DTC U3000-44: BCM Internal Malfunction: Notes

WARNING: This page is about a different car, the 2016 Mazda CX-3. However, it is still accessible from the selected car via links, so may be relevant.

Description	BCM internal malfunction
Detection condition	BCM detects the internal malfunction with the ignition switched ON (engine off or on).
Fail-safe	Exterior lighting system Turn the TNS (parking lights) and headlights LO on, and turn off other exterior light controls. Auto light system Continue the controls prior to the auto light malfunction detection. Windshield wiper system Continue the controls prior to the windshield wiper malfunction detection. Front washer system Stop the front washer control. Auto wiper system Continue the controls prior to the windshield wiper malfunction detection.
Possible cause	NOTE: If the negative battery cable is disconnected, this DTC may be output. BCM malfunction
System wiring diagram	Not applicable