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Home >> Kia >> 2012 >> Optima Hybrid >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System Diagnosis (1 Of 2) - HEV >> DTC P0112: Intake Air Temperature Sensor 1 Circuit Low Input >> Inspection Repair >> Component Inspection
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Component Inspection

  1. Ignition "OFF".
  2. Disconnect IATS connector.
  3. Measure the resistance between signal terminal and ground terminal of the sensor connector(Component side).
    TERMINAL RESISTANCE SPECIFICATION

    Temp.(°C) Temp.(°F) Resistance(kΩ)
    -10 14 8.5 ~ 9.7
    0 32 5.4 ~ 6.1
    10 50 3.5 ~ 3.9
    20 68 2.3 ~ 2.5
    30 86 1.6 ~ 1.7
    80 176 Approx. 0.3
    Fig 1: Measuring Resistance Between Sensor Connector Signal And Ground Terminal
    G08305802Courtesy of KIA MOTORS AMERICA, INC.
  4. Is resistance within the specification?

    YES 

    • Check for poor connection between PCM and component: backed out terminal, improper mating, broken locks or poor terminal to wire connection. Repair as necessary and go to "VERIFICATION OF VEHICLE REPAIR " procedure.

    NO 

    • Check IATS for contamination, deterioration, or damage. Substitute with a known-good IATS and check for proper operation. If the problem is corrected, replace IATS and then go to "VERIFICATION OF VEHICLE REPAIR " procedure.
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