The ignition system in the engine with a displacement of 1998 cm33 model XU10J4 (with 16 valves) It has "straight" type. The components of the system consist of two amplifier modules, four ignition coils and a knock sensor. The ignition system is integrated with the fuel injection system into the ECU engine management system (through ignition booster blocks).
Each ignition booster unit controls two ignition coils: matched to the spark plugs and mounted directly to the spark plugs, one coil per spark plug. This eliminates the use of high voltage wires. The ECU uses inputs from various sensors to calculate the required ignition timing and ignition coil storage time.
The knock sensor is mounted on the cylinder head and prevents detonation in the cylinders under load. The sensor is sensitive to vibration and detects detonation, which occurs when the fuel mixture in the cylinders burns with detonation. The knock sensor sends an electrical signal to the ECU, which in turn decreases the ignition timing until knock stops.