1996-2005 Suzuki DF40, DF50 Four Stroke Outboard Service Manual, Page 100Get this manual
3-45 ENGINE CONTROL SYSTEM
CHART11ENGINE CRANKED, BUT NOT START (OR STOPS SHORTLY AFTER STARTING)
Before starting this troubleshooting, make sure thatThere is no self-diagnostic code indication Emergency stop switch plate is set in place 15A fuse is goodSTART
Ignition switch "ON"Check "B5" terminal voltageIs result OK? (See page 3-34CrankingCheck injector operating soundIs result OK? (See page 3-36 NOIgnition switch "OFF"Check fuel injector resistanceIs result OK? (See page 3-35 YESIgnition switch "ON"Check "A7, A8 and A4 terminal voltageIs result OK? (See page 3-34 YESCrankingCheck fuel injector operating signalIs result OK? (See page 3-36 YES Fuel injector failureIgnition switch "ON"Check "B1" terminal voltage for secafter switch ONIs result OK? (See page 3-34 Possible causeFailure of high pressure fuel system components(See page 3-46 NO YES NO NO YES ECM main relay failureIgnition switch "ON"Check "C1" terminal voltage Is result OK? (See page 3-34 YES YESCrankingCheck ignition spark using timing light (Pno09930-76420)Is there light flashing? NO NO Emergency stop switch failure