KT12 - Check Source Vacuum to IMRC Solenoid

- Manifold vacuum hose at Intake Manifold Runner Control System (IMRC) solenoid disconnected.

- Start engine.

- Check for vacuum at the disconnected manifold vacuum hose.

- Is vacuum present at the hose?

Yes -- Reconnect all components. Return to Diagnosis by Symptom (Diagnostic Routines) for other possible causes of the symptom. Testing and Inspection

No -- Inspect vacuum supply hose to IMRC solenoid. Service as necessary. Rerun quick test. Quick Test Appendix (Detailed Testing Instructions)