John Deere 522876.31 – BLC (Base Load Center): CAN BUS Message Cannot Be Received, Information from Implement

Communication failure on the machine's J1939 CAN bus network. Specifically, the tractor's internal network is failing to receive expected data messages from the attached implement.

• 6110M
• 6120M
• 6130M
• 6145M
• 6155M
• 6175M
• 6195M
• 6090MC
• 6090RC
• 6100MC
• 6100RC
• 6110MC
• 6110RC

1. 1

   Access and record the code using the machine's monitor to verify if it is Active or Stored

2. 2

   Visually inspect the physical connection between the tractor and the implement for damaged wires, stretched harnesses, or a loose connection at the implement receptacle

3. 3

   Inspect the implement connector at the rear of the tractor for dirt, corrosion, bent pins, or moisture ingress

4. 4

   Test the CAN bus network using a multimeter to verify proper CAN High and CAN Low voltages

5. 5

   Verify that the CAN bus terminating resistors are intact and functioning

1. 1

   Disconnect and Clean

   Disconnect the implement from the tractor. Clean the implement connector and the tractor's receptacle using electrical contact cleaner to remove any debris or corrosion.

2. 2

   Test the Harness

   Trace the wiring harness from the implement connector back to the Base Load Center (BLC). Look for pinch points, chafing, or broken wires.

3. 3

   Repair Wiring/Connectors

   If the CAN bus wiring is damaged, splice and seal the affected wires according to OEM electrical service procedures, or replace the damaged implement connector.

4. 4

   Replace Terminating Resistor

   If the multimeter test reveals a missing or failed terminating resistor on the implement bus, install a replacement resistor.

5. 5

   Clear and Retest

   Reconnect the implement. Turn the key on to allow the BLC to ping the network. Clear the stored 522876.31 code from the diagnostic menu and verify that the code does not return to an "Active" state. If the code persists and all wiring tests perfectly, the BLC itself may require dealer-level replacement and reprogramming.