John Deere 516707.01 – Rear Chassis Module (SCC): Low Voltage On Rear SCV Valves 6

The system has detected a lower-than-expected voltage on the electrical circuit controlling the 6th rear Selective Control Valve (SCV). This typically indicates an open circuit, high resistance in the wiring, a failing solenoid, or a poor ground connection.

• 6110R
• 6120R
• 6130R
• 6145R
• 6155R
• 6175R
• 6195R
• 6215R

1. 1

   Check the power and ground circuits for the Rear SCV 6 valve originating from the Rear Chassis Module (SCC)

2. 2

   Inspect the wiring harness between the SCC and the Rear SCV 6 solenoid for pinched wires, corrosion, or moisture intrusion at the connector

3. 3

   Perform a voltage drop test to check for high resistance or an open circuit in the wiring harness

4. 4

   Measure the resistance across the SCV 6 solenoid pins to determine if the coil has failed internally

5. 5

   Verify that the SCC is communicating properly on the CAN Bus network

1. 1

   Relieve Pressure

   Before performing any physical repairs on the SCV block, turn off the tractor and operate the SCV levers/controls to relieve any trapped hydraulic pressure in the system.

2. 2

   Clean the Area

   Clean the rear of the tractor around the SCV couplers with compressed air and brake cleaner to prevent dirt from entering the hydraulic system.

3. 3

   Electrical Repair

   If the diagnostic checks revealed a wiring issue, repair the open circuit or high resistance in the harness. Replace any damaged connector pins.

4. 4

   Component Replacement

   If the wiring is intact and the solenoid is faulty, replace the SCV valve solenoid or the entire SCV valve assembly (depending on whether the solenoid is serviceable separately on your specific SCV series).

5. 5

   Reassembly & Testing

   Reconnect the electrical harness. Start the tractor, operate the rear SCV 6 to verify the repair, and check the valve block for any hydraulic oil leaks. Clear the fault code via the diagnostic monitor.