John Deere 2164.09 – SCC (Selective Control Unit): SV IV Message Missing / CAN BUS Message Fault SCV 4

The SCV Control Unit (SCC) is not receiving the expected communication messages from the fourth selective control valve (SCV 4), resulting in a 'SV IV Message Missing' condition. This indicates a communication breakdown on the CAN bus within the affected circuit, rather than a specific mechanical failure of the valve itself.

• 6110R
• 6120R
• 6130R
• 6145R
• 6155R
• 6175R
• 6195R
• 6215R
• 7R Series
• 8245R
• 8400R
• 8310RT
• 8360RT
• 9230
• 9330
• 9430
• 9530
• 9630
• 9470RT
• 9520RT
• 9570RT
• 8430
• 8530
• 944K Hybrid Loader
• 310SK

1. 1

   Verify Active Status: Check if the code is actively thrown when attempting to operate SCV 4.

2. 2

   Check Paired SCVs: Determine if SCV 3 is also failing. If both SCV 3 and SCV 4 are dead, you are likely dealing with a power supply issue rather than a CAN bus failure.

3. 3

   Power and Ground Testing: Test for power and ground directly at the SCV 4 connector.

4. 4

   Harness and Connector Inspection: If there is no power, inspect the frame connectors located just behind the SCV block for corrosion or backed-out pins.

5. 5

   Continuity Testing: Check continuity from the bottom frame connector to the SCV connector, and from the frame connector to the middle connector of the SCC (Rear Chassis Controller).

6. 6

   Temporary Ground Test: If all SCVs are cutting out simultaneously, temporarily jump a ground wire from the frame to the connector to see if the SCVs recover.

1. 1

   Resolve Wiring Faults

   If continuity is broken between the SCC and the SCV 4 connector, either repair the damaged section of the wiring harness, replace the harness, or run a new overlay wire to restore CAN/power communication.

2. 2

   Address Corrosion

   Clean any corroded pins at the frame connectors and apply dielectric grease.

3. 3

   Replace the SCV

   If power, ground, and CAN continuity are all verified but the SCC still cannot communicate with SCV 4, the electronic control unit on the valve itself has failed and the SCV must be replaced.

4. 4

   Reconfiguration

   If a new SCV is installed, it must be configured. Access the SCC address via the CommandCenter display to manually reconfigure and assign the new valve as 'SV4' so the network recognizes it.