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| Illustration 1 | g02961516 |
Schematic of the data link communication system connections | |
This diagnostic code is associated with the communication between the Machine Electronic Control Module (ECM) and the Power Train ECM. The communication is conducted on the CAT® Data Link circuit or the communication that is conducted over the data link circuit.
The FMI 09 means that the Machine ECM is not receiving any communication from the Power Train ECM on the involved data link circuit.
A companion diagnostic code is activated when the diagnostic code is activated by the Machine ECM. The companion diagnostic code indicates the data link that is involved. The companion diagnostic code that has been activated will be either of the following diagnostic codes:
CID 0247 FMI 09 - Data Link
CID 0248 FMI 09 - CAT®Data Link
Determine the companion code that is activated simultaneously with the CID 0296 FMI 09 diagnostic code to determine which data link is involved.
Note: The companion code of the data link is cleared when the CID 0296 FMI 09 diagnostic code is cleared.
The possible causes of the diagnostic code are listed below:
- Terminating resistors on the data link are faulty
- An ECM or smart device is not powering up
- Lack of key switch input to an ECM or smart device (where applicable)
- Excessive noise on the data link circuit
- An open or a poor connection in the data link circuit
- Software configuration mismatch
- The Power Train ECM has failed. The ECM is unlikely to fail
- The Machine ECM has failed. The ECM is unlikely to fail
Note: A loss of power in the system to the Power Train ECM can cause the Machine ECM to activate this diagnostic code. Ensure that the Power Train ECM is powered up before proceeding with this procedure.
Note: Ensure that the CID 0296 FMI 09 diagnostic code is active before performing this procedure.
Test Step 1. DETERMINE THE DATA LINK COMPANION CODE THAT IS ACTIVE
- Check the list of active diagnostic codes in order to determine the "companion" diagnostic codes that are active. Refer to Table 1.
Show/hide table
Table 1 Diagnostic Codes Description CID 0247 FMI 09 Data Link CID 0248 FMI 09 CAT®Data Link
Results:
- YES - Both the CID 0247 FMI 09 and the CID 0248 FMI 09 codes are active. Check power to the Machine ECM.STOP
- YES - Only the CID 0248 FMI 09 diagnostic code is active indicating that the problem is in the CAT®Data Link. To perform the troubleshooting procedure for the CAT®Data Link, proceed to the diagnostics for CID 0248 FMI 09.
- YES - Only the CID 0247 FMI 09 diagnostic code is active indicating that the problem is in the data link. In order to perform the troubleshooting procedure for the data link, proceed to the diagnostics for CID 0247 FMI 09.