The Diagnostic Process


Statement: Enrollment in this class requires that you first purchase and complete the steps for the required eBook. Next step: Please ensure you have purchased and completed the prerequisite eBook class. Once the prerequisite is marked as complete, you will be able to enroll in this class.

About this course:

This course will update the Technician's knowledge and understanding of modern-day diesel vehicles. It covers the theory, operation, and diagnostic processes of diesel engines. Additionally, the course provides an in-depth knowledge of new technologies that lower emissions through a new generation of aftertreatment emission control systems.

Subjects covered include:

CHAPTER SUMMARY:

The Eight-Step Diagnostic Procedure and Scan Tools 

Retrieval of Diagnostic Information and Troubleshooting Using Diagnostic Trouble Codes 

DLC Locations, OBD-II Diagnosis, OBD-II Active Tests, and No-Code Diagnosis

Determining the Root Cause of Repeated Component Failures

Manufacturer’s Diagnostic Routines and Verifying the Repair

Road Test (Drive Cycle) and Diesel OBD-II Monitor Readiness 

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OBJECTIVES: 

List the steps of the diagnostic process.

Discuss the type of scan tools that are used to assess vehicle components. 

Describe how to retrieve diagnostic information from a vehicle.

Explain the troubleshooting procedures to follow if a diagnostic trouble code has been set. 

Describe diagnostic trouble code retrieval, diagnosis, and testing for OBD-II vehicles. 

Explain the troubleshooting procedures to follow if no diagnostic trouble code has been set.

List the steps in most manufacturers' diagnostic routines.

Describe how to verify the repair and conduct a universal drive cycle. 

Mark Keiser


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