AVC-LAN Circuit

AUDIO / VISUAL: AUDIO AND VISUAL SYSTEM: AVC-LAN Circuit

AVC-LAN Circuit

DESCRIPTION

Each audio system component connected to the AVC-LAN (communication bus) transfers switch signals by the audio visual communication local area network.
When a short to +B or short to ground occurs in this AVC-LAN, the audio system will not function normally as communication is stopped.

INSPECTION PROCEDURE

PROCEDURE

1. INSPECT RADIO RECEIVER
(a) Disconnect the radio receiver connectors.





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





HINT: *1: for 12 Speaker System

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

2. CHECK HARNESS AND CONNECTOR

HINT: For details of the connectors, refer to "TERMINALS OF ECU" Pinout Values and Diagnostic Parameters.

(a) Referring to the AVC-LAN wiring diagram below, 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 -- PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE