Case IH 15667 – MTA CCM (Cab Control Module) or PVED-CLS: Timeout of steering angle sensor CAN message

This code indicates an Advanced Steering (AST) generic configuration error or a loss of CAN communication. Specifically, it triggers when at least one advanced steering function (such as VRS, NAV, or ISOSteering) is configured as 'present' in the system, but the PVED-CLS (the electrohydraulic steering valve controller) is configured as 'not present,' or the system has lost the CAN signal from the steering angle sensor.

• MAXXUM T4E
• VESTRUM CVX
• Steiger & Quadtrac series (370, 420, 470, 500, 540, 580, 620)
• Magnum series (180 through 400)
• Puma series
• Maxxum series
• Optum series
• Farmall series
• Vestrum
• Quantum
• 100-225 series
• MX210
• MX230

1. 1

   Connect the Electronic Service Tool (EST) and check the CCM configuration to ensure the PVED-CLS module is configured as 'present'

2. 2

   Inspect the CAN bus harness connecting the steering angle sensor, the PVED-CLS controller, and the CCM for broken wires, corrosion, or loose connector pins

3. 3

   Verify the power supply to the PVED-CLS module (must be a standard 12V/24V supply; drops below 9V will cause faults and module offline issues)

4. 4

   Physically inspect the steering angle sensor on the steering axle for impact damage, loose mounting brackets, or water intrusion

1. 1

   Correct Software Configuration

   If the diagnostic tool reveals a configuration mismatch, update the CCM settings to ensure the PVED-CLS is recognized as 'present' on the network. Clear the code and cycle the key to see if the fault returns.

2. 2

   Repair Wiring

   If the configuration is correct but the CAN timeout persists, repair any damaged wiring or replace the affected harness section between the steering angle sensor and the PVED-CLS.

3. 3

   Replace Faulty Components

   If the steering angle sensor is outputting erratic or no data, remove the sensor from the steering axle and install a replacement. If the PVED-CLS module itself is unresponsive to the CAN bus, replace the module on the electrohydraulic steering valve assembly.

4. 4

   System Calibration

   After replacing either the steering angle sensor or the PVED-CLS controller, you must perform a steering system calibration (calibrating the EH valve spool and the steering position sensor) using the EST before returning the tractor to service.