Caution: Since the ignition system contains high voltage, exercise extreme caution when working with it. This applies not only to the booster, coil, distributor and spark plugs, but also to the spark plug caps, tachometer and other equipment.
1. The ignition system has full control over the ignition timing. The engine management computer determines the optimal advance taking into account the engine speed and temperature, the throttle position and the vacuum in the intake manifold. These parameters are fed to the ECU input using the appropriate sensors. Ignition timing during engine start-up and warm-up, as well as at idle, is determined by separate algorithms.
Distributor ignition systems
2. The ignition system with a distributor is installed on all models produced before 1990. The system includes an ignition coil, distributor, ignition control unit, spark plugs and high-voltage wires. The ignition distributor is driven by rotation from the camshaft.
3. The location of the system elements depends on the model, year of manufacture, engine and transmission types. On some 4-cylinder models, the coil and ignition control unit are located inside the distributor, while on other models, the coil and control unit are mounted outside the distributor in the engine compartment. Some models have a separate ignition coil located in the engine compartment, while the ignition control unit is integrated with the ECU. On all V-engine models, the ignition coil and ECU are located inside the distributor.
Distributorless ignition systems
4. Models produced since 1998 are equipped with an ignition system without a distributor. The system includes a block of ignition coils, directly connected to all spark plugs/