This unit describes the skills and knowledge required to diagnose and repair faults in the compression ignition engines of heavy vehicles. The unit involves preparing for the task, sourcing a diagnostic testing strategy, diagnosing the cause of the fault, carrying out the repair, performing post-repair testing, and completing workplace processes and documentation.

The unit applies to those who work in the automotive service and repair industry. The compression ignition engines include those in agricultural machinery, heavy commercial vehicles, mobile plant machinery or marine vessels.

No licensing, legislative, regulatory or certification requirements apply to this unit at the time of publication.