Injection-ignition system diagram

The G.M. system fitted to the Punto 1581 engine belongs to the category of digital electronic integrated ignition systems with solid-state advance and distribution and an electronic intermittent, multipoint semi-sequential petrol injection system.

This device ensures efficient operation and good fuel economy while minimising noxious exhaust emissions because the system complies with USA '83 emission control regulations.

Lastly, this type of system does not require adjustments of any type, for example to engine idle speed, butterfly valve position sensor or exhaust gas CO level.

INJECTION-IGNITION SYSTEM DIAGRAM

1. Absolute pressure sensor
2. Engine coolant temperature sensor
3. Engine idle speed adjustment step motor
4. Intake air temperature sensor
5. Injectors
6. Fuel pressure regulator
7. Throttle valve position sensor
8. Ignition coil with electronic power module incorporated
9. Rpm and TDC sensor.
10. Electronic control unit
11. Injection/ignition system relays
12. Lambda probe
13. E.G.R. solenoid.
14. Vapour recirculation solenoid
15. Electric fuel pump
16. Diagnostic socket
17. Inertia switch
18. Fuel filter
19. Speedometer sensor on gearbox
20. Rev counter
21. Injection-ignition system failure warning light