Suzuki 2003-2007 DF60 DF70 Outboard Motors Service Manual, Page 98Get this manual
ENGINE CONTROL SYSTEM
CHART 13: UNSTABLE IDLINGTROLLING (OR ENGINE TENDS TO STALL)
Before starting this troubleshooting, make sure that: There is no self-diagnostic code indication
Ignition switch "ON"Check "5" terminal voltageIs result OK? (See page 3-38 YES NO (Always V) (Always V)Individual checkCheck neutral switch functionIs result OK? NO Neutral switch failure
YES ECM failure YES
Ignition switch "ON"Check "24" terminal voltageIs result OK? (See page 3-38 YES