Toyota Corolla

1992-1998 of release

Repair and car operation

Details of contactless system of ignition with the external electronic block

The cars considered in the real Management, are equipped with two types of systems of ignition – system with the external electronic block and system with the internal block of ignition. The last differ that the electronic block ignitions (switchboard) is built in the case of the distributor of ignition. On both systems the coil of ignition is mounted in the distributor.

Into system of electronic ignition enter:

      – ignition lock;
      – battery;
      – block of electronic ignition;
      – induction sensor;
      – ignition coil;
      – wires of a low-voltage (primary) chain and high-voltage (secondary) chain;
      – ignition and spark plug distributor.

Work of system of ignition the electronic processor block (ESM-blok) operates. ESM-blok provides automatic adjustment of a corner of an advancing of ignition according to signals from sensors which trace various parameters of the engine (such as number of turns, volume of sucked-in air, temperature of cooling liquid, etc.). Such system is called as ignition system with electronic control by the moment of ignition (ESA system).

Contactless systems of ignition are subdivided into two groups – systems with the built-in electronic block of ignition and system with the external electronic block (see fig. Details of contactless system of ignition with the external electronic block and fig. Details of contactless system of ignition with the built-in electronic block). Before replacement of any detail of system of ignition be convinced that all checks are executed in full volume and what exactly this detail it is necessary to replace. It is connected with high cost of details, and also that they as a rule are not subject to return.

At performance of checks and repair of system of ignition it is necessary to observe the following safety rules:

      – at refusal of start-up of the engine do not leave ignition included for a while bigger 10 minutes;
      – connect a tachometer according to the instruction of the manufacturer (before acquisition of a tachometer consult in service of car-care center of the dealer);
      – do not allow a contact of conclusions of the coil of ignition with weight (failure of the block of electronic ignition and the coil otherwise is possible);
      – it is forbidden to disconnect the battery from weight on the working engine;
      – constantly watch that the block of electronic ignition was reliably connected to weight.

The system of ignition develops very high voltage therefore, at works it is necessary to observe extra care. Potential danger represent not only the block of electronic ignition, the coil, the distributor and high-voltage wires, but also such auxiliary details as tips of high-voltage wires, a tachometer, and other instrumentations.