DTC P1720: VSS: Description

NOTE: If DTC P1720 is displayed with DTC U1000 or U1001, first perform the trouble diagnosis for DTC U1000, U1001. Refer to "DTC U1000. U1001 CAN COMMUNICATION LINE ".

ECM receives two vehicle speed sensor signals via CAN communication line. One is sent from "unified meter and A/C amp.", and the other is from TCM (Transmission control module). ECM uses these two signals for engine control.