New Holland 3389 – New Holland Engine: Low 12VH1 Voltage Supply

The 12VH1 voltage supply is below the required level, which may affect the operation of the engine system.

1. 1

   Battery voltage

2. 2

   Wiring connections for 12VH1

3. 3

   Voltage regulator or power supply unit

1. 1

   Check battery voltage

   Verify that the battery is fully charged and providing the correct voltage.

2. 2

   Inspect wiring connections

   Examine the wiring and connections related to the 12VH1 supply for damage, corrosion, or loose connections.

3. 3

   Test voltage supply unit

   Use a multimeter to measure the voltage at the 12VH1 supply point and compare it to the expected value.