Fendt Y035 – ECU EMR2: Rotary Position Sensor Issue

The EMR actuator is reporting a fault related to its internal rotary position sensor, indicating that the actuator's reported position is outside of the expected range. The Engine Management Regulation (EMR) system uses this actuator to control critical engine functions, and this failure will prevent the engine from starting.

• Vario 1038
• Vario 1042
• Vario 1046
• Vario 1050
• Vario 309
• Vario 310
• Vario 311
• Vario 312
• Vario 313
• Vario 411
• Vario 412
• Vario 413
• Vario 414
• Vario 415
• Vario 512
• Vario 513
• Favorit 700 Series
• Favorit 900 Series
• Farmer 400 Series
• Vario 700 Series
• Vario 800 Series
• Vario 900 Series

1. 1

   Power cycle the tractor by turning the ignition completely off and then on again to see if the fault is intermittent

2. 2

   Use the tractor's on-board display to confirm that Y035 is the active fault code

3. 3

   Carefully inspect the EMR actuator and its electrical connector for any signs of physical damage, corrosion, or loose connections

4. 4

   Check the wiring harness leading to the EMR actuator for any visible damage, chafing, or breaks

5. 5

   Connect the SERDIA/FENDIAS diagnostic tool and follow the EMR troubleshooting flowchart

6. 6

   Command the actuator via the SERDIA/FENDIAS diagnostic tool and verify if it responds correctly

7. 7

   Perform continuity and short-circuit tests on the harness between the ECU and the actuator using an EMR2 system wiring diagram

1. 1

   Confirm fault source

   Use the preliminary diagnostic checks and SERDIA/FENDIAS active tests to isolate the problem between the actuator, the wiring, or the ECU.

2. 2

   Repair wiring harness

   If wiring tests indicate a fault, repair or replace the damaged sections of the harness between the ECU and the EMR actuator.

3. 3

   Replace EMR actuator

   If the actuator is determined to be faulty, replace the complete EMR actuator unit. The rotary position sensor is internal and cannot be replaced separately.

4. 4

   Clear fault codes

   After replacement, use the tractor's console or the SERDIA diagnostic tool to clear all stored fault codes.

5. 5

   Calibrate system

   If required, use the SERDIA diagnostic tool to perform any necessary calibrations for the engine or transmission control systems after replacing the actuator.