The G3‑PMS‑0025‑01 (part #13‑41361‑044) is a DINEX G3 vehicle automation I/O controller used in heavy‑truck and low‑floor bus applications to manage speed, direction, braking and other motion functions. Common failure points for this class of controllers include power‑supply decoupling failures, over‑current protection trips, burned‑out protection ICs, and degraded input/output relays or contactors due to vibration or thermal cycling. First‑check diagnostics: verify the 24 VDC/48 VDC supply voltage at the board’s input pins; inspect for burn marks, loose solder joints, or damaged capacitors on the power section; and review any stored fault codes or diagnostic LEDs that indicate I/O status or protection trips.[oss-gpt-20b]