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Home >> Alfa Romeo >> 2019 >> Giulia Base, AWD >> Repair and Diagnosis >> Accessories & Equipment >> Exterior Lights >> (Adaptive Front Lighting System Module - Electrical Diagnostics) >> DTC Troubleshooting >> B1030-01-Lin Sub - Bus Malfunction - General Electrical Failure >> Possible Causes

Possible Causes

Possible Causes
FRONT LAMP ASSEMBLY OR ADAPTIVE FRONT LIGHTING SYSTEM (AFLS) MODULE CONNECTIONS
LIN BUS CIRCUIT OPEN OR HIGH RESISTANCE
LIN BUS CIRCUIT SHORTED TO GROUND
LIN BUS CIRCUIT SHORTED TO VOLTAGE
ADAPTIVE FRONT LIGHTING SYSTEM (AFLS) MODULE

Always perform the PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE before proceeding.  Refer to STANDARD PROCEDURE .