Vehicle electrical system
Starter
* Converts electrical energy into mechanical energy to start the engine.
Generator
* Converts mechanical energy from the engine into electrical energy, charging the battery and powering the vehicle’s electrical systems.
Battery
* Stores electrical charge to start the engine and power electrical systems when the engine is not running.
Starter relay
* Controls the starter and transfers current from the battery.
Starter solenoid
* Shifts the starter from neutral to start position.
Spark plugs
* Create an electric spark to ignite the fuel-air mixture in the engine cylinders.
Fuel injection system
* Accurately doses and atomizes fuel into the engine cylinders.
Ignition coils
* Converts low voltage from the ignition system to high voltage needed by the spark plugs.
Distributor
* Distributes high voltage current from the ignition coil to the appropriate spark plugs at the right time.
Crankshaft sensor
* Detects crankshaft position and transmits a signal to the Engine Control Module (ECM) to synchronize ignition and fuel injection.
Camshaft position sensor
* Detects camshaft position and transmits a signal to the ECM to synchronize fuel injection.
Engine Control Module (ECM)
* Controls all engine electronic systems, including ignition, fuel injection and emissions.
Air conditioning control system
* Controls the operation of the air conditioner, fan, dampers and other components.
Lighting system
* Provides lighting for driving on the road, including headlights, flashlights and turn signals.
Wiper system
* Clears windshield and rear windows of dirt, snow and rain.
Security system
* Includes components such as alarm, immobilizer and airbags.
Comfort systems
* Improve comfort and convenience including power windows, mirrors and seats.
Diagnostic systems
* Alerts the driver to problems in the vehicle’s electrical system using warning indicators and diagnostic codes.