KE20 - Check For Proper Engine Coolant Flow to IAC-BPA Valve

- Verify that engine coolant is warming up properly.

- Check for proper engine coolant level.

- Check engine coolant hoses to and from the Idle Air Control-Bypass Air (IAC-BPA) valve for kinks, leaks, blockage, etc.

- Are the above checks OK?

Yes -- Remove IAC-BPA solenoid and Inspect for contamination.

Clean as necessary. Rerun quick test. Quick Test Appendix (Detailed Testing Instructions)

If no contamination is present or if Diagnostic Trouble Code (DTC)/symptom is still present, replace IAC-BPA solenoid. Rerun quick test. Quick Test Appendix (Detailed Testing Instructions)

No -- Service as necessary. Remove breakout box. Reconnect PCM.