10.3 | Hydraulic Control Issues

 

Issue	Possible Cause	Recommended Action
No hydraulic movement	IncorrectHydraulic valveharness interface selecteddisconnected	Verify all ECU and hydraulic interface configurationharness connections
No hydraulic movement	Hydraulic controller not powered

Verify tractor SCV system or external valve controller power No hydraulic movement Incorrect hydraulic interface selected Verify the configured hydraulic interface type within Level COMMAND No hydraulic movement Hydraulic outputs disabled Verify COMMAND outputs are enabled and Automatic Control is Armed No hydraulic movement Tractor hydraulic remotes disabled Verify tractor SCVs/remotes are enabled and assigned correctly No hydraulic movement External valve controller offline Verify VM controller or external valve module communication Raise/lower functions reversed Incorrect valve polarity or hydraulic configuration Verify hydraulic output polarity and configuration Raise/lower functions reversed Hydraulic hoses connected incorrectly Verify hydraulic hose routing and plumbing orientation Hydraulic outputs operate incorrectly Incorrect valve type selected Verify the configured hydraulic interface matches the installed valve system Hydraulic outputs operate incorrectly Incorrect CANBUS interface configuration Verify CANBUS/J1939 hydraulic interface configuration Hydraulic movement unstable Incorrect calibration values Recheck hydraulic calibration and tuning settings SlowHydraulic movement unstable Hydraulic gain values too aggressive Reduce hydraulic responsegain or aggressiveness settings Hydraulic movement unstable FlowHydraulic oil temperature unstable Allow hydraulic oil temperature to stabilise before calibration Hydraulic movement unstable Air present in hydraulic system Verify hydraulic system has been bled correctly Hydraulic movement slow or unresponsive Hydraulic flow limits too low Verify tractor hydraulic flow settings Hydraulic movement slow or unresponsive Engine RPM too low Operate machine at recommended engine RPM Hydraulic movement slow or unresponsive Hydraulic pressure insufficient Verify tractor hydraulic pressure and system operation Hydraulic movement delayed Excessive deadband configuration Verify deadband and response tuning settings Hydraulic movement continues after command released Hydraulic valve sticking Inspect hydraulic valve operation and cleanliness Hydraulic movement continues after command released Incorrect valve calibration Recheck valve calibration settings Hydraulic outputs noisy or erratic Electrical noise or poor grounding Verify ECU and valve grounds are secure Hydraulic outputs noisy or erratic Damaged PWM/analog wiring Inspect hydraulic output harnessing for damage Hydraulic outputs noisy or erratic Incorrect PWM frequency configuration Verify PWM frequency matches valve requirements No external valve response Incorrect VM430/431 configuration Verify external valve controller setup and addressing No external valve response Incorrect J1939 configuration Verify J1939 network settings and communication Hydraulic response differs between directions Unequal flow settings Verify raise/lower hydraulic flow configuration Hydraulic calibration cannot be completed Incorrect machine setup during calibration Perform calibration on stable level ground Hydraulic calibration cannot be completed Incorrect valve wiring Verify valve output wiring and polarity Automatic Control disengages during operation Hydraulic response outside configured limits Verify hydraulic tuning and response stability Automatic Control performance inconsistent Incorrect implement profile selected Verify correct implement configuration within Level COMMAND