Jul 19, 2024  
2023-2024 Catalog 
2023-2024 Catalog Archived

DHM 121 - Introduction to Diagnostic Testing

Lecture Hours: 2 Lab Hours: 0 CWE Hours: 0 Credits: 2

Description: This course is an introduction to basic theory and practical application of diagnostic testing equipment in trouble-shooting procedures. Content includes the study of diagnostic software and generic diagnostic readers for all major engine manufacturers.

Prerequisite(s): Take DHM 159  or CWE 113  and DHM 173  
Course Topics:
  • Scan tool operation
  • Diagnostic processes


Textbook information can be found on the Book Inn website
Grading System:
An overall grade of C or higher is required for transferability.

A =  90 - 100
B =   80 - 89
C =   70 - 79
D =   60 - 69
F =     0 - 59

Student Learning Outcomes:
  1. Demonstrate proper use of a scan tool to retrieve diagnostic codes.
  2. Demonstrate proper use of a scan tool to perform bilateral controls.
  3. Interpret and explain hydraulic and/or pneumatic schematics.
  4. Perform the symptom, to system, to component, to cause diagnostic process.
  5. Demonstrate operation of a various test equipment such as pressure gauges and oscilloscopes.

For SCC Online Courses:
If the course you are taking is online, please review the SCC Online Course Policies   that include:

  • Identity Verification
  • Required materials for all online courses
  • Mandatory Attendance Requirement
  • Orientation and Support
  • Proctored Exams

Standard SCC Course Policies:
Please review the Standard Course Policies   on the following topics:

  • Academic Integrity
  • Add/Drop period
  • Attendance
  • Classroom Conduct
  • Equal Access
  • IT Access
  • Online Behavior
  • Online Confidentiality
  • Services For Students with Disabilities
  • Student Concerns
  • Student Help Services
  • Withdrawals

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Official Course Syllabus