Hyundai Genesis Coupe 2.0L MAPS & IATS Sensor Wiring Diagram - ECM CHG-K Pinout

This service manual page covers the Manifold Absolute Pressure Sensor (MAPS) with integrated Intake Air Temperature Sensor (IATS), connector CHG25-1, and its wiring to the ECM connector CHG-K. The circuit diagram shows the four sensor terminals: terminal 1 (MAPS #1 Signal) to ECM pin 31, terminal 2 (Sensor Power +5V) to ECM pin 30, terminal 3 (IATS Signal) to ECM pin 53, and terminal 4 (Sensor Ground) to ECM pin 74. A connection information table repeats these terminal assignments. Harness connector views show the 4-pin MAPS & IATS connector (pins 4-3-2-1) and the full 94-pin ECM connector pin layout with pins 30, 31, 53, and 74 highlighted. The Inspection procedure instructs connecting a GDS scan tool to the Data Link Connector (DLC) and measuring MAPS output voltage at idle and with ignition ON, referring to the "Specification" section for values. The Description section explains that the IATS is built into the MAPS, that the ECM uses both signals to correct calculated air quantity for air-density changes with temperature, and that the IATS is an NTC thermistor whose resistance decreases as temperature increases. Filed under the Fuel System section of the manual.