Computer Management System
Checking Codes and Analyzing Data
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| Courtesy of Snap-On Tool Corporation |
When the Malfunction Indicator Warning Indicator or Service Vehicle Soon indicator and a whole host of other dash indicator lamps illuminate on the instrument panel, it is time to bring out the scan tool to give us an indication of what the problem may be. The analyzer that we will focus on in this course is the Ethos scanner made by Snap-On Corporation. This scan tool is a first step scanner. We will be able to read codes in any module system and also read data that is generated by the computer system. To get further specific training from Snap-On you can visit the Snap-On website and sign on as a guest. Click on this hyperlink to bring you to their website.
Use this hyperlink to take you to their training video covering the Ethos scan tool.
This hyperlink will take you to Snap-On’s power point training slide showing the depth training program. Use this training to get step by step understanding of all the specifics about the Ethos scanner. This set of slides will contain the questions to the in class test at the end of the course.
Laboratory Exercise
1. After viewing the Snap-On video and completing the Ethos Scanner Training slide show, secure a vehicle from our fleet with the instructor’s guidance or provide a vehicle of your own with the consent and guidance of your instructor.
2. Complete the repair order that has been pre-written for this procedure; note the directions and questions in the technician notes area.
3. Using the scan tool, scan the vehicle data and complete the data section on the repair order.
4. Using the scan tool scan for any active codes, if there is an indicator on there will usually be at least one active code.
5. Further scan the vehicle for any historical codes; note these codes on the technician notes area clearly marking them as historical.
6. When you have found the code, use the information system in the lab to find the written information for code diagnosis.
7. Follow the instructions to diagnose the code and find the failure of the computer management system.
8. Show the instructor the steps you used to find the failure of your vehicle.
9. Use the scan tool to clear all codes. Re-test vehicle for any codes returning after a test drive.
10. Repair the vehicle; complete the repair order, including charges for labor and parts, turn in your repair order.
11. Return the vehicle to the fleet parking lot.
"Mac" 10/11
"Mac" 10/11
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