AVC-LAN Circuit

NAVIGATION: NAVIGATION SYSTEM (for HDD): AVC-LAN Circuit

AVC-LAN Circuit

DESCRIPTION

Each unit of the navigation 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 the AVC-LAN, the navigation system will not function normally as the communication is discontinued.

INSPECTION PROCEDURE

PROCEDURE

1. CHECK RADIO RECEIVER ASSEMBLY





(a) Disconnect the L51, L52 and L53 receiver connectors.
(b) Measure the resistance according to the value(s) in the table below.
Standard resistance:






NG -- REPLACE RADIO RECEIVER ASSEMBLY
OK -- Continue to next step.
2. CHECK HARNESS AND CONNECTOR
HINT: For details of the connectors, refer to "TERMINALS OF ECU" Navigation System (for HDD).
(a) Referring to the AVC-LAN wiring diagram below, check all AVC-LAN circuits.
(1) Disconnect all connectors in all AVC-LAN circuits.
(2) Check for an open or short in all AVC-LAN circuits.
OK:
There is no open or short circuit.





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