Suzuki 2003-2007 DF60 DF70 Outboard Motors Service Manual, Page 95Get this manual
ENGINE CONTROL SYSTEM
CHART 6: SELF-DIAGNOSTIC CODE "1-4"
Ignition switch "OFF"Check cylinder tempsensor resistanceIs result OK? (See page 3-39 YES Possible cause: ECM failure Wire continuityconnection failure NO Cylinder tempsensor failure