Case IH 1064 - 02 - CSM – CSM (Cab Suspension Module): Cab suspension controller communication error

CAN bus communication error involving the Cab Suspension Module (CSM). The main vehicle controller has exceeded the time limit waiting for a message from the CSM, or the data received is erratic/invalid.

• MAGNUM AFS Connect
• AFS Connect Magnum Tractors (Models 180, 200, 220, 240, 250, 280, 310, 340, 380)
• Puma Series (e.g., Puma 185 - 260)
• Maxxum Series
• Steiger Series

1. 1

   Inspect the plug-and-socket connections at the Cab Suspension Module for loose pins, pushed-out pins, or corrosion.

2. 2

   Test the continuity of the CAN bus wiring harness linking the CSM to the main controller. Look for open circuits or short circuits to ground/power.

3. 3

   Verify the CAN bus terminating resistors are intact and reading the correct resistance (typically 60 ohms across the bus when powered down).

4. 4

   Ensure the CSM is receiving proper operating voltage and has a clean ground connection.

1. 1

   Disconnect the battery.

   Disconnect the battery.

2. 2

   Disconnect the harness from the CSM.

   Disconnect the harness from the CSM.

3. 3

   Clean the connector contacts.

   Clean the connector contacts with an approved electrical contact cleaner.

4. 4

   Perform a continuity test.

   Perform a continuity test on the CAN High and CAN Low wires between the CSM and the main controller. Repair any breaks or chafed wires in the harness.

5. 5

   Reconnect the module and clear the fault codes.

   Reconnect the module and clear the fault codes.

6. 6

   Replace and reprogram the Cab Suspension Module.

   If the wiring is fully intact and the code returns immediately upon key-on, the Cab Suspension Module itself may have an internal failure and require replacement and reprogramming.