John Deere 524173.03 – OIC, CAB, TCU, EPC, or PTQ: Clutch Pedal Sensor Circuit Voltage High

The control unit measures a voltage of more than 4.7 to 4.8 volts at the signal input from Channel 1 of the clutch pedal potentiometer. This almost always indicates a loss of ground to the sensor, a short to power in the signal wire, or an internal failure of the potentiometer itself.

• 6110M
• 6120M
• 6130M
• 6145M
• 6155M
• 6175M
• 6195M
• 6110R
• 6120R
• 6130R
• 6145R
• 6155R
• 6175R
• 6195R
• 6215R
• 7030 Series
• 7630
• 7730
• 7830
• 7930
• 8R / 8RT Series
• 8245R through 8400R
• 9030 & 9R/9RT Series
• 9330
• 9430
• 9530
• 9630
• 9470RT
• 9520RT
• 9570RT
• 5G / 5E / 5M Series
• 5080G
• 5090G
• 5100G
• 6010 to 6910 Series

1. 1

   Locate the clutch pedal potentiometer on the clutch pedal linkage and check for obvious physical damage, packed dirt, or moisture intrusion.

2. 2

   Disconnect the sensor and inspect the pins for corrosion, bent terminals, or loose wire crimps.

3. 3

   Turn the key ON (engine off) and measure the 5V reference wire at the connector to ensure it reads a steady 5.0V.

4. 4

   Measure the ground wire for continuity to the chassis/module ground (a high-resistance or open ground is the most common cause).

5. 5

   Ensure the signal wire is not shorted to a 12V power source.

6. 6

   If the wiring harness, 5V reference, and ground are all perfectly intact, conclude the potentiometer has failed internally.

1. 1

   Power Down

   Turn off the tractor, remove the key, and disconnect the battery ground if you will be repairing harness wires.

2. 2

   Access the Sensor

   Remove any lower dash or floor console trim panels required to access the clutch pedal pivot linkage.

3. 3

   Remove the Old Sensor

   Unplug the electrical connector. Remove the mounting screws/bolts holding the rotary sensor to the pedal bracket. Slide the sensor off the linkage shaft.

4. 4

   Install the New Sensor

   Slide the new potentiometer onto the linkage, ensuring the rotary tang/slot aligns perfectly with the pedal shaft. Do not force it, as the internal plastic sweeps are fragile.

5. 5

   Secure and Reconnect

   Tighten the mounting hardware and plug the electrical connector back in.

6. 6

   Calibrate the New Sensor

   Turn the key ON and clear the inactive fault codes. You must perform a clutch pedal calibration procedure (often done via the tractor's CommandCenter display or by a dealer using Service ADVISOR) so the control module can learn the new minimum and maximum voltage endpoints of the replacement sensor.