New Holland 4431 – UCM: Park Brake Pressure Switch Plausibility Check Failure

The system is detecting a plausibility issue with the Park Brake Pressure Switch in relation to the solenoid valve. This suggests a discrepancy between the expected and actual behavior of the pressure switch during the plausibility check.

1. 1

   The Park Brake Pressure Switch

2. 2

   The solenoid valve

3. 3

   The connection between the Park Brake Pressure Switch and the solenoid valve

1. 1

   Inspect

   Inspect the Park Brake Pressure Switch for physical damage or wear.

2. 2

   Test

   Test the operation of the Park Brake Pressure Switch and the solenoid valve according to the service manual.

3. 3

   Check

   Check the wiring and connections between the Park Brake Pressure Switch and the solenoid valve for continuity and proper seating.