California Council on Diesel Education and Technology

This page last reviewed October 2, 2015

The California Council on Diesel Education and Technology (CCDET) offers courses, through selected California community colleges, that provide an in-depth look at ARB's Heavy-Duty Vehicle Inspection Program (HDVIP) and the Periodic Smoke Inspection Program (PSIP), as well as Diesel Exhaust After-Treatment and Maintenance.
See the CCDET class schedule for a list of current class availability.


Participants in the course receive:

  • Hands-on training on the correct administration of the SAE J1667 Snap Acceleration Smoke Test Procedures for
    Heavy-Duty Diesel Powered Vehicles which is required under both smoke inspection programs;
  • Basic smoke emissions troubleshooting and repair; and
  • Assurance that your technicians will be up-to-date on California s heavy-duty vehicle inspection programs.

For a diesel repair facility that performs smoke testing, CCDET participation will assure your clients that your technician
will correctly administer the snap-acceleration test. This can help prevent their vehicles from receiving citations.

For the fleet owner, CCDET training will assure you that your maintenance technicians will correctly administer the
snap-acceleration test which will help avoid costly penalties. You will also profit from increased fuel savings and get
the maximum use from your vehicles due to proper maintenance.

To ensure quality testing per the specifications of the SAE J1667, the CARB strongly recommends opacity testing
staff attend one of the CCDET college classes and obtain certification.

Diesel Exhaust After-Treatment and Maintenance Training Course (CCDET II):

Diesel exhaust after-treatment technology including wall-flow diesel particulate filters (DPF) and selective catalytic reduction
(SCR) systems are at the forefront of CCDET’s Diesel Exhaust After-treatment Maintenance training covers the following:

  • background on why diesel particulate filters are necessary;
  • how the technology filters particulate matter (PM) and how regeneration strategies such as passive and
    active systems operate;
  • explores how filters might fail as well as preventative maintenance practices to avoid break downs;
  • an overview of SCR systems used on heavy-duty diesel engines.

In addition to these topics, the one day training also includes hands-on shop exercises designed to reinforce maintenance
procedures employed to keep after-treatment technology and the engines they are installed on working at peak performance.

For a list of colleges that are CCDET members and have the qualified instructors and the proper test equipment for your
training, please go to CCDET College Members


Who Are We?

CCDET College Members

HDVIP Program Background

SAE J1667
and Diesel PM