The engine system of almost all cars produced for about 30 years is controlled by a computer. This is called the engine control unit (ECU). Diagnostics is a term directly related to the ECU system.
In the past, the failure of cars could not be noticed by the driver until it gave a symptom. However, when the developing computer technology began to be adapted to cars, everything began to change. The sensors on the engine began to constantly check the relevant parts. Data on these parts began to be transferred to the engine control unit (ECU), a kind of computer system. The task of the ECU is to receive data from the electronic sensors located on the top of the vehicle to ensure that the engine operates in the most efficient and accurate way. Every sensor has a code, and the ECU is programmed on top of those codes. For example, the codes associated with the Oxygen sensor are the numbers between P0160 and P0167. These numbers all refer to a related failure of the oxygen sensor. Whether your vehicle has an ECU or not is known by the engine fault sign. If your vehicle has an engine malfunction light or check engine lettering, there is definitely a brain.
What is Diagnostic Technique?
Diagnostics, which means diagnosis in Turkish. It is a term used to detect a malfunction in your vehicle. After the engine malfunction light is lit, your vehicle is connected to the computer via the connection cable. All fault codes are called diagnostic code lists, or OBD-2 fault codes for short. The codes that appear during the connection of the computer give information about the direct source of the fault.
How is the Diagnostic Technique Applied?
Cars have an ECU connection port in the glove box or on the left side of the steering wheel. However, before performing this scan, it is imperative that there is a program with OBD-2 fault codes applied to the computer. First of all, the engine is started and the make, model and model year of the vehicle are selected before the computer. Then the engine specifications are marked. After scanning the computer for a while, the malfunctions in your vehicle begin to appear on the screen. Your master learns the source of the malfunction by interpreting these codes. In the past, the codes were published in English, but today they are now Turkishized. So even you can know what diagnostic codes mean. In addition, with the developing technology, you can scan diagnostics with fault codes applications that can be downloaded even from phones.