Component Inspection

Check IATS resistance

IG "OFF".
Disconnect IATS connector.

Measure resistance between terminal 3 and 4 of IATS connector. (Component Side)

Specification :

SPECIFICATION CHART

Temperature (°C)	Resistance (Ω)	Temperature (°C)	Resistance (Ω)
-40±1	40931 ~ 48352	60±1	543 ~ 616
-20±1	13890 ~ 16025	70±1	396 ~ 452
0±1	5384 ~ 6085	80±1	294 ~ 337
20±1	2311 ~ 2565	90±1	221 ~ 256
30±1	1564 ~ 1736	100±1	169 ~ 196
40±1	1077 ~ 1205	110±1	130 ~ 153
50±1	758 ~ 854	120±1	102 ~ 120

Fig 1: Measuring Resistance Between Terminal 3 And 4 Of IATS Connector (Component Side)

G06830447

Courtesy of KIA MOTORS AMERICA, INC.

Is the measured resistance within specification?
YES
1. Go to " 2 Check ECM" as follows.
NO
1. 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.

Check ECM
1. IG "OFF" and disconnect MAFS/MAPS connector.
2. Connect scantool and Key "ON".
3. Select simulation function on scantool.
4. Simulate voltage at terminal 3 of IATS signal connector.
  
  Fig 2: Scantool Display - Intake Air Temperature Sensor
  Courtesy of KIA MOTORS AMERICA, INC.
5. Does the signal value of IATS change according to simulation voltage?
  YES
  1. Thoroughly check connectors for looseness, poor connection, bending, corrosion, contamination, deterioration, or damage. Repair or replace as necessary and go to "VERIFICATION OF VEHICLE REPAIR " procedure.
  NO
  1. Substitute with a known - good ECM and check for proper operation.
    If the problem is corrected, replace ECM and go to "VERIFICATION OF VEHICLE REPAIR " procedure.
    
    CAUTION: There is a memory reset function on scantool that can erase optional parts automatically detected and memorized by PCM.
    Before or after testing PCM on the vehicle, use this function to reuse the PCM on the others