1996-2005 Suzuki DF40, DF50 Four Stroke Outboard Service Manual, Page 344Get this manual
DF40DF50 "K1" (01) model 13-8 SELF-DIAGNOSTIC SYSTEM INDICATION When the abnormality occurs in signal from sensor, switch etc the "CHECK ENGINE" lamp on the monitortachometer flashes (lights intermittently) according to the each code pattern with buzzer soundingPRIORITY FAILED ITEM MAP sensor CODE 3-4 on off on off on off on off on off on off on off on off on off on off on off LAMP FLASHING PATTERN FAIL-SAFE SYSTEM ACTIVATING YES
CKP sensor
IAC valveBy-pass air screw adjustment
CMP sensor
CTP switch