John Deere 523923.19 – SCC: SCV I Control Lever Fault Message Received

The Selective Control Valve (SCV) I lever position data has not been received via the CAN bus network, or a fault message was received from the SCV I control lever, which typically disables the functions related to SCV I to prevent unintended hydraulic operation.

• 6110R
• 6120R
• 6130R
• 6145R
• 6155R
• 6175R
• 6195R
• 6215R
• 7630
• 7720
• 7730
• 7820
• 7830
• 7920
• 7930
• 8225R
• 8235R
• 8310R
• 8310RT
• 8335RT
• 8360RT
• 8430
• 8530
• 9230
• 9330
• 9430
• 9530
• 9630
• 9470RT
• 9520RT
• 9570RT

1. 1

   Power Cycle: Restart the tractor engine. Sometimes, this code is triggered by a temporary communication glitch on the CAN bus and can be corrected by resetting the communication messages during a restart.

2. 2

   Verify Configuration: Check the configuration of the SCV I lever at ACU Address 060 using a diagnostic monitor to ensure it is correctly configured according to OEM guidelines.

3. 3

   Inspect Wiring and Connectors: Inspect all wiring harnesses and connectors between the SCV I control lever (in the armrest) and the SCC module. Look for signs of pinched wires, poor pin connections, or corrosion.

4. 4

   Monitor CAN Messages: Use John Deere Service ADVISOR or a compatible diagnostic tool to monitor CAN messages from the SCV I control lever to the SCC to verify if data is being transmitted.

5. 5

   Check for Updates: Ensure the SCC and ACU have the latest firmware and software updates installed.

1. 1

   Safely Park the Machine

   Place the tractor in park, lower all implements, and shut off the engine.

2. 2

   Access the Armrest Console

   Carefully remove the covers on the armrest control console to access the SCV control levers and their wiring.

3. 3

   Inspect the SCV I Lever

   Disconnect the electrical connector at the SCV I control lever. Inspect the pins for damage or corrosion. Clean the contacts with electrical contact cleaner and reconnect to see if the connection was the issue.

4. 4

   Test the Harness

   Perform a continuity test on the CAN bus wiring between the SCV I lever/ACU and the SCC module. Repair any broken, chafed, or shorted wires.

5. 5

   Replace the Lever/Sensor

   If the wiring is intact and the configuration is correct, the SCV I control lever or its internal potentiometer/sensor has failed and must be replaced.

6. 6

   Reassemble and Clear Codes

   Install the new lever, reassemble the armrest, turn the key on, and clear the diagnostic trouble codes. Test the SCV I hydraulic function to confirm the repair.