Suzuki outboard motors 1988 2003 repair manual., Page 111Get this manual
FUEL SYSTEM 4-49 location of the problem can be determined by the flashing light sequence of the monitor LED as shown in the illustrationFAIL SAFE EMERGENCY BACKUP
When any of the ECU system fails, the self-diagnostic system will indicate the failure location by means of the indicator lamp's flashing codeIn the event of such failure condition, another system, called back-up system, will come into operationThis system provides alternative signals to compensate for the ECU or sensor failure so that the engine will not stop operating but will be continuously operableBecause of this provision, emergency, return-to-port operation will be possible, but in much reduced performance modeDIAGNOSIS PROCEDURE
1Turn on the ignition switch2Check the "check engine" LED flashing sequence and count the number of flashesFrom the observed flashes, determine which one of the following codes it corresponds toFailure location Signal system within unit itself Throttle sensor signal system Cylinder wall temperature sensor signal system Air temperature sensor signal system Atmospheric pressure sensor signal systemCode Constant ONFlashing modeCheck point Replace the unit Wiring harness