AVC-LAN Circuit

AVC-LAN CIRCUIT

CIRCUIT DESCRIPTION

Each unit of the LEXUS navigation system connected to AVC-LAN (communication bus) communicates by transferring the signals from each switch.

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

In AVC-LAN, Multi-display assy becomes the communication master, and the radio receiver assy has enough resistance necessary for transmitting the communication.

The multi-display assy is connected between the navigation ECU and radio receiver assy, and LEXUS navigation system has the structure that makes communication impossible without the navigation ECU, multi-display assy or radio receiver assy.

Wiring Diagram:

Step 1 - 3:

Step 4 - 5:

Step 6 - 7:

Step 8 - 9:

Step 10 - 11:

Step 12:

Step 13 - 15:

Step 15 (Continued) - 17:

Step 18 - 19:

Step 19 (Continued) - 21:

INSPECTION PROCEDURE