Drive Cutout Active Above Elevation Threshold
The JLG-6017-14 (ADE) diesel fault code means: Drive Cutout Active Above Elevation Threshold. This is a serious severity code.
- Keep driving?
- Yes, but fix soon
- DIY difficulty
- moderate
- Estimated cost
- $50-$400 DIY (sensor and connector repair); $300-$1,200 at a JLG-authorized service shop including labor, sensor replacement, and controller calibration
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Common Symptoms
- Platform LCD displays fault code 6017-14 and drive speed is reduced or stopped
- Machine will not drive at full speed with the platform elevated above the high-speed threshold
- Boom or scissor is raised but normal drive travel is disabled or limited to creep speed
- Drive controls feel sluggish or non-responsive from the platform control box
- ADE controller flashes or holds a drive cutout warning on the display
- Machine may drive only at creep speed even after the operator lowers the boom or platform
- Alarm or warning indicator lights up on the ground control panel simultaneously
Probable Causes (Ranked by Likelihood)
- Platform or boom is genuinely above the high-speed drive height limit and the ADE is functioning correctly -- no fault in hardware Very Likely
- Height or angle sensor (elevation sensor or tilt sensor) stuck, out of calibration, or returning an incorrect high-elevation signal even when the platform is lowered Likely
- Wiring harness damage, loose connector, or corroded pins at the elevation sensor or TCON input causing a false elevated reading Likely
- ADE or TCON software configuration has incorrect drive cutout height parameter set -- possible after a controller replacement or software update Possible
- Hydraulic sensor or boom angle feedback potentiometer worn or drifted out of spec, causing the controller to see a higher position than actual Possible
- Damaged or misadjusted limit switch on the elevation sensing mechanism, permanently signaling above-threshold height Possible
- Fault stored in ADE memory from a previous event that has not been cleared, re-triggering the cutout even after the condition is resolved Less Likely
Step-by-Step Diagnostic Procedure
Start at the ground controls. Use the platform LCD to confirm 6017-14 is active and note whether it is current or stored. Connect JLG Analyzer software via the data link at the ground controls to read real-time elevation sensor values and compare to the configured drive cutout height threshold.
Fully lower the boom or platform to the fully stowed or transport position. Cycle the key OFF and back ON. If the fault clears and normal drive speed returns, the machine was simply above its threshold and the ADE is working correctly. No repair needed -- operator education may be sufficient.
If the fault persists after full stowage, inspect the elevation or height sensor physically. On boom lifts, this is typically a rotary potentiometer or angle sensor mounted at the main boom pivot. On scissor lifts, check the scissor angle or height sensor near the scissor stack base. Look for physical damage, bent brackets, or debris jamming the sensor arm.
Check the sensor connector and harness. Unplug the elevation sensor connector and inspect all pins for corrosion, bent terminals, or pushed-back pins. Wiggle the harness while watching the fault status on the LCD or JLG Analyzer -- if the fault code flickers or changes, you have an intermittent wiring issue.
With a multimeter, measure supply voltage at the sensor connector. You should see 5 VDC reference on the signal wire (check the JLG service manual for your specific model pin assignments). Then measure the signal output voltage across the sensor range of motion -- values should sweep smoothly from low to high as the boom raises. A flat signal, erratic signal, or a signal stuck at full voltage indicates a failed sensor.
If sensor voltage checks out, use JLG Analyzer software via the data link at the ground controls to view the configured drive cutout elevation parameter. Compare it against the factory spec for your model. A parameter set too low (too conservative) after a controller swap or update will trigger this fault at normal working heights. Correct with EZcal or JLG Analyzer software per the service manual.
Clear stored faults using JLG Analyzer software via the data link at the ground controls after any repair. Cycle power and perform a full function test -- raise the platform to various heights and confirm drive transitions correctly from full speed to creep at the correct threshold height, and back to full speed when lowered.
If the fault cannot be resolved after sensor replacement and parameter verification, suspect an internal ADE or TCON controller fault. At this point, escalate to a JLG-authorized service shop for controller diagnostics and replacement, as further work requires dealer-level tooling.
Frequently Asked Questions
What does JLG code 6017-14 mean?
It means the ADE controller detected that the platform or boom is above the height at which full-speed drive is allowed. JLG machines are designed to cut drive speed down to creep when the platform is elevated above a set threshold -- this is a safety feature to prevent tip-overs while traveling with a raised load. Code 6017-14 is the ADE reporting that this cutout is active. If the machine is actually elevated, this is normal behavior. If it triggers while the machine is fully stowed, you have a sensor or wiring problem.
Can I still drive the machine with code 6017-14 active?
Yes, but only at creep speed. The ADE allows limited drive movement so the operator can maneuver the machine to a safe lowering position. You should not attempt to travel any significant distance at creep with the boom elevated. Lower the platform fully and clear the fault before returning to normal operation.
How much does it cost to fix code 6017-14?
If the machine was simply above its threshold and the fault clears after lowering, there is no cost. If you have a bad elevation sensor, plan on $50 to $150 for the sensor part and a couple hours of labor, putting a DIY repair in the $50 to $200 range. A JLG-authorized service shop repair with diagnostics, sensor replacement, and recalibration typically runs $300 to $1,200 depending on the model and labor rates in your area.
Why does code 6017-14 still show after I lower the platform?
If the fault stays active after the boom or scissors are fully stowed, the ADE is still receiving a signal telling it the machine is elevated. The most common cause is a failed or out-of-calibration elevation sensor, a loose or corroded connector at the sensor, or a stored fault in ADE memory that needs to be cleared with JLG Analyzer software via the data link at the ground controls. Cycle the key first -- sometimes a power cycle clears a stored code. If it comes back immediately, start with the sensor and harness inspection.