John Deere 524157.31 – CCU: Right Brake Pedal Signal Fault

The controller is receiving an erratic, missing, or out-of-calibration signal from the right brake pedal position sensor.

• 6110M
• 6120M
• 6130M
• 6145M
• 6155M
• 6175M
• 6195M
• 6090MC
• 6090RC
• 6100MC
• 6100RC
• 6110MC
• 6110RC
• 6105M
• 6115M
• 6125M
• 6140M
• 6150M
• 6170M
• 6105R
• 6110R
• 6115R
• 6120R
• 6125R
• 6130R
• 6140R
• 6150R
• 6170R
• 6190R
• 6210R
• 5080R
• 5090R
• 5100R

1. 1

   Inspect the right brake pedal assembly to ensure it is not physically sticking due to debris or lack of lubrication, and ensure it returns fully to the resting position.

2. 2

   Locate the right brake pedal position sensor under the cab console, disconnect the harness, and check for bent pins, corrosion, or moisture intrusion.

3. 3

   Using a multimeter, verify that the sensor is receiving a steady 5V reference and a solid ground from the CCU. Check the signal wire for continuity back to the CCU harness to rule out an open circuit or a short-to-ground.

4. 4

   Attempt a brake pedal calibration via the tractor's CommandCenter/display monitor, as the sensor may have simply fallen out of its calibrated voltage range.

1. 1

   Prepare tractor for service

   Park the tractor on a level surface, engage the park brake, turn off the engine, and disconnect the battery ground.

2. 2

   Remove dash panels

   Remove the lower dash/console panels as necessary to gain access to the brake pedal pivot bracket.

3. 3

   Locate sensor

   Locate the right brake pedal position sensor (a rotary potentiometer attached to the pedal pivot).

4. 4

   Disconnect sensor

   Unplug the electrical connector from the sensor.

5. 5

   Remove old sensor

   Remove the mounting screws/bolts securing the sensor to the pedal bracket and slide the old sensor off the pivot shaft.

6. 6

   Install new sensor

   Install the new sensor in the exact same orientation. Secure it with the mounting hardware.

7. 7

   Reconnect harness and panels

   Reconnect the electrical harness and reinstall any removed cab panels.

8. 8

   Reconnect battery

   Reconnect the battery and turn the key to the ON position.

9. 9

   Perform calibration

   Perform a brake pedal calibration using the tractor's diagnostic display so the CCU can learn the minimum and maximum voltage sweep of the new sensor (navigate to the CCU calibration menu, fully depress the pedal, and press the CLEAR/STORE button to save the values).

10. 10

    Clear fault code and test

    Clear the stored 524157.31 fault code and test drive the tractor to verify the brakes operate correctly and the code does not return.