Hyundai Genesis Coupe 2.0L Theta II MFI Wiring Diagram SD313-1 - O2 & Injectors

This is page SD313-1 of the MFI (Multiport Fuel Injection) Control System wiring diagram for a Hyundai with the G4KF-GSL Theta II 2.0L engine — consistent with the 2010 Genesis Coupe 2.0T. The diagram shows the hot-at-all-times power distribution from the engine room junction box (RH): the ECU-1 10A and ECU 30A fuses feeding the Engine Control Relay (connector CHG99), the SNSR-1 10A, INJECTOR 15A, and SNSR-2 15A fuses, and the F/PUMP 20A fuse feeding the Fuel Pump Relay (CHG97). It traces the fuel pump circuit through connectors EC21, EF11, and F39 to the fuel sender/pump motor and ground GF03. Component circuits include the upstream oxygen sensor (CHG16), downstream oxygen sensor (CHG17), and injectors #1–#4 (CHG24-1 through CHG24-4), each with pin numbers and wire colors. All signals terminate at the ECM (connector CHG-K) with pin assignments for memory power (64), engine control relay control (38), O2 sensor signals/grounds/heaters, injector drivers (25, 26, 27, 24), and fuel pump relay control (70). Cross-references point to SD313-2, SD313-3, SD450-1 (automatic transaxle), and component photo callouts (Photos 11, 16, 18, 19, 54, 87, 88).