1996-2005 Suzuki DF40, DF50 Four Stroke Outboard Service Manual, Page 302Get this manual
11-11 DF40QHDF50QH
ENGINE CONTROL SYSTEM
The engine control systems such as ignition and fuel injection are basically the same as DF4050T model specification except for the following:
CautionDiagnostic System
Caution and Diagnostic system operator alert signals are audio only on QH modelsAlerts will be signaled by sound sequence from the caution buzzer contained in the tiller handleWhen any caution system is activated, the diagnostic code buzzer sound sequence for that caution will be the same as that of T- specification modelRefer to the illustration for the QH model buzzer sound sequence (ONOFF pattern) of caution and diagnostic signals