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Home >> Kia >> 2001 >> Sephia Base, Standard >> Repair and Diagnosis (Single Page) >> Engine Performance >> System >> Engine Controls - Self-Diagnostics - SEPHIA & Spectra >> Diagnostic Trouble Codes >> DTC P0112: Intake Air Temperature (IAT) Sensor Circuit Low Input >> Procedure
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DTC P0112: Intake Air Temperature (IAT) Sensor Circuit Low Input: Procedure

  1. Turn ignition off. Disconnect IAT sensor 2-pin connector. Turn ignition on. Measure voltage between ground and IAT sensor harness connector terminal No. 1 (Blue/Green wire). If voltage is about 5 volts, go to next step. If voltage is more than 5 volts, repair short to power in Blue/Green wire between ECM and IAT sensor. If voltage is less than 5 volts, repair open in Blue/Green wire between ECM and IAT sensor.
  2. Turn ignition off. Disconnect ECM 88-pin connector. Measure resistance of Black/Green wire between IAT sensor harness connector terminal No. 2 and ECM harness connector terminal No. 71. See Figure . If resistance is less than one ohm, check IAT sensor connector and ECM connector for loose, damaged or corroded terminals. If problem exists, repair as necessary appropriate connector. If resistance is one ohm or more, repair open in Black/Green wire between IAT sensor and ECM.
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