The ignition system consists of four spark plugs, high voltage wires with spark plug tips, and a two coil ignition coil pack.
Ignition coils 3 on block 1 are filled with plastic (see illustration 1.0).
The ignition coil pack, together with the integrated 2 spark plug tips, is located directly on the spark plugs (see illustration 1.0). Each coil provides voltage to two candles.
The spark that ignites the air-fuel mixture is generated by the spark plugs at the command of the electronic engine control unit.
At the same time, the voltage distribution over the candles is produced by electronic components that replace the conventional mechanical ignition distributor with a slider.
The ignition timing is not adjustable. If its value does not match the nominal value, then it is necessary to replace the faulty parts of the ignition system.
The ignition system operates without wear and requires no maintenance. It is only necessary to replace the spark plugs regularly.
Safety measures when working on the ignition system
To avoid personal injury or damage to the fuel injection system or ignition system, the following safety precautions are recommended:
- do not touch or remove high voltage wires while the engine is running or being started;
- connect and disconnect wires of systems of injection of fuel and ignition only at the switched off ignition. The same applies to the instrument leads used to make measurements on these systems;
- persons with a pacemaker should not be allowed to work on the electronic ignition system;
- don't close on «mass» (-) terminal 1 ignition coils;
- perform a spark test, if necessary, only on the ignition coil pack removed with four spark plugs connected, making good contact with «weight» (-);
- switch off the ignition and disconnect the crankshaft position sensor plug when performing work that requires cranking the engine with a starter, for example, i when checking compression, to avoid starting it;
- without fail, at least one seat of the ignition coil unit must be connected to «weight» (-) in case of checking the system with the coil pack disconnected. On the primary winding of the coils, the voltage can reach up to 400 volts;
- do not connect a tester with a test light to terminal 1 of the ignition coil.