0315866 JOHNSON STOP LINK, Port

Active Diagnostic Codes
An Active diagnostic code represents a problem with the electronic control system. This problem should be corrected as soon as possible. When an active diagnostic code is generated, a display module such as the Electronic Monitoring System (EMS) may produce a warning.Logged Diagnostic Codes
When the ECM generates a diagnostic code the ECM logs the code in permanent memory. The ECM has an internal diagnostic clock. The ECM will record the hour of the first occurrence of the diagnostic code. The ECM will record the hour of the last occurrence of the diagnostic code. The ECM will record the number of occurrences of the code. This information is a valuable indicator for troubleshooting intermittent problems. Some diagnostic codes may log occurrences that did not result in complaints. The most likely cause of an intermittent problem is a faulty connection or damaged wiring. The next likely cause is a component failure. The least likely cause is the failure of the ECM. Diagnostic codes that are logged repeatedly may indicate a problem that needs special investigation.If the symptoms continue, use the proper procedure for troubleshooting the symptoms that have been experienced by the operator.Note: Always clear logged diagnostic codes after investigating and correcting the problem which generated the code.
Illustration 1 g00592364
The diagram indicates output voltage from the Coolant Temperature Sensor. The Cat ET can be used to turn ON the engine monitoring for a specific sensor. When the monitoring is turned ON the sensor's value and any diagnostic event will appear on an electronic monitoring module or on the Cat ET. When the features are turned OFF, the engine monitoring will be disabled, but the event is logged in the ECM.Diagnostic Terminology
Table 1
3500B System Diagnostic Codes    
CID (1)    FMI (2)    Description    
0001     05     Injector Cylinder 1 open circuit    
0001     06     Injector Cylinder 1 short    
0002     05     Injector Cylinder 2 open circuit    
0002     06     Injector Cylinder 2 short    
0003     05     Injector Cylinder 3 open circuit    
0003     06     Injector Cylinder 3 short    
0004     05     Injector Cylinder 4 open circuit    
0004     06     Injector Cylinder 4 short    
0005     05     Injector Cylinder 5 open circuit    
0005     06     Injector Cylinder 5 short    
0006     05     Injector Cylinder 6 open circuit    
0006     06     Injector Cylinder 6 short    
0007     05     Injector Cylinder 7 open circuit    
0007     06     Injector Cylinder 7 short    
0008     05     Injector Cylinder 8 open circuit    
0008     06     Injector Cylinder 8 short    
0009     05     Injector Cylinder 9 open circuit    
0009     06     Injector Cylinder 9 short    
0010     05     Injector Cylinder 10 open circuit    
0010     06     Injector Cylinder 10 short    
0011     05     Injector Cylinder 11 open circuit    
0011     06     Injector Cylinder 11 short    
0012     05     Injector Cylinder 12 open circuit    
0012     06     Injector Cylinder 12 short    
0091     08     Throttle Position signal abnormal    
0094     02     Fuel Pressure misinstalled    
0094     03     Fuel Pressure open/short to +batt    
0094     04     Fuel Pressure short to ground    
0094     13     Fuel Pressure calibration required    
0100     02     Engine Oil Pressure out of range    
0100     03     Engine Oil Pressure open/short to +batt    
0100     04     Engine Oil Pressure short to ground    
0100     13     Engine Oil Pressure calibration required    
0101     03     Crankcase Pressure open/short to +batt    
0101     04     Crankcase Pressure short to ground    
0101     13