Massey Ferguson FA135 – Suspension / Autotronic: Issue With Signal Voltage From Suspended Front Axle Position Sensor During Calibration (SUSPENSION)

The system detects that the calibration value from the suspended front axle position sensor (X166) is 'too low'.

• 7616
• 5612
• 7622
• Interim Tier 4 (2012-2015)
• 7614
• 5611
• 7615
• 5610
• 5613
• 7620
• 5609
• 7618
• 5608
• 7619
• 7626
• 7624
• 7617
• 8650
• 8670
• 8690

1. 1

   Verify Sensor Values: Check the signal voltage coming from the X166 Suspended Front Axle Position Sensor.

2. 2

   Inspect Wiring and Connections: Check the wiring harness and connectors for the X166 sensor for open circuits, short circuits to +12V, or short circuits to earth.

3. 3

   Check Axle Load: Ensure the front axle is not overloaded, as this can interfere with suspension travel and calibration.

1. 1

   Relieve Load

   Remove any heavy implements or front weights to ensure the front axle is not overloaded.

2. 2

   Inspect Component X166

   Locate the Suspended Front Axle Position Sensor (X166) on the front axle assembly. Inspect it for physical damage, loose mounting, or linkage binding.

3. 3

   Repair Wiring

   If the diagnostic checks revealed an open or short circuit in the sensor's harness, repair or replace the damaged wiring.

4. 4

   Replace Sensor

   If the wiring is intact but the signal voltage remains out of specification (causing the calibration to read too low), replace the X166 position sensor.

5. 5

   Recalibrate

   Run the suspended front axle calibration routine.

6. 6

   Dealer Intervention

   If the 'Calibration in progress or failed' message persists, or if there is an internal 'Error in one of the components,' contact the dealer for proprietary software calibration or module replacement.