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Home >> Volvo >> 2009 >> V70 >> Repair and Diagnosis >> External Pages >> Different car >> Section 21 (Electrical Components - Design And Function) >> Transmission Control Module (TCM) (4T65 AWD; 2003-2006) >> TCM Diagnostic Functions >> Description Of Parameters >> Parameters, Value >> TCM Speed Sensor, Calculated Speed
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TCM Speed Sensor, Calculated Speed

WARNING: This page does not describe the selected car, but rather 12 other vehicles, including the 2014 Volvo XC90, 2013 Volvo XC90, 2012 Volvo XC90, 2011 Volvo XC90, and 2010 Volvo XC90. However, it is still accessible from the selected car via links, so may be relevant.

The control module 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, magnet resistive with a current activated interface????. The speed is directly proportional to the frequency.

Measurement range: 0 km/h - top speed

Peak = 14 mA

Trough = 7 mA

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