2009-2010 Suzuki DF70A DF80A DF90A Outboard Service Manual, Page 214Get this manual
1H-5 Ignition System:
Ignition System Troubleshooting
Before starting the troubleshooting, make sure that: There is not self-diagnostic code indication Emergency stop switch plate is set in placePerform the following ignition system tests when the engine is hard to start in order to determine if the cause is in the ignition or another systemStep Action Yes Check the ignition system connector for poor connectionsIs Go to step 2there connection in the ignition system connectors? Check spark conditionGo to step 33 Check if the spark plugs are in good conditionGo to step 44 Check ignition coil assembly power supply and ground circuits for open and shortAre circuits in good condition? Check ignition coil operating signalIs result OK? Go to step 5Go to step 6
Z9J0111804002
No Poor connection of connectorsNo or weak sparksReplace spark plug with new oneRepair or replaceCheck ignition coil operating signal wire for open, short and poor connection Faulty ignition switch Faulty ECM main relay Broken wire harness or poor connection of related circuit connector Check air gap between CKP sensor and flywheel reluctor bars Adjust CKP sensor air gap Replace CKP sensor or flywheel Check CMP sensor Check CMP sensor trigger vane Replace CMP sensor or ExcamshaftSubstitute known good ECM, then repeat step 2Check input signals related to this system