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Home >> Volvo >> 2003 >> XC90 Base, AWD >> Repair and Diagnosis (Single Page) >> Restraints >> Passive Restraints >> 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

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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