Case IH 3758 – Engine Controller (EDC): Reload Engine Dataset Or Replace Engine Controller If Fault Persists (Level 2 Monitoring)

Level 2 Monitoring fault generated by the engine controller, triggered by a diagnosis fault check demanding an ICO (Injection Cut-Off) due to an error in the 'PoI3 efficiency factor'. This indicates the engine controller has detected an internal software or processing anomaly regarding injection efficiency calculations.

• skid steer
• Case IH Skid Steer Loaders (SSL)
• Case IH Compact Track Loaders (CTL)
• Case IH Farmall Tractors (95, 105, 115 series)
• Case IH / Case CE Backhoe Loaders (580N, 580SN)

1. 1

   Connect the Case IH Electronic Service Tool (EST) to confirm 3758 is active and check for any accompanying voltage or CAN communication codes (which could indicate a wiring issue rather than an internal ECU failure).

2. 2

   Review the freeze-frame data (Environmental Conditions) in the EST to see when the fault occurred.

3. 3

   Check the current software version on the EDC to ensure you are flashing it with the most up-to-date dataset provided by CNH.

1. 1

   Reload the Engine Dataset

   Connect the Case IH Electronic Service Tool (EST) to the machine's diagnostic port. Navigate to the programming/flashing menu and reload the engine dataset (re-flash the ECU software).

2. 2

   Clear and Retest

   Clear the fault codes, cycle the key, and run the engine to see if the Level 2 Monitoring fault returns.

3. 3

   Replace the Controller (If necessary)

   If fault code 3758 persists after the software has been successfully reloaded, the Engine Controller (EDC) has suffered an internal hardware failure and must be replaced.

4. 4

   Restore Self-Learning Parameters

   If the EDC is replaced, you must use the EST to perform the appropriate service tool procedures to restore self-learning parameters. This typically includes programming the injector IMA codes, performing the high-pressure pump relearn, and writing the machine's VIN/serial data to the new module.