IGNITION COIL CONSTRUCTION/OPERATION [L3]

L.H.D.

Construction

• Direct ignition coils installed directly to each spark plug have been adopted. By adopting direct ignition coils, high-tension leads have been eliminated in order to simplify the parts of the ignition system, and also to prevent voltage reduction and improve the firing efficiency.

• Independent firing control has been adopted to eliminate firing without spark, increasing firing energy.

• The direct ignition coil consists of an ignition coil, ignition coil connector, and boot area, which has the same function as the current high-tension lead.

R.H.D.

Construction

• The ignition coil has two built-in secondary coils with two secondary terminals corresponding to the adoption of the power distribution system.

• The ignition coil has been installed to the rear of the cylinder head cover.

• The two secondary terminals contain the secondary coils positive and negative terminals. The closed circuit of secondary coils is formed through the high-tension leads and plug caps, two spark plugs, and the cylinder head. Due to this, one coil ignites two cylinders simultaneously.

Operation

• The firing timing of the coil, controlled by igniter function integrated in the PCM, is performed by the PCM.

Terminal Layout