John Deere 523789.05 – XSC (Steering Module / Steering Control Unit): Wheel Angle Sensor, Open Circuit

The control software registers that the voltage at the output of the wheel angle sensor is too high, indicating an open circuit such as a broken wire, a disconnected plug, or an internal failure within the sensor itself. This results in limited or no steering functionality.

• 6110M
• 6120M
• 6130M
• 6145M
• 6155M
• 6175M
• 6195M
• 6110R
• 6120R
• 6130R
• 6145R
• 6155R
• 6175R
• 6195R
• 6215R
• 8225R
• 8235R
• 8245R
• 8260R
• 8270R
• 8285R
• 8295R
• 8310R
• 8320R
• 8335R
• 8345R
• 8360R
• 8370R
• 8400R
• 8R 230
• 8R 250
• 8R 280
• 8R 310
• 8R 340
• 8R 370
• 8R 410
• 7R Series
• 9R Series

1. 1

   Inspect the wheel angle sensor physically for any signs of external damage, wear, or improper installation

2. 2

   Inspect the wiring harness and connectors associated with the wheel angle sensor for damage, corrosion, broken wires inside the insulation, or loose connections

3. 3

   Use a multimeter or diagnostic tool to test the continuity and integrity of the sensor circuit to identify any open circuits or high resistance points

4. 4

   Use John Deere diagnostic software to monitor the voltage levels at the sensor output in real-time to see if it deviates from the normal operating range

1. 1

   Reconnect or repair wiring

   If the diagnostic checks reveal a disconnected plug or a broken wire in the harness, reconnect the sensor or repair/replace the damaged wiring harness section.

2. 2

   Replace the sensor

   If the wiring is intact but the sensor fails the voltage/continuity tests, remove the faulty wheel angle sensor and install a new OEM replacement.

3. 3

   Update control software

   Check for and install any available updates for the XSC control software to address potential bugs or signal processing issues.

4. 4

   Calibrate the steering angle sensor

   After replacing the sensor or repairing the circuit, you must perform a steering angle sensor calibration procedure using the diagnostic tool. Ensure the vehicle is stationary during this process.