Vehicle Speed Sensor: Description and Operation
VSSDescription
The vehicle speed signal is sent to the combination meter from the VDC/TCS/ABS control unit by CAN communication line. The combination meter then sends a signal to the ECM by CAN communication line.
VEHICLE SPEED SENSOR (A/T OUTPUT)
Description
ECM receives two vehicle speed sensor signals via CAN communication line. One is sent from VDC/TCS/ABS control unit, and the other is from TCM (Transmission control module). ECM uses these two signals for engine control.