Case IH 520241-13 - VCM – VCM: Steering valve controller internal fault

An internal controller fault indicates a hardware or software failure within the module managing the electrohydraulic steering valve, preventing it from accurately processing steering inputs or communicating on the CAN bus.

• MAGNUM AFS Connect
• Steiger 370 AFS Connect
• Steiger 420 AFS Connect
• Steiger 470 AFS Connect
• Steiger 580 AFS Connect

1. 1

   Ensure the steering valve is supplied with sufficient hydraulic oil flow.

2. 2

   Assure that all air has been bled from the steering system by turning the steering wheel fully left, then fully right, a minimum of 10 times.

3. 3

   Verify that no abnormal noise or vibration occurs when steering.

4. 4

   Check the wiring of the chassis CAN data connection and the related electrical connectors between the ECU and the steering valve for shorts or open circuits.

1. 1

   Relieve hydraulic pressure

   Relieve all hydraulic pressure from the steering system before disconnecting any lines.

2. 2

   Disconnect power

   Disconnect the battery/power supply to the VCM.

3. 3

   Disconnect harnesses

   Disconnect the CAN/electrical harnesses from the steering valve controller and the VCM.

4. 4

   Replace component

   Replace the faulty component (VCM or Steering Valve).

5. 5

   Perform calibration

   Perform a steering valve calibration routine. Calibration must be performed on an on-road surface (i.e., unpainted concrete or asphalt).