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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 17 km/h (11 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?

	Diagnose the CAN system.

	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?

	Intermittent malfunction

	Go to Step 3.

STEP 3. Check ABS-related diagnosis codes.

Q. Is the ABS-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 TCM.