Case IH 15991 – AST (Advanced Steering) controller or CCM (Cab Control Module): PVED-CLS is configured as 'not present' but PVED-CLS is detected online

This fault indicates a software configuration mismatch on the tractor's CAN bus network. The tractor's main controller is receiving active communication from the PVED-CLS steering valve controller, but the tractor's software configuration parameters are set to indicate that this module is not installed on the machine.

• MAXXUM T4E
• VESTRUM CVX
• Case IH Steiger (AFS Connect models)
• Case IH Magnum
• Case IH Puma and Optum series
• Case IH Farmall (specific CVT/cab configurations)

1. 1

   Verify Physical Hardware: Inspect the steering valve block (usually located under the cab or near the front axle depending on the model) to confirm if the Danfoss PVED-CLS actuator is physically installed.

2. 2

   Check Recent Installations: Determine if an aftermarket auto-steer kit (e.g., Agri-Steer or Trimble Autopilot) was recently installed or plugged into the CAN bus, which might be broadcasting PVED-CLS messages.

3. 3

   Review Software Configuration: Use the Case IH Electronic Service Tool (EST) to check the tractor's Advanced Steering (AST) configuration. Look for the parameter defining the presence of the PVED-CLS or NAV controller.

1. 1

   Connect diagnostic tool

   Connect the Case IH Electronic Service Tool (EST) laptop to the tractor's diagnostic port.

2. 2

   Navigate to configuration menu

   Navigate to the configuration/programming menu for the CCM (Cab Control Module) or AST (Advanced Steering).

3. 3

   Locate dataset

   Locate the steering configuration dataset.

4. 4

   Update configuration (if equipped)

   If the tractor IS equipped with the PVED-CLS valve: Change the configuration parameter for the PVED-CLS (or Advanced Steering/NAV option) from 'Not Present' to 'Present'.

5. 5

   Disconnect rogue modules (if not equipped)

   If the tractor is NOT supposed to have this valve: Locate the source of the rogue CAN bus messages. Disconnect any incorrectly installed aftermarket steering harnesses or modules that are falsely broadcasting the PVED-CLS online signal.

6. 6

   Save changes

   Save the configuration changes in the EST.

7. 7

   Perform key cycle

   Perform a key cycle (turn the ignition off, wait 30 seconds for the modules to power down, and turn it back on) to allow the CAN bus to re-initialize.

8. 8

   Clear fault codes

   Clear the inactive fault codes.

9. 9

   Calibrate steering system

   If the configuration was updated to 'Present,' you may need to perform a steering angle sensor calibration and a PVED-CLS valve calibration to ensure the system operates safely.