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Home >> Fiat >> 2018 >> 500L Pop >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Entertainment Systems >> (Audio (Radio) - Electrical Diagnostics) >> DTC Troubleshooting >> B1408-1A-Rear Left Audio Speaker Output-Circuit Resistance Below Threshold - Premium >> Theory Of Operation

Theory Of Operation

The radio is provided with a fused Battery and Ground circuit. When the Ignition is turned on, the BCM transmits a wake up signal over the CAN bus to the Radio. The Radio monitors the Speaker circuits for electrical failures.