John Deere 523826.01 – XSC / SSU: Wheel Angle Sensor Channel 1, Voltage Too Low

Voltage at the signal line of channel 1 of the Wheel Angle Sensor (WAS) falls below 0.5 volts for longer than 320 milliseconds, suggesting a potential issue with the sensor itself, signal processing, or an open circuit in the channel 1 wiring.

• 6110M
• 6120M
• 6130M
• 6145M
• 6155M
• 6175M
• 6195M
• 6110R
• 6120R
• 6130R
• 6145R
• 6155R
• 6175R
• 6195R
• 6215R
• 6000 series tractors
• 7000 series tractors
• 8000 series tractors
• 9000 series tractors
• 7630
• 7730
• 7830
• 7930
• 8235R
• 8260R
• 8285R
• 8310R
• 8335R
• 8360R
• 8R series
• 9330
• 9430
• 9530
• 9630
• 4930 sprayer
• 4940 sprayer
• R-Series sprayers
• S-Series combines
• 8000 series forage harvesters
• 9000 series forage harvesters
• John Deere AutoTrac Controller (Raven)

1. 1

   Restart the Machine: Verify if the active DTC reappears to see if the code can be corrected by resetting the communication messages.

2. 2

   Inspect Power Supply & Open Circuits: Use diagnostic tools (like Service ADVISOR) to check for continuity in the power supply circuit. Ensure the voltage to channel 1 of the WAS does not fall below 0.5 volts.

3. 3

   Verify Sensor Connections: Inspect the wiring harness and connectors related to the Wheel Angle Sensor for signs of damage, loose connections, or corrosion.

4. 4

   Monitor Sensor Voltage: Use diagnostic tools to monitor the voltage levels of the sensor in real-time to identify deviations from the normal operating range.

5. 5

   Check Sensor Orientation: Ensure the sensor is securely mounted and has not been physically knocked out of alignment, which can cause signal faults.

1. 1

   Repair Wiring

   If the diagnostic checks reveal an open circuit, corrosion, or damaged wiring harness leading to the WAS, repair or replace the affected wiring/connector.

2. 2

   Replace the Sensor

   If the wiring is intact but the voltage remains below 0.5V, the Wheel Angle Sensor is defective and must be replaced with a new, genuine part.

3. 3

   Mount in Correct Orientation

   When installing the new sensor, ensure it is mounted in the correct orientation (installing it backward will immediately throw a 523826.02 code for reversed polarity/orientation).

4. 4

   Recalibrate the Sensor

   After replacing the sensor or repairing the harness, you must recalibrate the Wheel Angle Sensor using the John Deere diagnostic system.

5. 5

   Update Software

   Check for and install any available firmware updates for the XSC/SSU control software to address potential signal processing bugs.