Component Inspection

Check IATS

Ignition "OFF".
Disconnect IATS connector.

Measure resistance between terminals "1" and "3" of the IAT sensor connector.

Specification:

IATS SPECIFICATIONS

Temperature (°C)	-40 (-40°F)	-20 (-4°F)	-10 (14°F)	0 (32°F)	10 (50°F)	20 (68°F)	40 (104°F)	60 (140°F)	100 (212°F)	120 (248°F)
Resistance (Ω) Approx.	39,260	13,850	8,609	5,499	3,604	2,420	1,166	609	202	127

Fig 1: Measuring Resistance Between Terminals 1 And 3 Of IAT Sensor Connector

G07346615

Courtesy of KIA MOTORS AMERICA, INC.

Is the measured resistance within specifications?
YES
- Go to " 2 Check PCM" as below.
NO
- 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 PCM.
1. Ignition "OFF".
2. Connect Scantool and Ignition "ON" & Engine "OFF".
3. Select simulation function on scantool.
4. Simulate voltage at terminal "1" of IAT sensor signal connector.
  
  Fig 2: Simulating Voltage At Terminal 1 Of IAT Sensor Signal Connector
  Courtesy of KIA MOTORS AMERICA, INC.
5. Does the signal value of IAT sensor changes according to simulation voltage?
  YES
  - 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
  - Substitute with a known-good PCM and check for proper operation.
    If the problem is corrected, replace PCM and go to "VERIFICATION OF VEHICLE REPAIR " procedure.