John Deere 2003.09 – XSC: CAN Bus Communication Error

A control module on the network (specifically the XSC AutoTrac steering module) is not receiving expected data messages from the Transmission Control Unit (TCU), Electronic Power Control (EPC), or transmission control software due to an abnormal update rate or missing message.

• 6110M
• 6120M
• 6130M
• 6145M
• 6155M
• 6175M
• 6195M
• 6110R
• 6120R
• 6130R
• 6145R
• 6155R
• 6175R
• 6195R
• 6215R
• 8235R
• 8245R
• 8260R
• 8285R
• 8310R
• 8335R
• 8360R
• 8400R
• 7630
• 7730
• 7830
• 7930
• 6110M-6195M
• 6145J
• 6165J
• 6180J
• 6205J
• 5075M
• 5090M
• 5100M
• 5115M
• 6135R
• 6110M-6125M

1. 1

   Restart the tractor to see if the communication messages reset upon startup

2. 2

   Check transmission fuses (e.g., Fuse F6 for IVT/AutoPowr or Fuse F35 for PowrQuad Plus) for blown fuses

3. 3

   Inspect the CAN Bus network wiring and connectors between the XSC module and the transmission controller for damage, loose connections, or corrosion

4. 4

   Test the CAN Bus terminating resistors at the ends of the network to verify they are functioning correctly

5. 5

   Monitor CAN Bus traffic using a diagnostic tool to see if the network is overloaded or if the transmission controller is offline

1. 1

   Secure the Machine

   Park the tractor on a level surface, turn off the engine, and disconnect the battery if you will be performing electrical repairs.

2. 2

   Inspect and Replace Fuses

   Locate the load center (fuse box) and inspect the fuses related to the transmission control unit. Replace any blown fuses and retest.

3. 3

   Clean and Secure Connectors

   Locate the XSC module and the transmission controller. Disconnect their wiring harnesses, inspect the pins for pushed-out terminals or green corrosion, clean them with electrical contact cleaner, and securely reconnect them.

4. 4

   Test/Replace Terminating Resistors

   Locate the CAN bus terminating resistors on the wiring harness. With the battery disconnected, test the network resistance across the CAN High and CAN Low pins (it should typically read 60 ohms). If a resistor is faulty, replace it.

5. 5

   Repair Wiring

   If you find chafed or broken wires in the CAN bus harness causing an open or short circuit, repair or replace the damaged harness section.

6. 6

   Software Update

   If the wiring and resistors are intact, the XSC or transmission control software may have a bug or compatibility issue. A John Deere dealer will need to connect Service ADVISOR to update the modules to the latest software versions.

7. 7

   Clear Codes

   Reconnect the battery, turn the key switch ON, clear the diagnostic trouble codes, and operate the tractor to verify the repair.