Case IH 17776 (F-7107-17) - ECU – ECU: DEF/AdBlue supply module pump motor - Pump speed below the minimum limit

This code indicates that the internal pump motor within the DEF (Diesel Exhaust Fluid) supply module is not reaching its minimum required operating speed. This is typically caused by mechanical wear (degraded impellers/bearings), electrical issues (low voltage/corrosion), or a physical blockage such as frozen DEF or severe urea crystallization preventing the pump motor from turning freely.

• VESTRUM CVX
• Austoft 9000
• Austoft 9900
• Axial-Flow 5130
• Axial-Flow 6130
• Axial-Flow 7130
• Axial-Flow 7240
• Axial-Flow 8240
• Axial-Flow 9240
• Magnum (180-380)
• Steiger (350-620)
• Puma (130-215)
• Maxxum
• Optum
• Farmall
• Patriot 2250
• Patriot 3240
• Patriot 3340
• Patriot 4430
• Titan Floaters
• Farmlift

1. 1

   Initial logic and parameters are validated

2. 2

   Connect the FPT Engine Troubleshooting software (E.A.S.Y. or Jaltest) and run the Urea Dosing Pump Check (UDPC) and Urea Dosing System Test (UDST) to command the pump and monitor its actual speed and pressure buildup.

1. 1

   Clean the area

   Thoroughly clean the area around the DEF supply module to prevent dirt from entering the SCR system.

2. 2

   Standard processing applied

   Standard processing applied

3. 3

   Standard processing applied

   Standard processing applied

4. 4

   Standard processing applied

   Standard processing applied

5. 5

   Standard processing applied

   Standard processing applied

6. 6

   Prime and clear codes

   Reconnect the battery. Use the diagnostic software to run the 'DEF Supply Module Flushing Procedure' to prime the system, then clear the fault codes and reset the counters.