803793 1 Mercury CAP, Cowl

Cat Data Link
The Cat Data Link is used by the engine ECM to communicate with Caterpillar controllers or display modules. Cat ET is a software program that is designed to run on a personal computer. The software can be used by the service technician to view the diagnostic code information that is generated by the engine ECM. The diagnostic code is displayed as a two-element code. The following terms describe the elements of the code:Component Identifier (CID) - The CID indicates the component that generated the code.Failure Mode Identifier (FMI) - The FMI indicates the type of failure.CAN data link
The CAN data link is used by the engine ECM to communicate with aftermarket controllers or display modules. The CAN data link is referred to as the J1939 data link. When a diagnostic code is activated, the ECM can transmit information about the diagnostic code over the J1939 data link to aftermarket controllers. The diagnostic code will be displayed as a two-element code. The following terms describe the elements of the code:Suspect Parameter Number (SPN) - The SPN is a code which is assigned to each component to identify data via the data link to the ECM.Failure Mode Identifier (FMI) - The FMI indicates the type of failure.Refer to Table 1, Table 2, and Table 3 for a complete list of the diagnostic codes and the appropriate troubleshooting procedures. Further explanations of diagnostic codes are explained after Table 2.Cross-Reference Information for Diagnostic Codes that are Generated by the Engine ECM
Table 1 and Table 2 are lists of the diagnostic codes that are generated by the engine ECM. The diagnostic codes are cross-referenced with the appropriate procedure that can be used to troubleshoot the code.Portions of this material are reprinted with permission from SAE J1939DA_201607© 2016 SAE International. SAE International is not responsible for any use or translation of this material, in whole or in part. Please contact SAE International to obtain a complete copy of SAE J1939DA_201607, the official definitive source of this standard.CID-FMI Code to SPN-FMI Code to the Appropriate Test Procedure
Table 1
Cross-Reference from CID-FMI Code to SPN-FMI Code to the Appropriate Circuit Test
MID No. 036
Diagnostic Code and Description SPN-FMI Code and Description Troubleshooting Procedure
1-2 Cylinder #1 Injector : Erratic, Intermittent, or Incorrect 651-2 Engine Injector Cylinder #01 : Erratic, Intermittent, or Incorrect Troubleshooting, "Injector Solenoid - Test"
1-5 Cylinder #1 Injector : Current Below Normal 651-5 Engine Injector Cylinder #01 : Current Below Normal Troubleshooting, "Injector Solenoid - Test"
1-6 Cylinder #1 Injector : Current Above Normal 651-6 Engine Injector Cylinder #01 : Current Above Normal Troubleshooting, "Injector Solenoid - Test"
1-7 Cylinder #1 Injector : Not Responding Properly 651-7 Engine Injector Cylinder #01 : Not Responding Properly Troubleshooting, "Fuel Systems Verification - Test"
1-13 Cylinder #1 Injector : Out of Calibration 651-13 Engine Injector Cylinder #01 : Out of Calibration Troubleshooting, "The injector trim file on the primary ECM does not match the injector trim file on the secondary ECM"
2-2 Cylinder #2 Injector : Erratic, Intermittent, or Incorrect 652-2 Engine Injector Cylinder #02 : Erratic, Intermittent, or Inc Troubleshooting, "Injector Solenoid - Test"
2-5 Cylinder #2 Injector : Current Below Normal 652-5 Engine Injector Cylinder #02 : Current Below Normal Troubleshooting, "Injector Solenoid - Test"
2-6 Cylinder #2 Injector : Current Above Normal 652-6 Engine Injector Cylinder #02 : Current Above Normal Troubleshooting, "Injector Solenoid - Test"
2-7 Cylinder #2 Injector : Not Responding Properly 652-7 Engine Injector Cylinder #02 : Not Responding Properly Troubleshooting, "Fuel Systems Verification - Test"
2-13 Cylinder #2 Injector : Out of Calibration 652-13 Engine Injector Cylinder #02 : Out of Calibration Troubleshooting, "The injector trim file on the primary ECM does not match the injector trim file on the secondary ECM"
3-2 Cylinder #3 Injector : Erratic, Intermittent, or Incorrect 653-2 Engine Injector Cylinder #03 : Erratic, Intermittent, or Incorrect Troubleshooting, "Injector Solenoid - Test"
3-5 Cylinder #3 Injector : Current Below Normal 653-5 Engine Injector Cylinder #03 : Current Below Normal Troubleshooting, "Injector Solenoid - Test"
3-6 Cylinder #3 Injector : Current Above Normal 653-6 Engine Injector Cylinder #03 : Current Above Normal Troubleshooting, "Injector Solenoid - Test"
3-7 Cylinder #3 Injector : Not Responding Properly 653-7 Engine Injector Cylinder #03 : Not Responding Properly Troubleshooting, "Fuel Systems Verification - Test"
3-13 Cylinder #3 Injector : Out of Calibration 653-13 Engine Injector Cylinder #03 : Out of Calibration Troubleshooting, "The injector trim file on the primary ECM does not match the injector trim file on the secondary ECM"
4-2 Cylinder #4 Injector : Erratic, Intermittent, or Incorrect 654-2 Engine Injector Cylinder #04 : Erratic, Intermittent, or Incorrect Troubleshooting, "Injector Solenoid - Test"
4-5 Cylinder #4 Injector : Current Below Normal 654-5 Engine Injector Cylinder #04 : Current Below Normal Troubleshooting, "Injector Solenoid - Test"
4-6 Cylinder #4 Injector : Current Above Normal 654-6 Engine Injector Cylinder #04 : Current Above Normal Troubleshooting, "Injector Solenoid - Test"
4-7 Cylinder #4 Injector : Not Responding Properly 654-7 Engine Injector Cylinder #04 : Not Responding Properly Troubleshooting, "Fuel Systems Verification - Test"
4-13 Cylinder #4 Injector : Out of