John Deere 522190.04 – PTQ: Low Voltage On Signal Line From Range E-F Position Sensor Command Quad.

The system has detected that the position sensor for the E/F slider (which monitors the physical position of the transmission range shift mechanism) is returning a voltage that is too low. This typically indicates a short to ground, an open circuit in the signal wire, or a completely failed sensor.

• 6110M
• 6120M
• 6130M
• 6145M
• 6155M
• 6175M
• 6195M
• 5R Series
• 7R Series

1. 1

   Inspect the wiring harness running from the PTQ module to the transmission range box for chafing, pinched wires, or melted insulation that could cause a short to ground.

2. 2

   Disconnect the Range E-F Position Sensor and inspect the pins for corrosion, moisture, or pushed-out terminals. Do the same at the PTQ module connector.

3. 3

   Verify that the sensor is receiving its proper reference voltage (usually 5V) and has a clean ground. If the reference voltage is missing, the signal line will naturally read low.

4. 4

   Transmission Calibration: PTQ module documentation notes that transmission calibrations are highly sensitive to sensor readings. If the sensor is replaced or wiring is repaired, a transmission calibration will likely be required.

1. 1

   Safely park the machine, engage the parking brake, and shut off the engine.

   Safely park the machine, engage the parking brake, and shut off the engine.

2. 2

   Locate the Range E-F Position Sensor.

   Locate the Range E-F Position Sensor on the CommandQuad transmission range box (Section 50, Group 30 of the repair manual).

3. 3

   Disconnect the electrical connector from the sensor.

   Disconnect the electrical connector from the sensor.

4. 4

   Remove the retaining bolts/hardware.

   Remove the retaining bolts/hardware securing the sensor to the transmission housing.

5. 5

   Install the new sensor.

   Install the new sensor and torque to OEM specifications.

6. 6

   Reconnect the wiring harness.

   Reconnect the wiring harness.

7. 7

   Clear the fault code.

   Clear the 522190.04 fault code via the monitor or diagnostic tool.

8. 8

   Perform a transmission calibration.

   Perform a transmission calibration to ensure the PTQ module learns the new sensor's E/F slider voltage parameters.