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Home >> Lexus >> 2008 >> IS 250 AWD >> Repair and Diagnosis >> Accessories & Equipment >> Communication Devices >> Multiplex Communication >> Multiplex Communication System >> DTC B1248 AVC-LAN Communication Impossible >> Inspection Procedure

Inspection Procedure

  1. CHECK OPERATION 
    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 

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