New Holland 4781 – UCM: Solenoid Supply Open Circuit in Two Speed System

The fault code indicates an open circuit in the solenoid supply for the two-speed system. This prevents the solenoid from receiving the necessary power to function properly.

1. 1

   Wiring connections related to the solenoid supply

2. 2

   Power supply to the solenoid

3. 3

   Continuity of the solenoid supply circuit

1. 1

   Inspect the wiring connections

   Check for loose, damaged, or disconnected wiring related to the solenoid supply.

2. 2

   Test the power supply

   Verify that the solenoid is receiving the correct voltage as specified in the service manual.

3. 3

   Check circuit continuity

   Use a multimeter to test for continuity in the solenoid supply circuit.