5000465 JOHNSON DECAL SET

Table 1
Diagnostic Trouble Codes for the Data Link Circuit    
CDL Code    Description    Notes    
1639-2     Machine Security System Module : Erratic, Intermittent, or Incorrect     The engine ECM detects erratic communications with the Machine Security System (MSS).
The ECM will log the diagnostic code.
The engine will not start.    
1639-9     Machine Security System Module : Abnormal Update Rate     The engine ECM detects a loss of communications with the Machine Security System (MSS).
The ECM will log the diagnostic code.
The engine will not start.    Use this procedure if