Component Location
Description
1. General Description

The intake air temperature sensor (IATS) is intergrated in MAF sensor. This part employs a thermistor (NTC) which is sensitive to changes in temperature.The electric resistance of a thermistor decreases as the temperature increases, and increases as the temperature decreases. The power source in the ECM is supplied to the IATS via a resistor in the ECM. The ECM judges intake air temperature by the sensor output voltage and is used for injection quantity correction, injection time correction, starting fuel quantity correction as a compensation signal.

2. DTC Description

If the IAT sensor is reading an extremely low or high intake air temperature during two driving cycles, these codes will be set

DTC Detecting Condition

DTC NO.

Detecting Condition

Possible Cause

P 0112

P 0113

● P 0112 : Output signal < 112 mV

● P 0113 : Output signal > 4.9 V

● Engine Condition : IG ON

● Fuel Limit : NO

● Fuel Cut : NO

● EGR OFF : YES

● MIL : NO

● LIMP HOME MODE

Engine air temperature is fixed value of 100℃(212℉) by ECM

● Open or short in circuit

● IATS

● ECM

Specification

IATS

Normal Parameter

Temperature

20°C(68℉)

40°C(104℉)

60°C(140℉)

Resistance

2.29 ∼2.55 ㏀

1.1 ∼ 1.2 ㏀

0.56 ∼ 0.65 ㏀

Schematic Diagram
note
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