If your machine has a different engine (Kubota V2403, GM 1.6L) or is a different serial range, some connector pinouts may vary. Document ID: JLG-450AJ-ELEC-001 Machine Model: 450AJ Articulated Boom Lift Applicable Serial Numbers: 03000000 to 05000499 (Pre- Tier 4 / Classic Analog & Early CAN bus) Report Date: October 26, 2023 Subject: Electrical System Architecture and Grounding Strategy 1. Introduction The JLG 450AJ utilizes a multiplexed (CAN bus) control system for platform and ground controls, but retains hardwired circuits for safety relays, engine start/stop, and emergency stop (E-stop) circuits. This report details the primary wiring paths, connector locations, and critical troubleshooting points based on the official JLG schematic (Drawing No. 1001121693 Rev. B). 2. Main System Architecture The electrical system is divided into four functional zones:
Obtain the specific schematic for your serial number from JLG’s online portal (JLG Virtual Warehouse) before performing any wire splicing, as later 450AJ models (S/N 05000500+) use a different ground control module. End of Report
This is a technical report regarding the (Serial numbers from 03000000 to 05000499) wiring diagram. Please note that JLG often releases updates for aerial platforms; this report reflects the common schematics for the ANSI market with a Deutz D2011L03i or PSL 3-cylinder engine.
