2010 Hyundai Genesis Coupe 2.0L Cooling Fan Wiring Diagram SD253-1 (G4KF-GSL)
Electrical wiring diagram of the engine cooling system showing cooling-fan relays, controller and coolant temperature sender circuits.
This is page SD253-1, "Cooling System (1)," a factory wiring diagram for the G4KF-GSL 2.0L engine (Hyundai Genesis Coupe 2.0T). It shows the engine cooling fan circuit beginning at the E/R (engine room) junction box LH, fed "hot at all times" through the ALT 150A multi fuse and a Cooling Fan 50A fuse, and a second feed "hot with engine control relay on" through the SNSR-1 10A fuse in the E/R junction box RH. Power routes through joint connectors JE68 and JCH83 to the Cooling Fan (LO) Relay (E52), A/Con Relay (E56), and Cooling Fan (HI) Relay (E51). The relays supply the cooling fan motor via the cooling fan controller/resistor (connector E05), grounded at GE01. Relay control sides go to the ECM: pin 65 Cooling Fan (LO) Relay Control (G wire), pin 88 Cooling Fan (HI) Relay Control (L wire), pin 87 A/Con Relay Control, pin 57 A/Con Switch ON Input, and pin 42 Blower Switch Input, linking to the Blower & A/C Control System (SD971-3/SD971-9). The engine coolant temperature sensor & sender (CHG11) feeds the ECM (pins 33 signal, 14 ground) and the A/C control module. Wire colors (R, W/B, P/B, G, L, P, O/B, O, B/W) and photo references are labeled throughout. Diagram ID EBKSD9253AN.
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Frequently asked questions
- What fuses protect the cooling fan circuit on the 2.0L Genesis Coupe?
- The ALT 150A multi fuse and a Cooling Fan 50A fuse in the E/R junction box LH (hot at all times), plus the SNSR-1 10A fuse in the E/R junction box RH, which is hot with the engine control relay on.
- Which ECM pins control the cooling fan relays?
- ECM pin 65 is Cooling Fan (LO) Relay Control (G wire) and pin 88 is Cooling Fan (HI) Relay Control (L wire). Pin 87 is A/Con Relay Control, pin 57 A/Con Switch ON Input, and pin 42 Blower Switch Input.
- What connectors are used for the cooling fan relays?
- The Cooling Fan (LO) Relay uses connector E52, the A/Con Relay uses E56, and the Cooling Fan (HI) Relay uses E51. The cooling fan controller/motor uses connector E05.
- How does the engine coolant temperature sensor connect to the ECM?
- The engine coolant temperature sensor & sender (connector CHG11) sends a signal on an O wire to ECM pin 33 (Signal, ECT) and grounds through a B/W wire to ECM pin 14 (CHG-K, Ground); the sender side goes to the A/C control module water sensor through pins 11 (M07-B), 28 (EM51), 26 (EC21) and 2 (CHG11).
- Which engine does this diagram apply to?
- The diagram is labeled G4KF-GSL 2.0L, the 2.0 liter engine.
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