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Home >> Alfa Romeo >> 2021 >> Stelvio Ti >> Repair and Diagnosis >> Accessories & Equipment >> Entertainment Systems >> (Audio (Radio) (ETM) - Electrical Diagnostics) >> DTC Troubleshooting >> B143A-13 - Microphone 1 - Circuit Open >> Possible Causes

Possible Causes

Possible Causes
LEFT HANDS FREE MICROPHONE AND RADIO/ETM CONNECTIONS
HANDS FREE MICROPHONE (+/-) CIRCUIT OPEN
RADIO/ETM

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

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