New Holland ENG 3738 – EDC (Electronic Diesel Control): EDC - Analog Digital Converter (ADC): Diagnostic fault check to report multiple error while checking the complete ROM-memory

Critical internal hardware or memory failure within the engine's control module. The controller has run a self-diagnostic check on its Read-Only Memory (ROM) and detected multiple errors.

• 200 Series
• L180
• L185
• C185
• T4 Series (T4F, T4N, T4V, T4LP)
• T5 Series (Dual Command, Electro Command)

1. 1

   Connect the New Holland Electronic Service Tool (EST) to prepare for module reprogramming (standard wiring or sensor checks will not resolve this internal ROM failure)

1. 1

   Reprogram the EDC

   Using the New Holland Electronic Service Tool (EST), attempt to flash/reprogram the Engine Controller to see if the ROM error can be overwritten or resolved.

2. 2

   Replace the Engine Controller

   If the fault code persists after reprogramming, the internal memory is permanently corrupted or damaged. The EDC must be physically replaced.

3. 3

   Restore Self-Learning Parameters

   If the EDC is replaced, you must use the New Holland Service Tool procedure to restore the engine's self-learning parameters to the new module so it can communicate properly with the machine.