AVC-LAN Circuit between Radio Receiver and Gateway ECU

NAVIGATION: NAVIGATION SYSTEM: AVC-LAN Circuit between Radio Receiver and Gateway ECU

AVC-LAN Circuit between Radio Receiver and Gateway ECU

DESCRIPTION

The navigation system uses the AVC-LAN to control communication between all of its units. Each unit is connected to the AVC-LAN and communicates by sending and receiving switch signals.
When the AVC-LAN has a +B short or a GND short, communication is cut and the navigation system will not function normally.

WIRING DIAGRAM





INSPECTION PROCEDURE

PROCEDURE

1. CHECK WIRE HARNESS (GATEWAY ECU - RADIO RECEIVER)




(a) Disconnect the G3 ECU connector.
(b) Disconnect the R1 receiver connector.
(c) Measure the resistance of the wire harness side connectors.
Standard resistance:






NG -- REPAIR OR REPLACE HARNESS AND CONNECTOR
OK -- PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE OR DIAGNOSTIC TROUBLE CODE CHART