8. Exhaust Gas Recirculation (EGR) System Test

8. Exhaust Gas Recirculation (EGR) System Test

Purpose:

The purpose of this test is to make sure the EGR system is operating correctly.

EGR System Test

^ Check the EGR actuator connectors
^ Check the EGR actuator circuitry.






Recommended Procedure:

^ Connect the scan tool.
^ Engine at operating temperature.
^ Key ON engine OFF.

Note: Refer to the scan tool operating manual for instructions.

^ Access the EGR System Test on the scan tool.
^ Carry out the EGR System Test and follow the directions on the scan tool.
^ If there are no DTCs present all tests pass and all PIDs displayed are in range the system is operating correctly at this time. Clear the DTCs repeat the self-test.
^ If any of the tests do not pass refer to the pinpoint test that corresponds to the PID that is out of range.

Possible Causes:

^ EGR flow related components and circuitry
^ PCM

Tools Required:

Scan tool