CLAAS Id7658h / 7658h (457) – TR2 (A57-2): Calibration of the left position of the current steering angle.

This code indicates that the system requires calibration for the left-most steering position, or that the system has lost the calibrated left-position data from the steering angle sensor.

• CLAAS Arion 510
• CLAAS Arion 520
• CLAAS Arion 530
• CLAAS Arion 540
• CLAAS Arion 610
• CLAAS Arion 620
• CLAAS Arion 630
• CLAAS Arion 640
• CLAAS Axion 800
• CLAAS Axion 810
• CLAAS Axion 820
• CLAAS Axion 830
• CLAAS Axion 840
• CLAAS Axion 850

1. 1

   Check the connectors and the continuity of the wiring harness linking the steering angle sensor (Component B117) to the TR2 (A57-2) module

2. 2

   Check for any short-circuits or open circuits in the sensor wiring

3. 3

   Check power and ground sources to the sensor, including fuses, supply voltage, and ground connections (sensor voltage should operate between 0.5V and 4.5V)

4. 4

   Check the sensor's resistance and physical adjustment/mounting on the axle

5. 5

   Inspect the steering components for mechanical seizing, pressure issues, or temperature anomalies

6. 6

   Check the compatibility of the program versions, settings, and current calibration values

1. 1

   Note and Analyze

   Note all error codes present on the tractor, as one error code can generate another. Identify if the steering angle sensor is the root origin of the anomaly.

2. 2

   Calibrate the Steering Angle

   Turn the wheels fully to the left to set the left position. Validate the position using the differential lock button (or via the CEBIS/CLAAS Diagnostic System terminal depending on the exact model year).

3. 3

   Clear Codes

   Clear all error codes from the system.

4. 4

   Test Drive

   Test the tractor to see if the anomaly appears again.

5. 5

   Replace Sensor

   If the calibration fails to hold, or if the sensor voltage remains outside the 0.5V - 4.5V range, the steering angle sensor (B117) is faulty and must be replaced.