John Deere 2240.09 – ICU, BCU, CLC, BLC, or TMA: TEC Message Missing / Incorrect CAN Bus Message from TEC

The logging control unit is experiencing intermittent or completely absent reception of CAN bus messages from the Transmission Electronic Controller (TEC). Issues such as loose wiring, faulty connections, or signal interference are typically responsible for disrupting this data transmission.

• 6110M
• 6120M
• 6130M
• 6145M
• 6155M
• 6175M
• 6195M
• 6110R
• 6120R
• 6130R
• 6145R
• 6155R
• 6175R
• 6195R
• 6215R
• 6230
• 6330
• 6430
• 6090MC/RC
• 6100MC/RC
• 6110MC/RC
• 7630
• 7730
• 7830
• 7930
• 7720
• 7820
• 7920
• 7810
• 7185J
• 7195J
• 7205J
• 7210J
• 7225J
• 8R/8RT series (8245R–8400R)
• 8310RT
• 8335RT
• 8360RT
• 9230
• 9330
• 9430
• 9530
• 9630

1. 1

   Restart the Tractor: Sometimes the code is triggered by a temporary communication glitch. Restart the engine to verify if the active diagnostic trouble code reappears before tearing down components.

2. 2

   Check Fuses: For ICU-logged 002240.09 codes, official manuals specifically instruct technicians to check fuse F23.

3. 3

   Inspect Wiring: Carefully examine all wiring and connections in the CAN bus system between the logging module (e.g., BCU/ICU) and the TEC. Look for signs of damage, wear, or looseness.

4. 4

   Test CAN Bus: Utilize diagnostic tools to test the continuity and integrity of the communication between the control unit and the TEC to pinpoint signal loss.

1. 1

   Power Down & Inspect Fuses

   Turn off the machine and inspect fuse F23. Replace it if it is blown.

2. 2

   Harness Inspection

   If the fuse is intact, visually inspect the CAN bus wiring harness connecting the TEC to the main control units (ICU/BCU).

3. 3

   Repair Wiring

   Address any identified issues with wiring or connectors by repairing or replacing them to ensure stable and secure communication.

4. 4

   Check TEC Functionality

   If wiring is verified good, ensure that the Transmission Electronic Controller (TEC) itself is functioning properly. If the TEC is sending corrupt data or failing to communicate, it may need to be reprogrammed or replaced.

5. 5

   Reset Modules

   After making the necessary corrections, reset the logging control unit (BCU/ICU) to clear any stored error codes and reinitialize the system settings.

6. 6

   Verify Repair

   Restart the vehicle and monitor system performance to ensure the code does not return and that transmission functions operate normally.