CLAAS Id76E8h / 76E8h (637) – SFA (A102) - Front Axle Suspension Module: Open circuit, short-circuit to ground of the suspension’s right-hand position sensor.

The system detects that the signal from the right-hand front axle suspension position sensor is either missing (open circuit) or shorted to ground. As a safety and operational response, the system will lock the non-functional suspension in its current position, and the operator may be prompted to drive at a reduced speed.

• Axion 810
• Axion 820
• Axion 830
• Axion 840
• Axion 850
• Axion 870
• Axion 950
• Arion 510
• Arion 530
• Arion 550
• Arion 620
• Arion 640
• Arion 650
• Ares 806
• Ares 816
• Ares 826
• Ares 836

1. 1

   Inspect the Right-Hand (RH) suspension position sensor (B234-1).

2. 2

   Check the wiring harness connecting the B234-1 sensor to the SFA (A102) module for physical damage, chafing, or breaks.

3. 3

   Verify no short-circuit to ground on the sensor's signal wire and ensure correct supply voltage (8Vdc or 12Vdc).

1. 1

   Locate the Sensor

   Locate the RH front axle suspension position sensor (B234-1) mounted on the right side of the front axle suspension cylinder/linkage.

2. 2

   Disconnect and Inspect

   Disconnect the sensor's electrical connector. Inspect the pins for corrosion, moisture, or pushed-out terminals.

3. 3

   Test the Circuit

   Using a multimeter, test the continuity of the wiring from the sensor connector back to the A102 Front Axle Suspension Module. Test the signal wire for continuity to ground to rule out a short.

4. 4

   Replace the Sensor

   If the wiring is intact and the module is outputting the correct reference voltage, the sensor itself has failed internally. Unbolt the faulty sensor and install the replacement.

5. 5

   Calibrate

   After replacing the position sensor, a calibration of the front axle suspension system may be required using the CLAAS CDS (CLAAS Diagnostic System) tool to ensure the module learns the new sensor's travel limits.