AVC-LAN Circuit

NAVIGATION: NAVIGATION SYSTEM: AVC-LAN Circuit

AVC-LAN Circuit

DESCRIPTION

Each unit of the navigation system connected to the AVC-LAN (communication bus) transfers switch signals by the audio visual communication local area network.
If a short to +B or short to ground occurs in this AVC-LAN, the navigation 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:






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) Check for an open or short in all AVC-LAN circuits.
OK:
There are no open or short circuits.






NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE