Kia Optima: Intake Air Temperature Sensor (IATS) Description and Operation - Engine Control System - Engine Control/Fuel SystemKia Optima: Intake Air Temperature Sensor (IATS) Description and Operation

Description
Intake Air Temperature Sensor (IATS) is included inside Manifold Absolute Pressure Sensor and detects the intake air temperature.
To calculate precise air quantity, correction of the air temperature is needed because air density varies according to the temperature. So the ECM uses not only MAPS signal but also IATS signal. This sensor has a Negative Temperature Coefficient (NTC) Thermister and it''s resistance changes in reverse proportion to the temperature.


Manifold Absolute Pressure Sensor (MAPS) Repair procedures
Inspection 1. Connect the GDS on the Data Link Connector (DLC). 2. Measure the output voltage of the MAPS at idle and IG ON. Test ConditionOutput Voltage (V)IG ON3.9 ~ 4.1Idle0.8 ~ 1.6 ...

Intake Air Temperature Sensor (IATS) Specifications
Specification Temperature [°C(°F)]Resistance (k?)-40(-40)40.93 ~ 48.35-20(-4)13.89 ~ 16.030(32)5.38 ~ 6.0910(50)3.48 ~ 3.9020(68)2.31 ~ 2.5740(104)1.08 ~ 1.2150(122)1.56 ~ 1.7460(140)0.54 ~ 0.6 ...

See also:

Repair procedures
Inspection Lighting Switch Inspection With the multifunction switch in each position, make sure that continuity exists between the terminals below. If continuity is not as specified, replace t ...

General
1. Basically, all measurements in this manual are taken with a tracking gauge. 2. When a measuring tape is used, check to be sure there is no elongation, twisting or ...

High Voltage Shut-off Procedures
High Voltage Shut-off Procedures     Be sure to read and follow the “General Safety Information and Caution” before doing any work related with the high voltage sys ...

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