KIT (seal) 9J5111 - Caterpillar

Use this procedure to troubleshoot a problem with the data link system. Also, use this procedure if one of the following diagnostic codes is active or easily repeated.
Table 1
J1939 Code and Description CDL Code and Description Comments
625–9
Proprietary Data Link : Abnormal Update Rate N/A N/A
639-9
J1939 Network #1 : Abnormal Update Rate 247-9
SAE J1939 Data Link : Abnormal Update Rate Communication has been lost to one or more of the devices on the datalink. If multiple devices are not communicating, there is likely a problem with the data link wiring, power, or ground circuits.
639-14
J1939 Network #1 : Special Instruction 247-14
SAE J1939 Data Link : Special Instruction The affected 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 or more of the devices on the datalink. If multiple devices are not communicating, there is likely a problem with the data link wiring, power, or ground circuits.
Note: This code will log on the aftertreatment ECM if the Emergency Fuel Cutoff (EFCO) switch is used to shutdown the engine.
1231-14
J1939 Network #2 : Special Instruction 2348-14
SAE J1939 Data Link #2 : Special Instruction The affected ECM is missing expected parameters.
4193-9
Engine Coolant Pump Outlet Temperature : Abnormal Update Rate 2854-7
Coolant Temperature Control Module : Not Responding Properly N/A
4193-14
Engine Coolant Pump Outlet Temperature : Special Instruction 2349-14
Engine Coolant Pump Outlet Temperature Sensor : Special Instruction N/A
Table 2
Cat® ET Diagnostic Code Cross Reference to Wiring Schematic
Code Description Data Link
J1939 Network #1 Can A (Global)
J1939 Network #2 Can B (Local) Refer to the main engine Schematic, UENR7142 when troubleshooting the Data Link-Test.-9 Detected Problems:Device 1 is unable to communicate on the data link.
Device 1 cannot communicate with other Devices on the data link, but can communicate with the service tool, indicating a problem with the data link wiring.Device 1 is unable to communicate with Device 2 on the data link.
Device 1 cannot communicate with Device 2, indicating a problem with the data link wiring, power or ground circuit, or Device 2.-14 Detected Problems:Device 1 is unable to obtain a network address on the data link.
Device 1 is trying to claim the same address as another Device. An example of this is two Devices being configured the same.Device 1 detects a failed address claim from Device 2 on the data link.
Device 1 detects that Device 2 is trying to claim the same address as another Device.Device 1 is not receiving all expected parameters from Device 2 on the data link.
A component is configured as installed in the ECM, but is not installed on the application.
The incorrect component is installed.
The incorrect software file has been installed.
Illustration 1 g06320023
Table 3
Troubleshooting Test Steps Values Results
1. Check for Codes
A. Connect Cat® Electronic Technician (ET) to the service tool connector.
B. Look for active codes that are associated with the system for the diagnostic code.
Codes
Result: A 4193-9 code is present.
Proceed to Test Step 11.
Result: A 4193-14 is present code.
Proceed to Test Step 3.
Result: A 639-9, 1235-9 639-9, 639-14