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Home >> Fiat >> 2015 >> 500L Pop, Standard Trans >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Entertainment Systems >> (Audio (Radio) - Electrical Diagnostics - 500L) >> DTC Troubleshooting >> B143A-1A-Microphone 1 - Circuit Resistance Below Threshold >> Theory Of Operation

Theory Of Operation

The Radio controls and monitors both the microphone 1 input circuit (+) and the microphone 1 input circuit (-) for a concern. The Radio communicates over the CAN-Interior Bus. The microphone is located in the rearview mirror.