P1710

DTC P1710: Malfunction of Vehicle Speed Signal

DIAGNOSTIC FUNCTION
TCM conducts fault detection by detecting the rapid change in the estimated vehicle speed signal received from the ABC-ECU.

JUDGEMENT CRITERIA
^ Difference between the estimated vehicle speed and the one measured before 0.1 second is 29 km/h (18 mph) or more.
^ The status with the vehicle speed of 10 km/h (6.2 mph) or more and with the estimated vehicle speed of 2 km/h (1.2 mph) or less continues for 20 seconds.

PROBABLE CAUSES
^ Malfunction of the CAN bus
^ Malfunction of TCM

DIAGNOSTIC PROCEDURE

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

Q:Is the diagnosis code U0121 set?
YES : Diagnose the CAN system.
NO : Go to Step 2.

STEP 2. M.U.T.-III data list
^ Item 21: Vehicle speed (inference)
^ Item 22: Real vehicle speed

OK: Vehicle speed signal and vehicle speed do not differ greatly.

Q:Is the check result normal?
YES : Intermittent malfunction
NO : Go to Step 3.

STEP 3. Check ABS-related diagnosis codes.

Q:Is the ABS-related diagnosis code set?
YES : Carry out the appropriate troubleshooting.
NO : Go to Step 4.

STEP 4. Symptom recheck after erasing diagnosis code

Q:Is the check result normal?
YES : Intermittent malfunction
NO : Replace TCM.