DTC B1248 AVC-LAN Communication Impossible

DESCRIPTION

This DTC is detected when communication between the AVC-LAN (radio receiver or multi-display) and gateway ECU stops for more than 10 seconds.

DTC No.	DTC Detection Condition	Trouble Area
B1248	AVC-LAN communication is impossible	AVC-LAN (radio receiver or multi-display) Wire harness

1.CHECK DTC

Check for AVC-LAN communication DTCs.

OK:
AVC-LAN communication DTCs are not output, and there are no symptoms specified in the problem symptoms table.

NG

GO TO "DIAGNOSTICS TROUBLE CODE CHART" OF AUDIO SYSTEM OR NAVIGATION SYSTEM

OK

REPLACE GATEWAY ECU

LEXUS IS250, IS220d / GSE20 ALE20