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Home >> Fiat >> 2014 >> 500c Abarth >> Repair and Diagnosis >> External Pages >> Different car >> Section 53 (Body Control Module (BCM) - DTCS B106A-19 To B2229-62 - 500E) >> Diagnosis And Testing >> B161A-1D-Courtesy/Dome Lamp Control - Circuit Current Out Of Range >> Theory Of Operation

Theory Of Operation

WARNING: This page is about a different car, the 2014 Fiat 500e. However, it is still accessible from the selected car via links, so may be relevant.

The Body Control Module (BCM) provides voltage to the Dome Lamp through the Reading/Rail Lamps Driver circuit and also provides a pulse width modulated ground through the Courtesy Lamps Driver circuit.