Depending on the signal received from the crankshaft sensor, the injection system sends a command to activate the corresponding ignition coil.
Each ignition coil generates two high-voltage pulses simultaneously:
- ignition coil 1 simultaneously generates impulses for spark plugs of cylinders 1 and 5;
- ignition coil 2 simultaneously generates impulses for spark plugs of cylinders 2 and 6;
- Ignition coil 3 simultaneously generates impulses for the spark plugs of cylinders 3 and 4.
The flywheel ring gear consists of 60 identical teeth of a certain size, located at an equal specified interval. Two teeth are missing, thereby forming an absolute position mark located in an azimuth of 60°to the TDC position. That is, in fact, the crown has 58 teeth.
The crankshaft position sensor determines the position of TDC and BDC and the crankshaft speed. The position of the sensor is not adjustable, since its position is initially adjusted by the mounting plate. The sensor must be secured to the clutch housing with special bolts with a long unthreaded part of the rod.
The engine is equipped with 3 ignition coils, independent of the injection system control unit, that is, interchangeable and mounted on the cylinder head cover
The control unit is an electronic system. determining the ignition timing parameters, depending mainly on the crankshaft speed and the engine load
Precautions
- Voltage in electronic ignition systems reaches 30,000 V. To avoid electric shock or ignition failure, certain precautions must be observed.
- Do not touch or disconnect the high voltage ignition wire with your hand while the engine is running or the starter is turning it.
- Disconnect the ignition system wires and measuring instrument wires only when the ignition is turned off.
- Wash the engine only with the ignition off.
Anti-theft engine immobilizer
The car is equipped with a 2nd generation anti-theft engine blocking system.
Replacing the fuel injection system control unit
Fuel injection control units are supplied as spare parts uncoded but ready for coding.
When replacing a block, you need to enter a code into it. unique for each vehicle, then check the operation of the engine immobilizer system.
To do this, just turn on the ignition for a few seconds, then turn it off and remove the key from the ignition.
Checking the operation of the engine immobilizer system Remove the key from the ignition switch, and after 10 seconds the red warning light of the engine immobilizer system should flash.
Operation of the injection system and air conditioning system
When the air conditioning system is turned on. The crankshaft frequency in cold conditions increases to 900 min-1.
Under certain operating conditions, the injection system control unit requests that the compressor be turned on and running. Turning on the compressor is prohibited for 10 seconds after starting the engine.
The compressor will not turn on if the coolant temperature is more than 115°C. The start and operation of the compressor is prevented. if the engine speed exceeds 6000 min-1