ES300 — NEW FEATURES 19 System Outline ’99 ES300 ’98 ES300 Active Control Engine Mount The damper characteristic of the front engine mount is varied to reduce idling vibration — Diagnosis When the ECM detects a malfunction, the ECM diagnoses and memorized the failed section. The diagnosis system includes a function that de- tects a malfunction in the evaporative emission control system. Fail-Safe When the ECM detects a malfunction, the ECM stops or controls the engine according to the data already stored in the memory.