10.5 | IMU & Terrain Compensation Issues

Issue	Possible Cause	Recommended Action
TerrainCross-slope compensation unavailablenot operating correctly	IMU not connecteddisconnected	Verify IMU harness connections and power supply
TerrainCross-slope compensation unavailablenot operating correctly	Incorrect IMU typenot configuredenabled within Level COMMAND	Verify the correct IMU typefunctionality is configuredenabled within Level COMMAND
Terrain compensation unavailable

IMU communication failure Verify IMU CANBUS/serial communication and harness condition Terrain compensation unavailable IMU not detected during startup Power cycle the system and verify IMU startup status Cross-slope inaccuratecontrol produces unexpected movement Incorrect IMU orientation Verify IMU orientation and mounting direction Cross-Implement is not level while reporting 0° / 0% cross-slope inaccurate IMU mounted on angled surface Mount IMU to a level reference surface aligned with the machine Cross-Implement is not level while reporting 0° / 0% cross-slope inaccurate Incorrect machinesensor offsets configured Verify receiversensor offsets are correctly measured and IMUconfigured offsetwithin configurationLevel COMMAND Cross-slope inaccurateangle displayed incorrectly Incorrect implementIMU profileassignment selectedor configuration Verify the correct implementIMU profilesource is configured within Level COMMAND TerrainReported compensationcross-slope angle is unstable Loose IMU mounting hardware Verify IMU mounting hardware is secure Reported cross-slope angle is unstable IMU mounted on flexible surface Mount IMU to a rigid surface isolated from excessive vibration TerrainReported compensationcross-slope unstableangle is erratic even when travelling over smooth ground LooseExcessive vibration at mounting location Inspect IMU mounting hardwarelocation Verifyand IMUmachine mountingvibration hardware is securesources TerrainCross-slope compensation unstablediffers between passes ExcessiveIMU vibrationmounting position shifted Inspect machineIMU mounting and mounting location for excessive vibrationalignment TerrainCross-slope responsecompensation erraticdiffers between passes IMUGNSS calibrationcorrection notquality completedunstable PerformVerify IMU/TCMRTK/DGNSS calibrationcorrection according to manufacturer instructionsstatus TerrainCross-slope responsecompensation erraticproduces inconsistent results CalibrationSensor performedoffsets ondisabled unevenVerify groundsensor offsets are enabled within Level COMMAND TCM calibration cannot be completed Poor satellite visibility Move machine to open sky area clear of obstructions TCM calibration cannot be completed Incorrect GNSS receiver configuration Verify GNSS receiver operation and correction quality TCM calibration cannot be completed Excessive machine vibration during calibration Perform calibration onwith machine stationary and hydraulics stable level ground TerrainIMU responseintermittently erraticdisconnects MachineLoose movedconnector duringor calibrationdamaged harness RepeatInspect calibrationIMU whileharnessing machineand remains stationaryconnectors TerrainIMU responseintermittently delayeddisconnects Low IMU update rate orCANBUS communication issueinstability Verify IMUCANBUS communicationnetwork qualityintegrity and update rate Terrain compensation drifts over time IMU bias drift Recalibrate the IMU/TCM Terrain compensation drifts over time Temperature stabilisation incomplete Allow the IMU sufficient warm-up time before calibrationtermination Terrain compensation differs between passes IMU mounting shifted Inspect IMU mounting and alignment Terrain compensation differs between passes GNSS correction quality unstable Verify RTK/DGNSS correction status Automatic Control performance inconsistent on slopes Cross-slope compensation disabled Verify terrain compensation is enabled within Level COMMAND Automatic Control performance inconsistent on slopes Incorrect terrain compensation source selected Verify the intended IMU/TCM source is configured TCM calibration cannot be completed Poor satellite visibility Move machine to open sky area clear of obstructions TCM calibration cannot be completed Incorrect GNSS receiver configuration Verify GNSS receiver operation and correction quality TCM calibration cannot be completed Excessive machine vibration during calibration Perform calibration with machine stationary and hydraulics stable IMU intermittently disconnects Loose connector or damaged harness Inspect IMU harnessing and connectors IMU intermittently disconnects CANBUS communication instability Verify CANBUS network integrity and termination