Internal failure of the valve driver module.
No operation of the electro-hydraulic functions.
Probable Causes and Test Procedures

- Ensure all fuses are properly seated and tight in the fuse holders.
- Ensure all wiring connections are tight and secure at the fuse panel, key switch, and the battery disconnect switch.
- Check that the battery disconnect switch, the key switch, and the main contactor contacts are in the correct position and properly making contact.
- Recycle the key switch from the OFF to the ON position.
- Check all pins at the valve controller connector are tight and secure.
- Replace the valve driver module.