John Deere 04: RCU 5 VDC Sensor Supply Out of Range

The RCU 5 VDC sensor supply is not providing the required voltage, as it is below 4.5 VDC. This may affect the proper operation of the sensor connected to this supply.

1. 1

   Power supply to the RCU

2. 2

   Wiring and connections to the RCU 5 VDC sensor supply

3. 3

   RCU itself for faults

1. 1

   Check the power supply to the RCU

   Verify that the RCU is receiving the correct voltage from the power source.

2. 2

   Inspect wiring and connections

   Examine the wiring and connections to the RCU 5 VDC sensor supply for damage, corrosion, or loose contacts.

3. 3

   Test the RCU

   Use diagnostic tools to test the RCU for internal faults or malfunctions.