1996-2005 Suzuki DF40, DF50 Four Stroke Outboard Service Manual, Page 380Get this manual
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DF40DF50 "K1" (01) model 13-44
CHART10SELF-DIAGNOSTIC CODE "1-5"
Ignition switch "OFF"Check exhaust manifold tempsensor resistanceIs result OK? (See page 13-35 YES Possible causeECM