AVC-LAN Circuit

AUDIO / VIDEO: AUDIO AND VISUAL SYSTEM (w/o Navigation System): AVC-LAN Circuit
- AVC-LAN Circuit

DESCRIPTION

Each audio system component connected to the AVC-LAN (communication bus) transfers switch signals using the audio visual communication local area network.

If a short to +B or short to ground occurs in the AVC-LAN, the audio system will not function normally because communication is not possible.

INSPECTION PROCEDURE

NOTICE:
After replacing the radio receiver assembly of vehicles subscribed to pay-type satellite radio broadcasts, XM radio ID registration is necessary (w/ SDARS System).

PROCEDURE

1. INSPECT RADIO RECEIVER ASSEMBLY

(a) Disconnect the radio receiver assembly connectors.





(b) Measure the resistance according to the value(s) in the table below.

Standard Resistance:





Text in Illustration





NG -- REPLACE RADIO RECEIVER ASSEMBLY Removal
OK -- Continue to next step.

2. CHECK HARNESS AND CONNECTOR

HINT
For details of the connectors, refer to Terminals of ECU Audio and Visual System (W/O Navigation System).

(a) Referring to the following AVC-LAN wiring diagram, check all AVC-LAN circuits.

(1) Disconnect all connectors in all AVC-LAN circuits.

(2) Check for an open or short in all AVC-LAN circuits.

OK:

There is no open or short circuit.





NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- Continue to next step.

3. INSPECT MALFUNCTIONING PARTS

(a) Disconnect and reconnect each slave unit one by one until the master unit returns to normal operation.

HINT
* Check all slave units.
* When disconnecting a slave unit causes the master unit to return to normal operation, this indicates that the slave unit is malfunctioning. Replace the malfunctioning slave unit.

OK:

Master unit returns to normal operation.

NG -- PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE Problem Symptoms Table

OK -- REPLACE MALFUNCTIONING PARTS