John Deere 003033.13 – CAB: Left Brake Pedal Position Sensor Not Calibrated

The control unit has detected that the calibration for the left brake pedal position sensor has not been performed or is invalid. The sensor's stored values do not correctly correspond to the physical position of the brake pedal, which can impact the proper operation of the braking system.

• 3033R
• 3038R
• 3039R

1. 1

   Inspect the wiring harness and connectors associated with the left brake pedal position sensor for any signs of damage, corrosion, or loose connections.

2. 2

   Check that the brake pedal moves freely through its full range of motion without any binding or obstruction, and returns to its neutral position correctly.

3. 3

   Verify that the sensor is receiving the correct voltage from the control unit.

4. 4

   Check for any other active fault codes that may be related to the braking system or other control units.

1. 1

   Access calibration mode

   Use a diagnostic scanner to navigate to the CAB controller's calibration menu, or use the specific sequence of key turns and button presses on the machine's display.

2. 2

   Initiate calibration

   Select the option for brake pedal or service brake calibration.

3. 3

   Set disengaged position

   With the brake pedal fully released, follow the prompt to save the 'disengaged' or 'zero' position.

4. 4

   Set engaged position

   Fully depress the brake pedal and hold it to save the 'fully engaged' position.

5. 5

   Verify and save

   Allow the system to verify the new calibrated values, then confirm and save the calibration.

6. 6

   Cycle power

   Turn the machine's ignition off for a short period to allow the new settings to be stored correctly.

7. 7

   Clear fault codes

   After a successful calibration, clear the 003033.13 fault code using a diagnostic tool.