Case IH 2692 – ZTC: CAN Message AXCTL1 Checksum Incorrect

The ZTC module received a CAN message designated as AXCTL1, but the checksum was incorrect. This indicates the data packet was corrupted, interrupted, or mismatched, which can be caused by software glitches, faulty wiring, or a failing module transceiver.

• Steiger T4B
• Case IH Steiger / Magnum
• Case IH Optum / Puma LWB (Long Wheelbase)
• Case IH Sprayers

1. 1

   Check if there is a software update available for the ZTC controller or the module broadcasting the AXCTL1 message

2. 2

   Inspect the CAN bus wiring harness connecting to the ZTC module for chafed wires, moisture intrusion in the connectors, or loose pins

3. 3

   Test the CAN network for proper voltage and terminating resistance to ensure the physical layer is not distorting messages

1. 1

   Clean and secure connections

   Clean and secure all connections to the ZTC controller.

2. 2

   Repair wiring

   Repair any damaged sections of the CAN bus wiring harness.

3. 3

   Reflash software

   Connect the CNH Electronic Service Tool (EST) and reflash the ZTC module with the latest software.

4. 4

   Replace module

   If wiring is intact and software is up-to-date but the code persists, the ZTC module itself may have a failing internal CAN transceiver and will require replacement.