Hyundai Genesis Coupe 2.0L G4KF MFI Control Wiring Diagram SD313-3 - Ignition Coils & CAN
Electrical wiring diagram of the MFI control system showing CAN data links, ignition coils, condenser and engine control relay circuits.
This is page 3 of the MFI (Multiport Fuel Injection) Control System wiring diagram, sheet SD313-3, for the G4KF-GSL 2.0L turbo engine (Hyundai Genesis Coupe). The diagram shows ignition coil and CAN communication wiring. Power feeds come from the Engine Control Relay (referenced on SD313-1) through two fuses in the E/R Junction Box RH: ECU-2 20A and IGN COIL 20A, then through joint connector JCH81 (PHOTO 19). Four ignition coils (connectors CHG15-1 through CHG15-4 with immobilizer, or CHG18-1 through CHG18-4 without immobilizer, PHOTO 16) and a condenser (CHG19, PHOTO 15) are wired to ECM pins 1, 16, 31, and 46 with wire colors W, P, Br, and L; cylinder assignments differ between IMMO and non-IMMO versions. Shield grounds (black wires) terminate at ground point GHG03 (PHOTO 15). The left side shows CAN High/Low lines from the instrument cluster (SD313-4) passing through joint connectors JM03, JM06, MF11, JABAG, EF11, JE67, EC21, and JCH01 (with M/T vs A/T routing) to ECM pins 77 (High) and 78 (Low). Data link details reference SD200-1 and SD200-2. Photo callouts identify connector locations.
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Frequently asked questions
- What fuses power the ignition coils and ECU on the 2.0L G4KF Genesis Coupe?
- Per diagram SD313-3, the ECU-2 20A fuse and the IGN COIL 20A fuse in the E/R Junction Box RH, fed from the Engine Control Relay (see SD313-1).
- Which ECM pins control the ignition coils?
- ECM pin 1 (W wire) = CYL.4 with IMMO / CYL.1 without IMMO; pin 16 (P) = CYL.2 with IMMO / CYL.3 without; pin 31 (Br) = CYL.1 with IMMO / CYL.4 without; pin 46 (L) = CYL.3 with IMMO / CYL.2 without. Pin 2 is shield ground.
- What are the ignition coil connector designations?
- CHG15-1 through CHG15-4 for vehicles with immobilizer, or CHG18-1 through CHG18-4 without immobilizer (connector location PHOTO 16). The condenser is CHG19 (PHOTO 15).
- Which ECM pins carry the CAN bus lines?
- Pin 77 is CAN High and pin 78 is CAN Low, routed from the instrument cluster (SD313-4) through joint connectors JM03, JM06, MF11, JABAG, EF11, JE67, EC21 and JCH01.
- Where do the ignition coil shield grounds terminate?
- The shield ground wires (black, B) join and terminate at ground point GHG03, shown in PHOTO 15, and connect to ECM pin 2 (Shield Ground).
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