Massey Ferguson 04.03.9E – TRANS2: Transmission Input Shaft Speed Sensor Signal Fault

The transmission controller is receiving an irregular, missing, or out-of-range signal from the transmission input shaft speed sensor.

• 7724S
• 5712SL
• 7722
• 7722S
• 5713SL
• 7720S
• 7716
• 7718
• T4
• 7715
• 5710SL
• 7726
• 7726S
• 5711SL
• 7718S
• 7719
• 7714
• 7716S
• 7720
• Tier 4 (2015-2021)
• 7715S
• 7724
• 5608
• 5609
• 5610
• 5611
• 5612
• 5613
• 6400 Series
• 6600 Series
• 6700 Series
• 7600 Series

1. 1

   Check the wiring harness leading to the sensor for moisture intrusion, dirt, and vibration damage. Ensure the connector is clean, dry, and tightly seated.

2. 2

   Check the sensor gap and inspect the tone ring for damage or debris, as the sensor must be positioned correctly to generate an accurate reading.

1. 1

   Disconnect Power

   Always disconnect the tractor's battery before starting work to prevent electrical damage to the transmission modules.

2. 2

   Locate the Sensor

   The transmission input shaft speed sensor is typically accessible from underneath the tractor.

3. 3

   Clean the Area

   Thoroughly clean the sensor mounting area and the electrical connector to prevent dirt or contaminants from falling into the transmission housing during removal.

4. 4

   Remove the Sensor

   Unplug the electrical connector and remove the faulty sensor.

5. 5

   Install the New Sensor

   Install the replacement sensor. Ensure it is positioned correctly relative to the tone ring, as the gap is critical for accurate signal generation.

6. 6

   Reconnect

   Plug the electrical connector back in, ensuring the weather-resistant seal is intact. Reconnect the battery.

7. 7

   Calibrate

   Calibration of the transmission/sensor via a diagnostic tool is typically required after installation for proper operation.