AVC-LAN (Communication Bus) Circuit

AVC-LAN (Communication bus) Circuit

CIRCUIT DESCRIPTION




Each unit of LEXUS navigation system connected with AVC-LAN (communication bus) transfers the signal of each switch by communication.

When +B short and GND short occur in this AVC-LAN, LEXUS navigation system will not function normally as the communication is discontinued.

In this AVC-LAN, multi-display becomes the master of the communication, and the radio receiver assembly has a resistance necessary for transmitting the communication.

Multi display is connected between Navigation ECU and radio receiver assembly, LEXUS navigation system has the structure that makes communication impossible without Navigation ECU, or radio receiver assembly.

Wiring Diagram:

Step 1 - 2:

Step 3 - 5:

Step 6 - 8:

Step 9:

INSPECTION PROCEDURE