Case IH 3751 – Engine Control Unit (ECU) / Electronic Diesel Control (EDC): Injection control: Error in the plausibility of the start of energizing angles

The engine controller has detected an anomaly or implausible data regarding the timing (start angle) of the fuel injector energizing sequence.

• Farmall
• skid steer
• Steiger T4B
• Skid Steer Loaders (SSL)
• Compact Track Loaders (CTL)
• Tractors

1. 1

   Connect the CNH Electronic Service Tool (EST) and check for any other active fuel system, camshaft/crankshaft sensor, or injector-related fault codes that could cause injection timing plausibility errors.

2. 2

   Verify the current software version on the EDC using the EST to see if an updated engine dataset is available.

1. 1

   Connect diagnostic tool

   Connect the CNH Electronic Service Tool (EST) to the machine's diagnostic port.

2. 2

   Reload Engine Dataset

   Reflash the Engine Controller (EDC) with the appropriate engine dataset.

3. 3

   Clear codes and test

   Clear the fault codes and cycle the machine to see if fault code 3751 returns.

4. 4

   Replace the EDC

   If the fault persists after the software reload, the Engine Controller (EDC) has suffered an internal failure and must be replaced.

5. 5

   Restore Parameters

   If the EDC is replaced, you MUST follow the appropriate service tool procedure in the EST to restore the engine's self-learning parameters (such as Zero Fuel Calibration and injector trim codes).