Massey Ferguson 0B.01.22 – Mid Mount Valve Module: Issue With Calibration OF Valves
Issue description
Triggered when the tractor's onboard diagnostic system detects that the Loader Mid Mount Electro Valve has lost its calibration parameters or failed a calibration routine.
Applies to these machines
40 machines- 5710SL
- 5711SL
- 5712SL
- 5713SL
- T4
- 4707
- 4708
- 4709
- 4710
- 5608
- 5609
- 5610
- 5611
- 5612
- 5613
- 7614
- 7615
- 7616
- 7618
- 7619
- 7620
- 7622
- 7624
- 7626
- 7714
- 7715
- 7715S
- 7716
- 7716S
- 7718
- 7718S
- 7719
- 7720
- 7720S
- 7722
- 7722S
- 7724
- 7724S
- 7726
- 7726S
Check the cause
Check Spool Position Sensors: Verify the spool position sensor values using a diagnostic tool. Faulty sensors will prevent successful calibration.
Inspect Solenoid Electrical Draw: Check the loader mid-mount electro valve solenoids for open circuits, low amp draw, or high amp draw (which would trigger related codes like 0B.01.01 through 0B.01.12).
Check Cab Switches: Verify the voltage from the loader selector switch in the cab.
Verify Communication: Ensure there is no communication loss between the Dash and the Mid Mount Valve Module (Code 0B.01.16).
Hydraulic Fluid: Ensure the tractor's hydraulic fluid is at the correct level and warmed up to operating temperature, as cold fluid can cause calibration failures.
Repair steps
Warm Up the System
Start the tractor and operate the hydraulics until the fluid reaches normal operating temperature.
Connect Diagnostic Tool
Connect the AGCO Electronic Diagnostic Tool (EDT) to the tractor's diagnostic port. (On some models, calibration can be initiated via the dashboard screen menus).
Initiate Calibration
Navigate to the Mid Mount Valve Module settings and select the valve calibration routine.
Cycle the Valves
Follow the on-screen prompts to cycle the loader joystick through its full range of motion (raise, lower, dump, curl) to allow the module to learn the end-stops and spool travel limits.
Inspect Wiring
If the calibration fails or the code immediately returns, inspect the wiring harness connecting the mid-mount valve block to the main chassis harness for chafing or corrosion.
Replace Faulty Components
If the wiring is intact but the valve refuses to calibrate, use a multimeter to test the individual electro-hydraulic solenoids and spool position sensors on the valve block. Replace any component that tests out of spec.
Clear Codes
Once the repair is made and calibration is successful, clear the DTCs from the system.
Parts you might need
(7)Loader Mid Mount Electro Valve Solenoid
3794719M2Controls the hydraulic flow for the loader functions. Often the culprit if the valve cannot physically move to the commanded position during calibration.
Loader Mid Mount Electro Valve Solenoid
7302601101Controls the hydraulic flow for the loader functions. Often the culprit if the valve cannot physically move to the commanded position during calibration.
Loader Mid Mount Electro Valve Solenoid
3909720M91Controls the hydraulic flow for the loader functions. Often the culprit if the valve cannot physically move to the commanded position during calibration.
Loader Mid Mount Electro Valve Solenoid
ACP0626600Controls the hydraulic flow for the loader functions. Often the culprit if the valve cannot physically move to the commanded position during calibration.
Mid Mount Valve Module / Valve Block
The main hydraulic block that houses the spools, sensors, and solenoids.
Spool Position Sensor
Monitors the physical location of the valve spool. If this fails, calibration is impossible.
Mid-Mount Valve Wiring Harness
Connects the valve module to the tractor's main harness.
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