Suzuki DF200/DF225/DF250 V6 4-Stroke Outboards Service Manual, Page 124Get this manual
ENGINE CONTROL SYSTEM
IAC VALVE 1Remove IAC valve(See page 3-69 2When the ignition switch is turned ON and OFF, check that the rotary valve turns to open and returns to closed3If the valve does not turn, check the wiring harness for continuity (between ECM and IAC valve) and connector contact condition1IAC valve
OCV (Oil control valve) 1Remove OCV(See page 3-70 2Check for operating sound (ticking sound) when battery voltage applied to and removed from the terminals of oil control valve3Check resistance between the two OCV terminalsOCV resistance: 6.0 8.0