Combination Meter: Speedometer: Operation
MT model: The vehicle speed sensor sends vehicle speed signals (4 pulses per rotation of speed sensor's driven shaft) to the speedometer drive circuit and odometer/tripmeter drive circuit in the speedometer.
AT model: The TCM sends vehicle speed signals (4 pulses per rotation of output shaft) to the speedometer drive circuit and odometer/tripmeter drive circuit in the speedometer.
NOTE:
Signals from the speed sensor or TCM are also used by the engine control module, automatic transmission control module, etc.