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Home >> Volvo >> 2013 >> XC90 R-Design, AWD >> Repair and Diagnosis >> Engine Performance >> System >> Electronic Modules - Design And Function >> Engine Control Module (ECM) (B8444S; 2005-2011) >> Design >> Transmission Control Module (TCM)
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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).