IA5 - Resonance Chamber Condition
^ Visually check resonance chamber(s) for a pinched hose connection, or for cracks that allow unfiltered air and moisture to enter the system.
^ Check resonance chamber(s) for other damage.
^ Is the resonance chamber(s) free of damage or poor connections?
YES -- Go to IA6. IA6 - Charge Air Cooler Condition and Leakage
NO -- Service or replace the resonance chamber(s).