Vehicle Speed Is Not Held Within Set Speed ±3 Km/H (±2 Mph) On A Level Road

Check the vehicle speed sensor. Ref. to EYESIGHT (DIAGNOSTICS) (EXCEPT FOR HEV)>DIAGNOSTIC PROCEDURE WITH ECU CANCEL CODE>22 .

Is the check result OK?

Yes:  Replace the ECM. Ref. to FUEL INJECTION (FUEL SYSTEMS) (H4DO (EXCEPT FOR HEV))>ENGINE CONTROL MODULE (ECM)>REMOVAL .

No:  Repair or replace the faulty portion according to the inspection result.