John Deere 523824.21 – XSC: Steering Wheel Position Sensor Channel 2, Malfunction

The duty cycle at channel 2 of the steering wheel position sensor (SID) drops to less than 1%, indicating a malfunction of the sensor itself, an open circuit in the wiring, or an issue with the signal processing. This causes the control software to limit or disable AutoTrac/steering functionality.

• 6110M
• 6120M
• 6130M
• 6145M
• 6155M
• 6175M
• 6195M
• 6110R
• 6120R
• 6130R
• 6145R
• 6155R
• 6175R
• 6195R
• 6215R
• 6145J
• 6165J
• 6180J
• 6205J
• 8235R
• 8245R
• 8260R
• 8285R
• 8310R
• 8335R
• 8360R
• 8400R
• 9570 STS
• 9670 STS
• 9770 STS
• 9870 STS
• 7180
• 7280
• 7380
• 7480
• 7580
• 7780
• 7980

1. 1

   Connect a John Deere diagnostic tool to monitor the real-time duty cycle of the steering wheel position sensor and verify if channel 2 is reading below the 1% threshold

2. 2

   Check the wiring harness and connectors associated with the steering wheel position sensor (B138 or B69) for signs of an open circuit, corrosion, damaged pins, or loose connections

3. 3

   Verify that the power supply to channel 2 is providing adequate current (it should not fall below 4 mA)

4. 4

   Check the steering wheel position sensor on the steering column for physical damage, wear, or improper alignment

5. 5

   Verify if there are any pending firmware updates for the XSC/SSU controller that might address signal processing bugs

1. 1

   Power down machine

   Power down the machine and ensure the electrical system is safe to work on.

2. 2

   Locate sensor

   Locate the steering wheel position sensor on the steering column.

3. 3

   Clean contacts

   Disconnect the sensor harness. Clean the contacts with electrical contact cleaner and reconnect it to rule out a poor connection.

4. 4

   Repair wiring

   If the wiring harness is damaged, repair or replace the affected section of the harness.

5. 5

   Replace sensor

   If the wiring is intact and the duty cycle remains faulty on the diagnostic tool, remove and replace the steering wheel position sensor.

6. 6

   Clear fault codes

   After replacing the sensor, use the diagnostic tool to clear the XSC/SSU fault codes.

7. 7

   Calibrate steering system

   Perform a steering system calibration. The XSC/SSU must be calibrated to recognize the new sensor's full range of motion and prevent secondary calibration fault codes (like SSU 1807.02).