Anyone with the dedicated device can read and analys the Volvo S40 computer, with little training, knowledge and practice, can easily detect most of the faults on your Volvo S40 . In this article today, we will learn how to check out the faults on the Volvo S40 by knowing what tools you need to check, where to find them, how to check the Volvo S40 PC or even the Volvo S40 mobile and connectivity To the vehicle computer.
Vehicle computer
The most common thing that people do not know is that cars from 1996, the newer generations contain mini computers, and these mini computers represent the driving mind in the car, where this computer can analyze and know all problems and failures in the car engine and most other parts. Because it's easy to check your car with your computer or with mobile devices, it's easier and more accurate to count on the car that can make your Volvo S40 in just a few seconds, making it easy to keep your mentainance routine.
When does the need to check your computer for the Volvo S40?
The need to check the vehicle with the computer appears in several cases, the most important of which are:
- Before you buy a used car, you must surely check it by computer, as well as have it checked by a professional.
- When the Check Engine warning symbol is displayed, “Check engine”, which is usually yellow or orange, and the engine symbol.
- If you suspect a problem due to erratic or faulty Volvo S40.
- If a computer memory reset is required after servicing a specific part connected to the vehicle computer.
How the Volvo S40 Screer works
The vehicle treadjust is based on the fault that has been recorded by the vehicle computer, resulting from a failure of a vehicle engine component such as sensors. As these sensors were previously recorded inside the vehicle's computer in the form of a software-shaped pattern if one of the values sent by the sensor differs from the values previously stored in the vehicle's computer memory, an error is recorded in this sensor without the cause of the failure. That is, it only tells you that there is a particular fault. When Anta installs the tare device and connects it to the vehicle computer , reads what the vehicle computer has recorded, and a check program performs the task of translating the registered fault into a code into a language that you understand.
Tools required to check your computer's Volvo S40
1-Check Device, or OBD II Reader, called the – (ELM327). 
This device is a connection to the PC and there are three versions of this device as needed or as desired, namely , a USB connection for direct connection to the Bluetooth or WiFi connection and can connect the Volvo S40 with the mobile phone To get engine updates momentarily on your mobile screen.the original part of this device can be purchased from this site.”note this connection you can use for most vehicle types”
2-the software for viewing and analyzing these problems and codes and there are many programs available on mobile devices and computers, but we recommend the TOAD-Pro Windows OBD Software , the best software in the industry, where it can identify and analyze all the fault codes, which is not available in the latest software or on mobile devices and can be obtained With gifts 17 professional fault analysis and code programs here .
Steps to check your computer's Volvo S40
Before performing a vehicle inspection, the vehicle's use manual should be consulted for ease of inspection and to ensure that it is properly completed, and therefore:
- Searching for computer exits inside the vehicle, which are often under the vehicle's steering wheel in the footwell, but can vary in location from a second vehicle; Therefore, the vehicle's usage guide is important.
- The vehicle computer exits are a rectangular cable and has a multi-slot cable, with up to 16 slots.
- Connect the diagnostic device connection.
- Switch on the cart switches, so that they are in standby mode; Electrical systems inside the cart are enabled.
- Engine operation, if required, depending on vehicle quality.
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1- Connect to Volvo S40
Before you perform the inspection, it is best to read the inspection device's manual, and then:
- Find the exit for the vehicle computer, usually located under the vehicle's steering wheel at the driver's feet, and its exact location varies from vehicle to vehicle, so read the vehicle's manual for further information.
- The plug-in ( plug-in) is a rectangular, 16-hole outlet.
check a car
- Connect the ELM327 connection .
- Operate the vehicle switch to the ready position, which is the stage that will make the vehicle's electrical systems operational.
- On some vehicles you need to start the engine.
- Connect the link to your laptop, some devices do not require a computer, but are connected to the mobile depending on the model you chose for the ELM327 connection .
2- Read information
The TOAD-Pro program will display the fault code with the explanation of the code and fault caused. If you don't find the code explanation, you can search for it online to find it easily, for example this link contains an explanation and interpretation of more than 5,000 characters.
3- Fault repair
Fix the problem, if the problem is simple on the Volvo S40 and you can resolve it yourself do it without hesitation, if you find it difficult and complex and can't do it, consult a repair professional. Or go to a designated maintenance center with Volvo S40. Automatically after you have fixed the problem, the “Check Engine” alarm will disappear and the alert readings on your vehicle will disappear.
faults that computer detects
Faults that the inspection device can detect electrical faults, such as: Vehicle lights- or contact in the cable harness- or transmission sensors- or treadplates- Fuel control monitoring-and the efficiency of the clerical catalyst- and the recycling of exhaust gases- Heating circuits that warm the instruments (heaters) and O2 sensors- as well as the oxygen sensor data.
Easily accessible is the location, part or sensor of the Volvo S40.
check a car
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