Contents: Ignition system ⇓ Malfunctions ⇓
Ignition system
The ignition timing is set by the electronic control system. The initial data for it is generated by the engine control unit.
Engine condition (rotation speed, temperature, etc.) determined using various sensors. Based on their signals, a control command is generated to set the ignition timing.
Malfunctions
| Signs of malfunction | Possible cause | Method of elimination |
| The engine does not start or starts with difficulty (the starter turns the engine normally) | The ignition system is faulty | Check the ignition coil |
| The crankshaft position sensor is faulty | Replace | |
| High voltage wire defect | Check the high voltage wire | |
| The spark plugs are faulty | Replace spark plugs | |
| Ignition system wiring broken or disconnected | Check the wiring | |
| Engine stalls or runs rough at x/run | The spark plugs are faulty | Replace spark plugs |
| Malfunction in ignition system wiring | Check the wiring | |
| The ignition system is faulty | Check the ignition coil | |
| The high voltage wire is faulty | Check the high voltage wire | |
| Sluggish acceleration, engine revs poorly | The spark plugs are faulty | Replace spark plugs |
| Malfunction in ignition system wiring | Check the wiring | |
| Increased fuel consumption | The spark plugs are faulty | Replace spark plugs |