John Deere 002227.09 – ICU: Missing Message from Set-Up Panel

The Instrument Control Unit (ICU) has detected a missing message from the Set-Up Panel (SUP) over the CAN bus network. The SUP is the operator control panel used to configure selective control valve (SCV) functions. This fault indicates a communication breakdown between the SUP and the ICU, which can be caused by a blown fuse, wiring harness damage, or a failed SUP controller.

• 7630
• 7720
• 7730
• 7810
• 7820
• 7830
• 7920
• 7930
• 8100
• 8130
• 8200
• 8230
• 8300
• 8330
• 8400
• 8430
• 8530
• 9100
• 9200
• 9230
• 9300
• 9330
• 9400
• 9430
• 9520
• 9530
• 9620
• 9630

1. 1

   Restart the tractor to see if the communication message resets and clears the code

2. 2

   Check Fuse F23 (located behind the operator's seat on 9x30 series tractors), which provides power to the SUP and other controllers. Replace if blown with the same amperage rating

3. 3

   Verify power and ground are present at the SUP connector

4. 4

   Unplug the SUP (SCV Setup Panel) connector and inspect pins and sockets for corrosion or damage

5. 5

   Visually inspect the CAN bus wiring harness for pinched, corroded, or damaged wires, especially in areas subject to vibration

6. 6

   Perform a CAN bus resistance check with the battery disconnected: measure resistance between pins C and D of the diagnostic connector. Approximately 60 ohms is normal; 120 ohms indicates a faulty or disconnected terminating resistor

1. 1

   Isolate the faulty controller

   If diagnostic tools are unavailable, unplug controllers on the CAN bus network one at a time, cycling the key power after each disconnection, to see if the fault code clears. This helps identify if another controller is disrupting the network.

2. 2

   Test the SUP

   Verify power, ground, and CAN bus wiring integrity directly to the SCV Setup Panel. If these circuits are intact but communication still fails, the SUP is likely faulty.

3. 3

   Replace the SUP

   If the SCV Setup Panel is determined to be the root cause of the communication failure, replace it with the appropriate part number for your machine model.