JLG Curtis Instruments AU3019 1600258 Smart System Controller

The JLG Curtis Instruments AU3019 (part #1600258) Smart System Controller is an integrated electronic control module that manages power distribution, motor drives, and safety interlocks on aerial work platforms. Common failure points in this class of controllers include burned‑out voltage regulator ICs, damaged MOSFET arrays, and cracked PCB traces due to vibration or thermal cycling; the module often shows a total loss of output signals or intermittent fault codes after prolonged operation. Begin troubleshooting by verifying that the 48 V DC input is within spec and that all power supply rails (12 V, 24 V, etc.) are present; next inspect the PCB for visible burn marks or cracked traces, then check I/O status LEDs and any diagnostic error codes via the JLG diagnostic interface. If power and visual inspection are clean, proceed to test individual driver outputs with a multimeter and confirm that the safety interlock signals return correctly.[oss-gpt-20b]

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