To determine the ignition timing, the control unit uses information stored in memory and information from sensors installed on the engine. The ignition system receives control signals from a Hall sensor or an impulse sensor. Additionally, the ignition timing is also corrected by the knock sensor signal, which is sensitive to pre-ignition and, accordingly, reduces the ignition timing.
| Engines | Recommended fuel/ROZ | Permissible fuel |
| 4- and 5-cylinder engines | Super unleaded/95 | Normal unleaded/91 |
| Engine 2.8-I-V6 | Super unleaded/98 | Normal unleaded/95 |
When refueling the vehicle with approved fuel, engine power is reduced as fuel consumption increases. It is also not recommended to operate the engine at maximum speeds.
The octane rating of a fuel determines the antiknock properties of the fuel.
Precautions
When working on the ignition system, so as not to damage semiconductor devices (diodes and transistors), the following requirements must be met:
- while the engine is running, do not disconnect the battery, alternator or any electrical connectors;
- when carrying out any work, remove the negative terminal from the battery;
- when carrying out electric welding work on a car, turn off the generator and control unit;
- do not allow the engine to run with the generator disconnected from the electrical system.
Do not touch high-voltage wires with your hand or disconnect them while the engine is running or when the engine is cranking with a starter.
Disconnect wires of system of ignition and wires of measuring devices only at the switched off ignition.
Wash the engine only with the ignition off.
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