888631 1 Mercury PLUG

Table 1
J1939 Code and Description CDL Code and Description Comments
639-9
J1939 Network #1 : Abnormal Update Rate 247-9
SAE J1939 Data Link : Abnormal Update Rate Communication has been lost to one of the devices on the datalink.
If multiple devices are not communicating, there is likely a problem with the datalink.
639-14
J1939 Network #1 : Special Instruction 247-14
SAE J1939 Data Link : Special Instruction The affected Electronic Control Module (ECM) is missing expected parameters.
1231-9
J1939 Network #2 : Abnormal Update Rate 2348-9
SAE J1939 Data Link #2 : Abnormal Update Rate Communication has been lost to one of the devices on the datalink.
If multiple devices are not communicating, there is likely a problem with the datalink.
1231-14
J1939 Network #2 : Special Instruction 2348-14
SAE J1939 Data Link #2 : Special Instruction The affected ECM is missing expected parameters.
1235-9
J1939 Network #3 : Abnormal Update Rate 5856-9
SAE J1939 Data Link #3 : Abnormal Update Rate Communication has been lost to one of the devices on the datalink.
If multiple devices are not communicating, there is likely a problem with the datalink.
1235-14
J1939 Network #3 : Special Instruction 5856-14
SAE J1939 Data Link #3 : Special Instruction The affected ECM is missing expected parameters.
2853-9
Communications Connection : Abnormal Update Rate N/A Communication has been lost to one of the devices on the datalink.
If multiple devices are not communicating, there is likely a problem with the datalink.
3360-9
Aftertreatment #1 DEF Controller : Abnormal Update Rate 3820-9
Aftertreatment #1 DEF Controller #1 : Abnormal Update Rate The #1 Diesel Exhaust Fluid Control Unit (DCU) triggered a CAN communication diagnostic code and shutdown the SCR system.
3360-14
Aftertreatment #1 DEF Controller : Special Instruction 3820-14
Aftertreatment #1 DEF Controller #1 : Special Instruction The #1 DCU triggered a CAN communication diagnostic code and shutdown the SCR system.
4450-9
Aftertreatment #2 DEF Controller : Abnormal Update Rate 4577-9
Aftertreatment #2 DEF Controller #1 : Abnormal Update Rate The #1 DCU triggered a CAN communication diagnostic code and shutdown the SCR system.
4450-14
Aftertreatment #2 DEF Controller : Special Instruction 4577-14
Aftertreatment #2 DEF Controller #1 : Special Instruction The #1 DCU triggered a CAN communication diagnostic code and shutdown the SCR system.
7538-9
Aftertreatment #1 DEF Controller #2 : Abnormal Update Rate 4797-9
Aftertreatment #1 DEF Controller #2 : Abnormal Update Rate The #2 DCU triggered a CAN communication diagnostic code and shutdown the SCR system.
7538-14
Aftertreatment #1 DEF Controller #2 : Special Instruction 4797-14
Aftertreatment #1 DEF Controller #2 : Special Instruction The #2 DCU triggered a CAN communication diagnostic code and shutdown the SCR system.
7539-9
Aftertreatment #2 DEF Controller #2 : Abnormal Update Rate 4798-9
Aftertreatment #2 DEF Controller #2 : Abnormal Update Rate The #2 DCU triggered a CAN communication diagnostic code and shutdown the SCR system.
7539-14
Aftertreatment #2 DEF Controller #2 : Special Instruction 4798-14
Aftertreatment #2 DEF Controller #2 : Special Instruction The #2 DCU triggered a CAN communication diagnostic code and shutdown the SCR system.
Table 2
Associated Codes
J1939 Code CDL Code Troubleshooting Procedure
5965-5 3838-5 Troubleshooting, Solenoid Valve - Test (Aftertreatment)
5965-6 3838-6 Troubleshooting, Solenoid Valve - Test (Aftertreatment)
5966-6 3965-6 Troubleshooting, Solenoid Valve - Test (Aftertreatment)
7602-2 5028-2 Troubleshooting, Diesel Exhaust Fluid Controller Resistor - Test
7602-3 5028-3 Troubleshooting, Diesel Exhaust Fluid Controller Resistor - Test
7602-4 5028-4 Troubleshooting, Diesel Exhaust Fluid Controller Resistor - Test
7603-2 5029-2 Troubleshooting, Diesel Exhaust Fluid Controller Resistor - Test
7603-3 5029-3 Troubleshooting, Diesel Exhaust Fluid Controller Resistor - Test
7603-4 5029-4 Troubleshooting, Diesel Exhaust Fluid Controller Resistor - Test If the Cat® Electronic Technician (ET) will not communicate with the Electronic Control Module (ECM), refer to Troubleshooting, "Electronic Service Tool Does Not Communicate" before you begin this procedure. The procedure verifies that electrical power is being supplied to the ECM and to the service tool connector.The "System Communication Status" is located under the diagnostics tab in Cat ET. Click the "System Communication Status" option. Once the screen opens up, the information will automatically be loaded from the ECM. If there is an issue with the datalink and the datalink is repaired, the "Load from ECM" button will have to be clicked again to see the updated status. If there are communication issues between multiple modules, each module can be selected individually to determine which components are having communication issues. If the problem is intermittent, the "View History" button can be clicked to see all the communication faults that have previously logged.
Table 3
Cat ET Diagnostic Code Cross Reference to Wiring Schematic
Code Description Data Link
J1939 Network #1 Can A
J1939 Network #2 Can B
J1939 Network #3 Can C
Table 4
Required Tools
Part Number Part Name Qty
372-5260 Test Kit 1
Illustration 1 g06080139
Illustration 2 g06080804
Table 5
Troubleshooting Test Steps Values Results
1. Check for Codes
A.