ORIFICE 1197833 - Caterpillar

Table 1
J1939 Code and Description Comments
843-9
Operator Control Panel : Abnormal Update Rate The Electronic Control Module (ECM) is not communicating properly with the Operator Control Panel (OCP) over the CAN data link.
The code is logged.
898-9
Engine Requested Speed/Speed Limit : Abnormal Update Rate The ECM is not communicating properly with the OCP over the CAN data link. This code will be present when the desired speed input is set to CAN and communication is lost.
The code is logged.
1442-9
Engine Fuel Valve #1 Position : Abnormal Update Rate The ECM is not communicating with the fuel valve.
The code is logged.
2241-9
Source Address 241 : Abnormal Update Rate(1) The ECM is not communicating with the ISM.
The code is logged.
3216-9
Aftertreatment #1 NOx : Abnormal Update Rate The ECM is not communicating properly with the NOx sensor.
The code is logged.
3542-9
Requested Engine Control Mode : Abnormal Update Rate The ECM is not communicating properly with the OCP over the CAN data link. This code will be present when the engine operating state input is set to CAN input and communication is lost.
The code is logged.
5418-9
Engine Fuel Actuator #1 : Abnormal Update Rate The ECM is not communicating properly with the fuel metering valve over the CAN data link.
The code is logged.
(1) Integrated Sensing Module (ISM) data linkIf Cat® Electronic Technician (ET) will not communicate with the ECM, refer to Troubleshooting, "Electronic Service Tool Does Not Communicate" before you begin this procedure. The procedure will verify that electrical power is being supplied to the ECM and to the service tool connector.The data links are used to communicate information between the engine ECM and other control modules that are a part of the application. Cat ET also communicates with the ECM via the data links.The service tool connector contains connections for electrical power and for the data links.Cat ET may display the following error message:"The version of the ECM is not recognized and the integrity of the changed parameters and displayed data is not guaranteed."This message indicates one of the following conditions:
The flash file in the ECM is newer than the version of Cat ET.
The latest version of Cat ET has not been installed.
Illustration 1 g03792165-9 Detected Problems
An invalid configuration parameter
Software incompatibility between two or more ECM's on the network
Hardware incompatibility between CAN-based system components
Damaged CAN data link wiring
Missing or damage terminating resistor(s)-14 Detected Problems
Incorrect personality module code
An invalid configuration parameter
Software Incompatibility between two or more ECM's on the network
Hardware Incompatibility between CAN-based system components, incorrect module, or display on the data link
Table 2
Troubleshooting Test Steps Values Results
1. Check for Codes
A. Connect Cat® Electronic Technician (ET) to the service tool connector.
B. Determine if a code is active or logged.
Codes
Result: A -9 code is active or logged.
Proceed to Test Step 2.
2. Check the Part Number of the Affected Component
A. Verify that the part number of the affected component is the correct part number for the application.
Part Number
Result: The part number is correct for the application.
Proceed to Test Step 3.
Result: The part number is not correct for the application.
Repair: Replace the affected