Fendt 07.1.10 – FRONT PTO ENHANCED CONTROL (A002 or A050): Signal fault or complete failure of component B002 - Sensor, front PTO speed

The tractor's computer is not receiving a valid RPM signal from the front PTO.

• 922 Vario COM III
• 924 Vario COM III
• 927 Vario COM III
• 930 Vario COM III
• 933 Vario COM III
• 936 Vario COM III
• Fendt 300 Vario
• Fendt 400 Vario (Farmer)
• Fendt 700 Vario (Favorit / S4)
• Fendt 800 Vario (Favorit / S4)
• Fendt 900 Vario (Favorit / COM III / S4)

1. 1

   Check the 12V power supply to the PTO circuit, specifically A013, fuse 36, as a blown fuse will cause a signal fault.

2. 2

   Inspect connector X151 (the direct separation point for the B002 sensor) to ensure pins are clean, free of corrosion, and securely seated.

3. 3

   Test wiring for continuity or shorts between connector X151 and the ECU using the PTOs circuit diagram.

4. 4

   Inspect the tone wheel (ratchet wheel) inside the housing for excessive metallic debris that could disrupt the magnetic Hall-effect signal.

1. 1

   Park and secure tractor

   Safely park the tractor, turn off the ignition, and engage the parking brake.

2. 2

   Remove protective guard

   Locate the front PTO assembly. Remove the protective funnel/guard from the front PTO to gain access.

3. 3

   Locate sensor

   Locate the B002 sensor, which is mounted directly at the front of the front PTO transmission housing.

4. 4

   Disconnect harness

   Disconnect the electrical harness at separation point X151.

5. 5

   Remove sensor

   Unthread and remove the faulty B002 speed sensor from the housing.

6. 6

   Install new sensor

   Thread in the new sensor. Ensure proper air gap spacing is maintained relative to the tone wheel so the magnetic sensor can read accurately.

7. 7

   Reconnect harness

   Reconnect the X151 electrical connector.

8. 8

   Reinstall guard

   Reinstall the front PTO protective funnel.

9. 9

   Test operation

   Turn on the tractor and test the front PTO to ensure the RPM speed displays correctly on the dash/terminal and the fault code clears.