Hyundai Genesis Coupe Immobilizer System Wiring Diagram SD954-1 (2010)

This document is page SD954-1, "Immobilizer System (1)," a factory wiring diagram for the vehicle immobilizer (anti-theft) system. It shows two power feeds: the SNSR-2 15A fuse in the E/R (engine room) junction box RH, hot with the engine control relay on, and the MEMORY 10A fuse in the I/P junction box, hot at all times. Power routes through joint connectors JCH83 (G4KF engine) or JCL83 (G6DA engine) and connectors EC21, EM61 to the immobilizer module (connector M36), which contains Antenna(+), Antenna(-), Memory Power, Ground, and COMM Line circuits. The antenna coil around the ignition key transponder connects via connector M43 through the ignition key illumination & door warning switch. Grounding is through joint connector JM01 to ground point GM03. The COMM line runs from the immobilizer module through EM61 and EM21 to the ECM (connectors ELG-A and CHG-K) carrying IMMO. Signal and IMMO. MIL circuits, and to the instrument cluster (M11-A/M11-B) for the IMMO indicator. Wire colors shown include R, G, L, B, Y, Y/O, Y/B, with engine-specific color variations for G4KF vs G6DA engines. Photo references and cross-references to power distribution pages (SD110-4/6/7, SD120-2, SD130-2) are included.