SECTION 5 - JLG CONTROL SYSTEM
31215079
5-9
5.3
DIAGNOSTIC TROUBLESHOOTING CODES
(DTC’S) AND FLASH CODES DESCRIPTION
DTC
Code
Flash
Code
Description
Item Check List
001
0
0 "Everything Ok"
• No issues detected
004
0
0 "Driving At Cutback - Above Elevation"
• The platform is determined to be elevated (Reference platform height
calculation section).
005
0
0 "Drive & Lift Up Prevented - Tilted & Elevated"
• Platform is elevated, and machine tilt exceeds the model and market
specific limits.
009
0
0 "Drive Prevented - Elevated Above Drive Cutout Height"
• Attempting to drive with the platform elevated to over 32 feet. The
control system prevents driving.
• Lower the platform to under 32 feet.
0041
0
0 "Front Left Leveling Jack At End Of Stroke"
• Front Left Leveling Jack cylinder has reached end of stroke.
• Check if the cylinder is at end of stroke (normal operation).
• Check the wiring to the Front Left Leveling Jack end of stroke switch.
0042
0
0 "Front Right Leveling Jack At End Of Stroke"
• Front Right Leveling Jack cylinder has reached end of stroke.
• Check if the cylinder is at end of stroke (normal operation).
• Check the wiring to the Front Right Leveling Jack end of stroke switch.
0043
0
0 "Rear Left Leveling Jack At End Of Stroke"
• Rear Left Leveling Jack cylinder has reached end of stroke.
• Check if the cylinder is at end of stroke (normal operation).
• Check the wiring to the Rear Left Leveling Jack end of stroke switch.
0044
0
0 "Rear Right Leveling Jack At End Of Stroke"
• Rear Right Leveling Jack cylinder has reached end of stroke.
• Check if the cylinder is at end of stroke (normal operation).
• Check the wiring to the Rear Right Leveling Jack end of stroke switch.
0045
0
0 "Engine Shutdown Commanded - Check Engine Sensors"
• The engine coolant temperature is high or the oil pressure is low. The
control system shuts down the engine.
• DIESEL - Check the engine oil pressure and engine coolant temperature
sensors for damage.
• Check the engine oil pressure input J2-17 (should be low when not
overheating).
• Check the engine coolant input J2-25 (resistive).
211
2
1 "Power Cycle"
• Power was cycled ON
212
2
1 "Keyswitch Faulty - Platform & Ground Active Together"
• The Platform and Ground mode switches are both high.
• Check the Ground Module inputs for Ground Mode (J4-4) and Platform
Mode (J1-2).
221
2
2 "Function Problem - Horn Permanently Selected"
• Horn switch input is closed during power up.
223
2
2 "Function Problem - Drive & Lift Active Together"
• Drive and Lift Digital Inputs on the Platform Control Module are HIGH
simultaneously for 1000ms.
224
2
2 "Function Problem - Steer Left Permanently Selected"
• Left steer select switch input is closed during power up.
225
2
2 "Function Problem - Steer Right Permanently Selected"
• Right steer select switch input is closed during power up.
228
2
2 "Function Locked Out - Accelerator Not Centered"
• Joystick is not centered during start-up of the machine. Joystick signal
must remain at neutral voltage for 1000 ms after start-up or fault will
activate.
229
2
2 "Function Problem - Trigger Permanently Closed"
• The Trigger Switch CAN message and LRT Ground Module Trigger DI are
conflicting with each one another.
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