S8 - Check EGR Vacuum

- Disconnect vacuum line at EGR valve, and plug the vacuum line.

- Start engine.

NOTE: When verifying drive symptom, a Diagnostic Trouble Code (DTC) may be stored in memory; erase Continuous Memory after performing this procedure. Clearing Diagnostic Trouble Codes

- For Drive Symptom: Was drive symptom eliminated?

Yes -- For CD4E and California manual transmission: Go to DD31. DD31 - Check EGR Valve Vacuum Hose

For 49 State manual transmission: Go to Emission Control Section to check EGR system.

No -- Go to S9. S9 - Check EGR Valve