Error Overview: The QSK60 CM2358 K121/K124 control module identification input state error occurs when the data is erratic, intermittent, or incorrect. This error can lead to various operational issues, such as the engine running rough, stopping, failing to start, or starting with difficulty.
Related Tools and Software:
Circuit Description: The Engine Control Module (ECM) utilizes the control module identification circuit to ascertain its precise location within the harness. The identification is based on the specific combination of signal pins connected to return, allowing the ECM to confirm its correct placement.
Component Location: The control module identification circuit is integrated into the harness.
Diagnostic Conditions
Conditions for Running the Diagnostics:
- The diagnostic routine initiates when the key is turned to the ON position.
Conditions for Setting the Fault Codes:
- The fault is recorded if an invalid control module identification input is detected.
Action Taken When the Fault Code is Active:
- The ECM activates the amber CHECK ENGINE lamp as soon as the diagnostic fails.
Resolution Steps
Conditions for Clearing the Fault Code:
- Perform a key cycle and leave the key in the ON position for one minute to verify the repair.
- The fault code status on the recommended Cummins® electronic service tool (or equivalent) will switch to INACTIVE immediately after the diagnostic runs and passes.
- The CHECK ENGINE lamp will turn off after the diagnostic passes.
- Utilize the “Reset All Faults” command in the electronic service tool to clear any active and inactive faults.
Possible Causes:
- Open or short circuit on one or more of the control module identification signal wires.
Steps for Troubleshooting:
- Inspect the Harness:
- Check for any visible signs of damage or wear on the wires and connections that might cause an open or short circuit.
- Use Diagnostic Tools:
- Connect the INSITE 8.9.2 software and the Cummins INLINE 6 adapter to run a detailed diagnostic scan. Pay close attention to any additional fault codes that could indicate related issues.
- Verify Wire Connections:
- Ensure that all signal pins are correctly connected and that there are no loose or corroded connectors that could disrupt the circuit’s integrity.
- Functional Test:
- After making any necessary repairs, perform a functional test by running the engine to ensure that the issue is resolved.
- Consult Detailed Repair Manuals:
- For more comprehensive troubleshooting steps and for repair cases similar to the QSK60 CM2358, refer to the QSK60 CM2358 Trouble Repair documentation.
By methodically following these guidelines, technicians can effectively diagnose and rectify the control module identification input state error in QSK60 CM2358 engines, ensuring reliable operation and minimizing downtime.
More repair case for QSK60 CM2358,please refer to Cummins Trouble Repair