Duty Solenoid Vacuum Valve: Turbo

Remove vacuum valve hose at vacuum chamber. Remove vent valve hose at air cleaner. Remove vacuum hose at EGR control valve. Blow through vacuum hose and ensure air does not pass through valve. Disconnect duty solenoid valve connector. Apply battery power to terminal "B" and ground terminal "A". See Figure . Blow through vacuum hose and ensure air passes through valve. Replace duty solenoid valve if defective.