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Home >> Volvo >> 2008 >> S40 T-5, AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 15 (Transmission - Specifications, Other (644 Body)) >> Vehicle Communication Information (Aw55-50/51SN; 2001-2004) >> Description of parameters >> Parameters, Value >> Transmission control module (TCM), transmission output speed sensor

Transmission control module (TCM), transmission output speed sensor

WARNING: This page is about a different car, the 2004 Volvo S40, 2003 Volvo S40, 2002 Volvo S40, 2001 Volvo S40, and 2000 Volvo S40. However, it is still accessible from the selected car via links, so may be relevant.

Only digital display 

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. The signal oscillates between a peak and a trough value. The control module calculates the speed which is directly proportional to the frequency.

Measurement range: 0 km/h - top speed

Peak value: 14 mA

Trough value: 7 mA

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