Code No. P1710: Malfunction of Vehicle Speed Signal


DIAGNOSTIC FUNCTION



JUDGMENT CRITERIA



  • Difference between the estimated vehicle speed and the one measured before 0.1 seconds is 17 km/h or more.
  • The status with the vehicle speed of 10 km/h or more and with the estimated vehicle speed of 2 km/h or less continues for 20 seconds.

PROBABLE CAUSES



  • Malfunction of the CAN bus
  • Malfunction of CVT-ECU

DIAGNOSTIC PROCEDURE

STEP 1. Troubleshoot the CAN system if diagnosis code U0121 is set.

Q. Is the diagnosis code U0121 set?
Diagnose the CAN system.
Go to Step 2.

STEP 2. M.U.T.-III data list

  • Item 21: Vehicle speed signal
  • Item 22: Vehicle speed
OK: Vehicle speed signal and vehicle speed do not differ greatly.

Q. Is the check result normal?
Intermittent malfunction
Go to Step 3.

STEP 3. Check ASC-related diagnosis codes.

Q. Is the ASC-related diagnosis code set?
Carry out the appropriate troubleshooting.
Go to Step 4.

STEP 4. Symptom recheck after erasing diagnosis code

Q. Is the check result normal?
Intermittent malfunction
Replace CVT-ECU.