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Home >> Hyundai >> 2017 >> Sonata Base >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 34 (Engine Control System Diagnosis - 1.6L (1 Of 3) (Except HEV)) >> DTC P0112: Intake Air Temperature Sensor 1 Circuit Low Input >> Component Inspection

Component Inspection

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  1. IG "OFF".
  2. Disconnect IATS connector.
  3. Measure resistance between signal and ground terminal of IATS connector (Component Side).

    Specification: 

    Temperature [°C (°F)] Resistance [kΩ]
    -40 (-40) 40.93~48.35
    -30 (-22) 23.43~27.34
    -20 (-4) 13.89~16.03
    -10 (14) 8.50~9.71
    0 (32) 5.38~6.09
    10 (50) 3.48~3.90
    20 (68) 2.31~2.57
    25 (77) 1.90~2.10
    30 (86) 1.56~1.74
    40 (104) 1.08~1.21
    60 (140) 0.54~0.62
    80 (176) 0.29~0.34
  4. Is the measured resistance within specification?

    YES 

    • Many malfunctions in the electrical system are caused by poor harness(es) and terminals. Faults can also be caused by interference from other electrical systems, and mechanical or chemical damage. So, check poor connections and the related circuit between ECM and component thoroughly. Repair as necessary and go to "VERIFICATION OF VEHICLE REPAIR " procedure.

    NO 

    • Substitute with a known - good IATS and check for proper operation.

      If the problem is corrected, replace IATS and go to "VERIFICATION OF VEHICLE REPAIR " procedure.