2009-2010 Suzuki DF70A DF80A DF90A Outboard Service Manual, Page 81Get this manual
Engine General Information and Diagnosis: Step Action 1) Check the TPS output voltage changeRefer to "TPS Inspection" in Section 1C (Page 1C-15)Is it in good condition?
Yes No Intermittent trouble, Faulty TPSsubstitute known "R" wire shorted to good ECM and recheck"BrY" wire, "BW" wire open, poor "B W" wire connection, poor "BrY" wire connection, "BrY" wire open or poor TPS connection If the wiring and connection is OK, intermittent trouble or faulty ECM may be the cause