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Home >> Volvo >> 2000 >> S80 Base >> Repair and Diagnosis >> Electrical >> Body Electrical >> Control Modules - Design And Function - 3 Of 3 >> Transmission Control Module (TCM) (Aw50/51 AWD; Aw55-50/51SN; 2004-2006) >> Transmission control module (TCM) diagnostic functions >> General information
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General information

Fig 1: Identifying Transmission Control Module
GLL104332Courtesy of VOLVO CARS OF NORTH AMERICA.

The control module has a built-in diagnostic system, the Volvo on-board diagnostic (OBD) system. This system continuously monitors its own system and the input and output signals.

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