John Deere 3032.04 – OIC or XMB: Sensor Unit for Right Brake Pedal, Voltage Too Low / Right Brake Pedal Position Sensor Circuit Fault

The voltage at the signal input of the right brake pedal potentiometer has dropped below 0.25 volts. This abnormally low voltage suggests a problem with the signal lead (such as a short to ground or open circuit), a loss of the potentiometer's supply voltage, or an internal failure of the sensor itself.

• 6110M
• 6120M
• 6130M
• 6145M
• 6155M
• 6175M
• 6195M
• 6110R
• 6120R
• 6130R
• 6145R
• 6155R
• 6175R
• 6195R
• 6215R
• 8R Series
• 8RT Series
• 8RX Series
• 8245R
• 8270R
• 8295R
• 8320R
• 8345R
• 8400R
• 7R Series
• 7210R
• 7230R
• 7310R
• 6M Series
• 6R Series

1. 1

   Inspect the wiring harness leading to the right brake pedal sensor for pinched wires, chafing, or loose connector pins that could cause a voltage drop or short to ground.

2. 2

   Ensure that the potentiometer is receiving the correct 5V reference supply voltage from the cab controller.

3. 3

   Use a multimeter to back-probe and measure the voltage output of the right brake pedal sensor (must smoothly transition as the pedal is depressed and released, and never drop below 0.25V).

4. 4

   Verify that the right brake pedal is functioning correctly, is not stuck or mechanically hindered, and lubricate the pedal pivot if necessary.

1. 1

   Power Down

   Turn off the machine and disconnect the battery to prevent electrical spikes.

2. 2

   Locate the Sensor

   Locate the right brake pedal position sensor, which is mounted directly to the brake pedal linkage/valve assembly under the cab console.

3. 3

   Remove the Sensor

   Disconnect the electrical harness connector from the sensor. Remove the mounting screws/bolts securing the sensor to the pedal assembly.

4. 4

   Install the New Sensor

   Mount the replacement sensor in the exact orientation as the old one and secure the hardware. Reconnect the electrical harness.

5. 5

   Calibrate the Sensor

   Reconnect the battery and power on the machine. You will likely need John Deere Service ADVISOR to calibrate the new sensor's sweep.

6. 6

   Clear Codes

   Clear the 003032.04 code from the OIC/XMB module and test the brake pedals to ensure the code does not return.