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Home >> Hyundai >> 2007 >> Entourage GLS >> Repair and Diagnosis (Single Page) >> Engine Performance >> System >> Engine Control System Diagnosis (2 Of 2) >> DTC Troubleshooting Procedures >> DTC P1112 Intake Air Temperature Sensor Circuit Short - Intermittent Low Input >> Signal Circuit Inspection

Signal Circuit Inspection

  1. Check voltage
    1. IG "OFF" and disconnect IATS connector.
    2. IG "ON" and ENG "OFF"
    3. Measure voltage between terminal 4 of IATS harness connector and chassis ground.

      Specification : Approx. 5V

    4. Is the measured voltage within specification ?

      YES 

      NO 

      • Go to " 2Check short to ground in harness" procedure.
  2. Check short to ground in harness
    1. IG "OFF" and disconnect IATS connector and PCM connector.
    2. Measure resistance between terminal 4 of IATS harness connector and chassis ground.
    3. Measure resistance between terminals 4 and 5 of IATS harness connector.
    4. Measure resistance between terminals 4 and 3 of IATS harness connector.

      Specification : Infinite

    5. Is the measured resistance within specification?

      YES 

      NO 

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