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Home >> Volvo >> 2009 >> S80 Base >> Repair and Diagnosis (Single Page) >> Electrical >> Motors, Switches, Relays >> Miscellaneous Electrical - Design And Function - 2 Of 5 >> Engine Control Module (ECM) (B6304T2; 2008-2010) >> Design >> Transmission Control Module (TCM)

Transmission Control Module (TCM)

The engine control module (ECM) uses a directly connected signal from the transmission control module (TCM) in the start function (activating the starter motor).