Hands-On Learning, Powering America Forward

Diagnosing Issues in CAN-BUS Network 

 

Content Type icon

CONTENT TYPE

VR, ILV,  Interactive Modules

Duration icon

DURATION

4 Hours

Target Audience icon

TARGET AUDIENCE

Technician

Course Delivery icon

COURSE DELIVERY

VR and Web-based

Credits icon

Credits : 0.4

Automotive Service Excellence logo

Icons representing a four-step workflow: Learn, Assess, Evaluate, and Implement

 

About the Course:

This Diagnosing Issues in CAN-BUS Network microcredential trains technicians to identify, diagnose, and troubleshoot communication faults within a vehicle’s Controller Area Network (CAN-BUS). 

Learners will practice real-world diagnostic procedures including scanning for communication errors, inspecting wiring connections, measuring CAN signal voltage levels, and identifying module communication failures. The course emphasizes safe diagnostic procedures, proper use of scan tools and multimeters, and systematic troubleshooting methods to restore reliable communication between electronic control units (ECUs) in hybrid electric vehicles. These diagnostic skills also support the advanced training provided in our Electric Vehicle Technician Program.

Learning Objectives:

  • Identify common symptoms of CAN-BUS communication failure such as warning lights, module communication loss, or system malfunction.
  • Safely prepare the hybrid vehicle for diagnostic procedures following proper electrical safety protocols.
  • Use diagnostic scan tools to identify CAN communication faults and error codes.
  • Measure CAN-H and CAN-L voltage levels using a multimeter.
  • Inspect CAN wiring, connectors, and termination resistors for faults.
  • Identify failed or non-communicating control modules within the network.
  • Interpret diagnostic results to determine the root cause of network issues.
  • Verify restored communication between vehicle control modules after repairs.

Course delivered via LMS and requires an Oculus VR headset for hands-on VR simulations.

 

Technician diagnosing CAN-BUS network communication faults in a hybrid electric vehicle

 

Workforce Development

Technician inspecting CAN-BUS wiring connectors and termination resistors in a vehicle network

At ImmerseLearn, we equip hybrid and electric vehicle technicians with advanced diagnostic skills required to service modern vehicle communication systems. This microcredential strengthens electronic diagnostic abilities, network troubleshooting skills, and electrical safety awareness through immersive VR practice.

CAN-BUS Network Diagnostics −
Learn how to identify communication failures within the vehicle network by analyzing scan tool data, monitoring CAN signals, and detecting abnormal voltage patterns. Technicians develop the ability to isolate network faults quickly and accurately.
Safe Diagnostic Procedures +
Practice essential safety procedures when working with hybrid vehicle electrical systems, including proper system shutdown, isolation protocols, and safe handling of vehicle electronics during testing and inspection.
Cause Identification +
Determine common causes of CAN-BUS communication issues such as damaged wiring, loose connectors, failed termination resistors, or malfunctioning control modules by interpreting diagnostic readings and system behavior.
Network Repair and Verification +
Apply corrective actions such as repairing wiring faults, replacing faulty components, or restoring proper network termination. Learners complete the process by verifying stable communication across all vehicle control modules and confirming normal vehicle system operation.

By completing this microcredential, technicians will gain the confidence and technical expertise needed to diagnose CAN-BUS network communication problems, resolve system faults, and restore proper functionality in hybrid electric vehicles, while building foundational skills that support advanced learning in our HEV Technician Program.