Safety Warning

DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.

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HOMESERVICE MANUALSHYUNDAI2013GENESIS COUPE 2.0T PREMIUMREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 39 (ENGINE CONTROL SYSTEM (DTC TROUBLESHOOTING) (1 OF 4) - 3.8L)DTC P0112: INTAKE AIR TEMPERATURE SENSOR 1 CIRCUIT LOW INPUTSIGNAL CIRCUIT INSPECTION

2013 Hyundai Genesis Coupe 2.0T Premium

Signal Circuit Inspection

2013 Hyundai Genesis Coupe 2.0T PremiumSECTION Signal Circuit Inspection

WARNING: This page is about a different car, the 2012 Hyundai Genesis Coupe. However, it is still accessible from the selected car via links, so may be relevant.

Check voltage
1. Ignition "OFF" and disconnect IATS connector.
2. Ignition "ON"
3. Measure voltage between signal terminal of IATS harness connector and chassis ground.
  Specification: Approx. 3.2V
  
  Fig 1: Measuring Voltage Between Signal Terminal Of IATS Harness Connector & Chassis Ground
  Courtesy of HYUNDAI MOTOR CO.
4. Is the measured voltage within specification?
  YES
  - Go to "COMPONENT INSPECTION " procedure.
  NO
  - Go to "Check short to ground in harness " procedure.
Check short to ground in harness
1. Ignition "OFF" and disconnect IATS connector and ECM connector.
2. Measure resistance between signal terminal of IATS harness connector and chassis ground. (Measurement "A")
3. Measure resistance between signal and ground terminals of IATS harness connector. (Measurement "B")
4. Measure resistance between signal terminal of IATS harness connector and ground terminal of MAFS harness connector.
  (Measurement "B")
  
  Specification: Infinite
  
  Fig 2: Measuring Resistance Between Control Terminal Of IATS Harness Connector & Chassis Ground (Measurement "A")
  Courtesy of HYUNDAI MOTOR CO.

RENDER: 1.0x

NO RELATED

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

• You smell fuel, burning insulation, or see smoke.
• Brakes feel soft, pull hard to one side, or make grinding noises.
• The engine overheats, stalls repeatedly, or misfires under load.
• You are missing required tools, torque specs, or safe lifting equipment.
• You are not confident in the next step or safety outcome.