New Holland 19740 – New Holland Dosing Control Unit Dcu: Main Relay Opens Too Early or Too Late

The main relay opens at an incorrect time, either too early or too late, which may be caused by a short circuit in the main relay or an issue with the power relay control circuit.

1. 1

   Main relay

2. 2

   Power relay control circuit

1. 1

   Inspect

   Inspect the main relay for signs of damage or short circuit.

2. 2

   Test

   Test the power relay control circuit for continuity and proper function.