B1248

MULTIPLEX COMMUNICATION: MULTIPLEX COMMUNICATION SYSTEM: B1248: AVC-LAN Communication Impossible

DTC B1248 - AVC-LAN Communication Impossible

DESCRIPTION

This DTC is detected when communication is impossible between the multi-display and gateway ECU.






WIRING DIAGRAM





INSPECTION PROCEDURE

PROCEDURE

1. CHECK OPERATION
(a) Check that the radio and player switch can operate normally.
OK:
Radio and player switch can operate normally.
NG -- GO TO AUDIO SYSTEM
OK -- Continue to next step.

2. CHECK RESISTANCE OF COMMUNICATION LINE




(a) Disconnect the G1 ECU connector.
(b) Disconnect the M13 display connector.
(c) Measure the resistance between the wire harness side connectors.
Standard resistance:






NG -- REPAIR OR REPLACE HARNESS AND CONNECTOR
OK -- REPLACE MULTI-DISPLAY