
Always
10 kΩ or higher
M32-7 (TX-) - Body ground
Always
10 kΩ or higher
Result
Proceed to
OK
NG
NG REPAIR OR REPLACE HARNESS OR CONNECTOR
CHECK MALFUNCTIONING PARTS
Disconnect and reconnect each slave unit one by one until the master unit returns to normal operation.
Tip:Check all slave units.
If disconnecting a slave unit causes the master unit to return to normal operation, the slave unit is defective and should be replaced.
OK
Master unit returns to normal operation.
Result
Proceed to
OK
NG
OK REPLACE MALFUNCTIONING PARTS