Before the use of computerized controls, fixing an automobile was straightforward and logical.

So, Gasoline engines need the proper fuel and air mixture, compression to squeeze the mixture together, and a spark plug to ignite the mixture.

Therefore, A modern car’s Engine Management System consists of a wide range of electronic and electrical components:

  • Sensor
  • Relays
  • Actuators

As a result, They all work together to provide the car’s Engine Control Unit with vital data parameters essential to govern various engine functions effectively.

Also, Sensor are electro-mechanical devices that monitor various engine parameters.

Furthermore, An engine uses different types of sensor which primarily consists of:

  • Thermocouple
  • Resistance Temperature Detectors (RTDs)
  • Hall Effect sensor

In addition, To fulfill the task of capturing and transmitting data, sensor need to be resistant to temperature, moisture, dirt and chemicals. They also need to function perfectly within electromagnetic fields and in the presence of other sensor, in addition to offering a long service life.

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Some Important Sensors Include:

  • Camshaft sensor (CMP)
  • Crankshaft sensor (CKP)
  • Knock sensor (KS1 and KS2)
  • Intake Air Sensor (IAT)
  • Engine Coolant Temperature (ECT) sensor
  • Manifold Absolute Pressure (MAP) sensor
  • Mass Air Flow (MAF) sensor
  • Throttle Position (TP) sensor

Since all the sensors connect to the electronic control unit (ECU), it can also monitor them for malfunction. Consequently, The electronic control unit (ECU) collects signals from faulty sensor and stores them in the electronic control unit (ECU) memory. You can diagnose these faults either by reading the electronic control unit (ECU) memory with the help of ‘fault codes’ or thru’ sophisticated engine diagnostic equipment supplied by the vehicle manufacturers.