John Deere 003032.02 – CAB: Right Brake Pedal Position Sensor Fault

The Cab Control Module has detected an erratic, intermittent, or incorrect signal from the right brake pedal position sensor circuit. This unexpected signal indicates a conflict in the sensor's circuit and can disable or affect functionalities that rely on knowing the brake pedal's position, such as brake light operation, cruise control disengagement, and transmission or PTO safety interlocks.

• 8R Series
• 7R Series
• 5E Series
• 3E Series
• 8225R
• 8245R
• 8270R
• 8295R
• 8320R

1. 1

   Visually inspect the right brake pedal position sensor (located on the brake pedal assembly under the operator's console) for physical damage, such as cracks in the housing or a bent plunger.

2. 2

   Inspect the wiring harness and connectors for visible damage, corrosion, or loose connections.

3. 3

   Check for other active fault codes, specifically sensor supply voltage faults (e.g., 001079.03, 001079.04) or other brake system codes that could indicate a broader electrical issue.

4. 4

   Perform a continuity test on the sensor's internal switch by disconnecting it and pressing/releasing the pedal; it should show continuity in one state and an open circuit in the other.

5. 5

   Perform a voltage test by reconnecting the sensor and back-probing the signal wire with a multimeter set to DC volts. Voltage should be around 0.5V with the pedal released and increase smoothly to around 4.5V when depressed. Jumps or drops indicate a faulty sensor.

6. 6

   Check the wiring harness for continuity and shorts to power or ground between the sensor and the CAB/XMB controller.

1. 1

   Repair wiring and connectors

   Address any immediate issues found during inspection. Repair damaged wiring and clean dirty connectors with a quality electrical contact cleaner, ensuring a secure connection.

2. 2

   Replace the sensor

   If the sensor fails multimeter testing, disconnect its electrical connector, remove the mounting hardware, and install a new sensor. Ensure it is correctly aligned with the brake pedal mechanism before securing.

3. 3

   Calibrate the new sensor

   Access the tractor's diagnostic menu through the command center display to enter calibration mode. Fully press and release the brake pedal to teach the controller the new sensor's minimum and maximum voltage values.

4. 4

   Clear codes and verify

   Clear the fault codes from the control module's memory. Operate the tractor to verify that brake lights, cruise control, and interlocks function correctly and the 003032.02 code does not return.