Kia Carnival (2007 year). Manual — part 68
COMPONENT INSPECTION
1. Connect a scantool on Diagnisis Link Connector (DLC).
2. Check MAPS output voltage at idle and IG ON.
Condition
Output Voltage (V)
Idle
0.8V ~ 1.6V
IG ON
3.9V ~ 4.1V
Intake Air Temperature
Sensor
(IATS)
2007 > 2.7L V6 GASOLINE >
INSPECTION
FUNCTION AND OPERATION PRICIPLE
Intake Air Temperature Sensor (IATS) is installed inside the Mass Air Flow Sensor (MAFS) 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 PCM uses not only MAFS signal but also IATS signal. This sensor has a
Negative Temperature Coefficient (NTC) and its resistance is in inverse proportion to the temperature.
SPECIFICATION
Temperature
Resistance (k
Ω)
°C
°F
-40
-40
100.87
-20
-4
28.58
0
32
9.40
10
50
5.66
20
68
3.51
40
104
1.47
60
140
0.67
80
176
0.33
CIRCUIT DIAGRAM
COMPONENT INSPECTION
1. Turn ignition switch OFF.
2. Disconnect IATS connector.
3. Measure resistance between IATS terminals 4 and 5.
4. Check that the resistance is within the specification.
Specification: Refer to SPECIFICATION.
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