Case IH F-518144-14 - ECU – Engine Control Unit (ECU): ECU internal failure - Calculated engine speed

The code indicates an internal failure within the control module specifically related to its ability to calculate or process the engine speed signal.

• MAGNUM AFS Connect
• 240 Series Axial-Flow Combines (7240, 8240, 9240)
• Austoft 9900 Sugarcane Harvesters

1. 1

   Erase the Level 2/3 error from the fault code memory and operate the vehicle to see if the code returns

2. 2

   If the machine experiences full power loss, perform an emergency operation check (allows 30 seconds of operation to move the machine after commanding to low idle)

3. 3

   Contact Helpdesk for dealer-level diagnostics to verify if the ECU can be recovered via a software reflash or if the hardware is permanently bricked

1. 1

   Connect diagnostic tool

   Connect the Case IH EST diagnostic tool to the machine's diagnostic port.

2. 2

   Clear and verify codes

   Clear the inactive fault codes and run the engine to verify if F-518144-14 is active.

3. 3

   Check for software updates

   Check the CNH dealer portal (eTIM) for any available software updates or service bulletins related to the engine speed calculation logic for the specific machine's ECU.

4. 4

   Reflash ECU

   If a software update is available, reflash the Engine ECU.

5. 5

   Evaluate ECU replacement

   If the code persists or no software update is available, the Engine ECU has suffered a fatal internal hardware failure and must be replaced.

6. 6

   Disconnect batteries

   Disconnect the batteries before removing the ECU harness connectors.

7. 7

   Replace and program ECU

   Replace the Engine ECU and use the EST tool to program the new module to the machine and input the correct injector trim codes.