Component Tests and General Diagnostics

CIRCUIT DESCRIPTION

Each unit of the LEXUS navigation system connected with AVC-LAN (communication bus) transmits a signal of each switch. When +B short or GND short occurs in this AVC-LAN, the LEXUS navigation system will not function normally as the communication is discontinued. In this AVC-LAN, the radio and player becomes the master of the communication, having a resistance necessary for transmitting the signals.

AVC-LAN:

AVC-LAN

Wiring Diagram:

Steps 1 - 3:

Steps 4 - 6:

Steps 7 - 8:

INSPECTION PROCEDURE