ROD 9D4572 - Caterpillar

Graphical Display
The following is a list of Diagnostic Trouble Codes (DTCs) that are associated with the CAN data link of the machine.
Table 1
Graphical Display (MID 053)
DTC Code Description System Response
967-02 Machine Application: Erratic, Intermittent, or Incorrect Machine components that directly communicate on this link will be unavailable. See electrical schematic.
967-09 Machine Application: Abnormal Update Rate Machine components that directly communicate on this link will be unavailable. See electrical schematic.
2348-09 SAE J1939 Data Link #2: Abnormal Update Rate Machine components that directly communicate on this link will be unavailable. See electrical schematic. Each CAN data link circuit is an input and output of select electronic control modules. The data link consists of internal control circuits and the connecting harness wiring. The CAN data link is designed to carry communications between the electronic control modules.Possible causes for an FMI 02 diagnostic code are:
Intermittent Data Link connection.
The machine harness connectors are in need of repair or replacement.
All the part numbers are not correct.Possible Causes for an FMI 09 diagnostic code are:
The wrong software is installed on an ECM.
Product ID has not been programmed on the machine ECM or is invalid.
The Graphical Display is operating intermittently.
Terminating resistors on the J1939 data link are faulty.
There is an open or a poor connection in the data link circuit.
There is a short in the data link circuit.
There is excessive noise on the data link circuit.
The machine ECM is not powering up or powering down properly.
There is a lack of key switch input on the machine ECM.
The machine ECM has failed. This condition is unlikely.Note: A loss of power to an ECM can cause the Graphical Display to activate this diagnostic code combination. Ensure that the ECMs with this diagnostic code are powered up before proceeding with this procedure.An FMI 09 means that the Graphical Display has lost all communication with another control module.
Illustration 1 g06223913Note: The diagram above is a simplified schematic of the Graphical Display connections. The schematic is electrically correct. However, not all the possible harness connectors are shown. For the complete schematic, refer to the latest revision of the machine's Electrical Schematic.Diagnostic Trouble Code Procedure
Poor connections can often be the cause of a problem in an electrical circuit. Prior to beginning this procedure, perform the following checks:
Inspect the harness connectors that are involved in the circuit.
Verify that all connections in the circuit are clean, secure, and in good condition.
Check the wiring for pinch points or abrasions.
Look for and repair areas that indicate wires are exposed.If a problem with a connection is found, correct the problem and verify that a diagnostic code is active before performing a troubleshooting procedure.
Table 2
Troubleshooting Test Steps Values Results
1. Identify The Active FMI Code Associated With The CAN Data Link
A. Connect Cat® Electronic Technician (Cat ET) Service Tool.
B. Check for codes.
No CAN data link code.
OK - CAN data link FMI 02 or FMI 09 is not present.
STOP.
Not OK - CAN data link FMI 02 or FMI 09 is present.
Go to Step 2.
2. Check Connections And Harness
A. Inspect the circuit