P1720

DTC P1720 VEHICLE SPEED SENSOR (A/T OUTPUT)

Description

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

ECM receives two vehicle speed sensor signals via CAN communication line. One is sent from "ABS actuator and electric unit (control unit)", and the other is from TCM (Transmission control module). ECM uses these two signals for engine control.

CONSULT-II Reference Value in Data Monitor Mode:

CONSULT-II Reference Value in Data Monitor Mode

On Board Diagnosis Logic:

On Board Diagnosis Logic

DTC Confirmation Procedure

CAUTION: Always drive vehicle at a safe speed.

NOTE: If DTC Confirmation Procedure has been previously conducted, always turn ignition switch OFF and wait at least 10 seconds before conducting the next test.

WITH CONSULT-II
1. Turn ignition switch ON.
2. Select "DATA MONITOR" mode with CONSULT-II.
3. Start engine.
4. Drive vehicle at a speed of 20 km/h (12 MPH) or more for at least 5 seconds without brake pedal depressing.
5. If 1st trip DTC is detected, go to "Diagnostic Procedure".

WITH GST
Follow the procedure "WITH CONSULT-II" above.

Diagnostic Procedure:

Diagnostic Procedure