New Holland 4791: Proportional Valve X-Axis: Valve MMX-B Solenoid Short to 12V

The fault code indicates a short circuit in the solenoid of the Proportional Valve X-Axis, specifically the Valve MMX-B, where the solenoid is shorted to 12V.

1. 1

   The solenoid of the Valve MMX-B

2. 2

   Wiring connected to the solenoid

3. 3

   Connections to the 12V power supply

1. 1

   Inspect

   Inspect the solenoid of the Valve MMX-B for visible damage or signs of shorting.

2. 2

   Test

   Test the solenoid of the Valve MMX-B for continuity and resistance using a multimeter.

3. 3

   Check

   Check the wiring and connections to the solenoid for any damage, corrosion, or improper connections.

4. 4

   Verify

   Verify the 12V power supply and its connection to the solenoid to ensure it is not causing the short.