AVC-LAN Circuit

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

DESCRIPTION

Each unit of the audio system connected to the AVC-LAN (communication bus) transfers the signal of each switch by communication.

When a short to +B or short to ground occurs in this AVC-LAN, the audio system will not function normally as the communication is discontinued.

WIRING DIAGRAM





INSPECTION PROCEDURE

PROCEDURE

1. INSPECT RADIO RECEIVER ASSEMBLY

(a) Disconnect the G21*1 and G8*2 radio receiver assembly connectors.





*1: for 9 Speakers

*2: w/ USB Audio System

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

Standard Resistance:





*1: for 9 Speakers

*2: w/ USB Audio System

Text in Illustration





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

2. CHECK HARNESS AND CONNECTOR (RADIO RECEIVER - COMPONENT WHICH HAS STORED THIS CODE)

HINT
For details of the connectors, refer to Terminals of ECU Pinout Values and Diagnostic Parameters.

(a) Referring to the wiring diagram, check the AVC-LAN circuit between the radio receiver assembly and the component which has stored this code.

(1) Disconnect all connectors between the radio receiver assembly and the component which has stored this code.

(2) Check for an open or short in the AVC-LAN circuit between the radio receiver assembly and the component which has stored this code.

OK:

There is no open or short circuit.

NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR

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