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Home >> Alfa Romeo >> 2019 >> Giulia Base, AWD >> Repair and Diagnosis >> Accessories & Equipment >> Infotainment >> (Amplifier (Amp) Premium 1 - Electrical Diagnostics) >> DTC Troubleshooting >> B1403-1A - Channel 4 Audio Speaker Output - Circuit Resistance Below Threshold >> Possible Causes

Possible Causes

Possible Causes
RIGHT FRONT DOOR SPEAKER AND AMPLIFIER CONNECTIONS
RIGHT FRONT DOOR SPEAKER (+) CIRCUIT SHORTED TO THE RIGHT FRONT DOOR SPEAKER (-) CIRCUIT
AMPLIFIER

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