Title: Inspect and test electrical/electronically operated components and circuits of secondary air-injection systems; determine needed action.
Course: Automotive Technology III (20104-III) > Section: Engine Performance: Emissions Control Systems Diagnosis and Repair

Inspection should include using troubleshooting charts and comparing test results to service materials and manufacturer guidelines.

ASE Education Foundation
2017 Automobile Service Technology (AST) Level
VIII. Engine Performance
E. Emissions Control Systems Diagnosis and Repair
Task 4

Process/Skill Questions:

- When does the air-injection pump run?
- Why are diverter valves not typically used on electrically operated air injection systems?
- What device controls the air-injection pump?