All of the following are major components of the computer system except

Radiator and other components that allow a coolant to circulate and maintain a constant engine operating temperature. Cooling systems are also necessary to control operating temperatures of a HV battery, motor-generator, or HV ECM circuit in hybrid/electric vehicles.

Ratio by weight between the air and fuel that makes up an engine's fuel charge.

Vehicle design in which the body is installed over the frame and held in place by large bolts. This design is still used on some large passenger cars, larger vans, pickup trucks, and sport utility vehicles.

Components that produce a spark to ignite the air-fuel mixture in the engine.

Electric and electronic devices that control specific vehicle systems.

System that consists of a battery, alternator, drive belt, voltage regulator, charge indicator, and charging harness. The job of the system is to reenergize the battery as the engine is running and provide electricity to the various vehicle electrical systems.

System that uses pressure from an electric or mechanical fuel pump to spray fuel into an engine's intake manifold (multiport or manifold injection) or its combustion chambers (direct injection).

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