The following schematic shows the Fiat Punto (including Hatchback and Selecta 1.1L, 1.2L petrol engine and 1.7L diesel engine) circuit. The is integrate with the fuel injection system to form a combined engine management system under the control of one ECU. The ignition side of the system is of the static (distrbutorless) type, consisting only of two twin-output ignition coils located on the left-hand side of the cylinder head. Each supplies two cylinders (one supplies cylinder 1 and 4, and the other cylinders 2 and 3). Under the control of the ECU, the ignition coils operate on the wasted spark principle.

fiat punto ignition coil circuit

LEGEND:
1 Primary Windings
2 Secondary Windings
3 Power Module (inside ECU)
4 Spark Plugs



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