1996-2005 Suzuki DF40, DF50 Four Stroke Outboard Service Manual, Page 438Get this manual
DF4050 "K4" ('04) MODEL 15-10 SELF-DIAGNOSTIC SYSTEM INDICATION When the abnormality occurs in signal from sensor, switch etc the "CHECK ENGINE" lamp on the monitor-tachometer flashes (lights intermittently) according to the each code pattern with buzzer soundingPRIORITY FAILED ITEM CODE LAMP FLASHING PATTERN FAIL-SAFE SYSTEM ACTIVATING YES YES NO YES NO YES YES NO NO YES NO
MAP sensor CKP sensor IAC valveBy-pass air screw adjustment CMP sensor CTP switch Cylinder tempsensor IAT sensor MAP sensor (Sensor hose) Rectifierregulator (Over-charging) Exhaust manifold tempsensor Fuel injector (Open circuit)