Kia Cee'd: Engine Control System / Intake Air Temperature Sensor (IATS) Description and operation

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. ...

Intake Air Temperature Sensor (IATS) Specifications

Specification   Temperature Resistance (kΩ) °C °F -40 -40 40.93 ~ 48.35 ...

Other information:

Kia Cee'd Service Manual: Crankshaft Position Sensor (CKPS) Description and operation
Description Crankshaft Position Sensor (CKPS) detects the crankshaft position and is one of the most important sensors of the engine control system. If there is no CKPS signal input, the engine may stop because of CKPS signal missing. This sensor is installed in ladder fra ...

Kia Cee'd Owners Manual: Temperature control
The temperature will increase to the maximum (HI) by turning the knob to the right extremely. The temperature will decrease to the minimum (Lo) by turning the knob to the left extremely. When turning the knob, the temperature will increase or decrease by 0.5°C/1°F. When set to the l ...