Dtc B1248 Avc-Lan Communication Impossible

Communication System. Lexus Is250, Is220D. Gse20 Ale20
Multiplex Communication. Lexus Is250, Is220D. Gse20 Ale20

DESCRIPTION

INSPECTION PROCEDURE

CHECK DTC

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
  1. AVC-LAN (radio receiver or multi-display)
  2. Wire harness

INSPECTION PROCEDURE

1.CHECK DTC

  1. 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