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Home >> Volvo >> 2007 >> XC70 >> Repair and Diagnosis >> External Pages >> Different car >> Section 103 (Transmission Control Module (TCM) Vehicle Communication - Specifications) >> Vehicle Communication Information, Transmission Control Module (TCM) (B5254T4, TF-80SC AWD; 2006-2007) >> Description of parameters >> Parameters, value >> Vehicle speed, Transmission Control Module (TCM)

Vehicle speed, Transmission Control Module (TCM)

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The value indicates vehicle speed. The Transmission Control Module (TCM) receives a signal from the transmission speed sensor, which is actuated by toothed pulse gear and uses the signal to calculate vehicle speed. The speed sensor is a so-called active sensor. The signal oscillates between a peak and a valley value. The Transmission Control Module (TCM) calculates speed, which is in direct proportion to the frequency.

Measurement range: 0 - 655 km/h.

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