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| Illustration 1 | g02077273 |
Cat Data Link connections | |
This diagnostic code is recorded when the Implement ECM does not receive expected information from the All Wheel Drive (AWD) ECM for more than 5 seconds.
This failure results in events that are logged against an ECM that cannot be explained directly. The Implement ECM cannot communicate with the AWD ECM or the ECM appears to communicate intermittently.
A "companion" diagnostic code is activated when the diagnostic code is activated by the Implement 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 0248 FMI 09 - Cat Data Link
Determine the "companion" diagnostic code that is activated simultaneously with the CID 0297 FMI 09 diagnostic code in order to determine the data link that is involved.
Note: The "companion" code of the data link is cleared when the CID 0297 FMI 09 diagnostic code is cleared.
The possible causes of the CID 0297 FMI 09 diagnostic code are listed below:
- An open or a poor connection in the data link circuit
- The Implement ECM has failed. This condition is unlikely.
- 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 AWD ECM has failed. This condition is unlikely.
Note: A loss of power in the system to the Implement ECM can cause the Implement ECM 2 to activate this diagnostic code. Ensure that the Implement ECM is powered up before proceeding with this procedure.
Note: Ensure that the CID 0297 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:
CID 0248 FMI 09 - Cat Data Link
Results:
- OK - The CID 0248 FMI 09 diagnostic code is active indicating that the problem is in the Cat Data Link. In order to perform the troubleshooting procedure for the Cat Data Link, proceed to the diagnostics for CID 0248 FMI 09.