AIS14 - Check Both Lt and Rt Bank IMRC Function at High RPM

^ Note the position of the IMRC vacuum actuator(s) linkage and lever mechanism with the engine at idle.

^ Increase engine to 3500 rpm while observing linkage/lever.

^ Did the linkage/lever on both left and right bank move as engine rpm was Increased from low rpm to high rpm?

YES -- IMRC system is functioning properly. Turn engine off. Return to Diagnostic Routines for other possible causes.

NO -- Leave engine running. Go to AIS15. AIS15 - Check For Vacuum Signal at IMRC Solenoid Outlet Port