The following schematic shows the Fiat Punto (including Hatchback and Selecta 1.1L, 1.2L petrol engine and 1.7L diesel engine) Ignition Coil circuit. The ignition system is integrate with the fuel injection system to form a combined engine management system under the control of one ECU. Fiat Punto Ignition Coil Circuit
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1990 Toyota Supra MA70 Fuel System Circuit Diagram
The following circuit diagram shows 1990 Toyota Supra MA70 Fuel System Circuit Diagram. The ECU receives signals from various sensors indicating changing engine operating conditions such as: Exhaust oxygen content, Intake air volume, Intake air temperature, Coolant temperature, Engine rpm, Acceleration / deceleration etc.
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