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Home >> Volvo >> 2021 >> S90 T6 R-Design >> Repair and Diagnosis >> Engine Performance >> Engine Control Systems >> Electrical Equipment - Design >> (Driver Door Module (DDM)) >> Driver Door Module (DDM) (4/213) [2017-2022] >> Diagnostic Information

Diagnostic Information

The Driver Door Module (DDM) has a built-in diagnostic system, which continuously monitors the control module and the input and output signals.