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Home >> Volvo >> 2007 >> C70 Automatic >> Repair and Diagnosis (Single Page) >> Transmission >> Automatic Trans >> Transmission Control Module (TCM) - Specifications, Other >> Vehicle Communication Information, Transmission Control Module (TCM) (Aw55-50/51SN; 2006-2013) >> Description Of Parameters >> Parameters, Value >> Vehicle Speed Transmission Control Module (TCM)
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Vehicle Speed Transmission Control Module (TCM)

The value displays the vehicle speed. The transmission control module (TCM) receives a signal from the transmission speed sensor which is affected by a toothed pulse wheel and calculates the vehicle speed based on the signal. The speed sensor is an "active" sensor. The signal oscillates between a peak and a trough value. The transmission control module (TCM) calculates the speed which is directly proportional to the frequency.

Measurement range: 0 - 655 km/h.

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