Title: Diagnose emissions and driveability concerns caused by exhaust gas recirculation (EGR) system; inspect, test, service, replace EGR system sensors, controls, wiring, tubing, exhaust passages, coolers, filters, hoses; determine action.
Course: Automotive Technology III (20104-III) > Section: ENGINE PERFORMANCE: Emissions Control Systems

Procedures should include

- using a five-gas analyzer
- using a scan tool
- interpreting emissions testing results
- troubleshooting charts
- comparing test results to service materials and manufacturer guidelines.

Components should include

- electrical/electronic sensors
- controls
- wiring
- tubing
- exhaust passage
- vacuum/pressure controls
- filters
- hoses of the EGR system.

Process/Skill Questions:

- What might the typical customer complaint be for a stuck-open EGR valve?
- What might be the consequences of having a plugged EGR system?
- What is the function/operation of the EGR system?