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Home >> Alfa Romeo >> 2019 >> Giulia Base, AWD >> Repair and Diagnosis >> Accessories & Equipment >> Infotainment >> Amplifier (Amp) Premium 2 - DTCS B1400-11 To B1406-92 >> DTC Troubleshooting >> B1403-11 - Channel 4 Audio Speaker Output - Circuit Short To Ground >> Possible Causes

Possible Causes

Possible Causes
LEFT REAR DOOR SPEAKER AND AMPLIFIER CONNECTIONS
LEFT REAR DOOR TWEETER SPEAKER AND AMPLIFIER CONNECTIONS
LEFT REAR DOOR SPEAKER (+/-) CIRCUIT SHORT TO GROUND
LEFT REAR DOOR TWEETER SPEAKER (+/-) CIRCUIT SHORT TO GROUND
AMPLIFIER

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