Component Inspection

Check IATS

IG "OFF" and disconnect IATS connector.

Measure resistance between terminals 4 and 5 of IATS connector. (Component side)

SPECIFICATION :

RESISTANCE SPECIFICATION

Temp. (°C/°F)	Resistance (kΩ)	Temp. (°C/°F)	Resistance (kΩ)
-40 (-40)	95.95-105.78	20 (68)	3.42-3.61
-20 (-4)	27.4-29.77	40 (104)	1.43-1.5
0 (32)	9.08-9.72	60 (140)	0.66-0.69
10 (50)	5.49-5.83	80 (176)	0.33-0.34

Fig 1: Measuring Resistance Between Terminal 4 And 5 Of IATS Connector

G04883327

Courtesy of KIA MOTORS AMERICA, INC.

Is the measured resistance within specification?
YES
- Go to step 2.
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. IG "OFF" and connect scan tool.
2. Disconnect IATS connector and connect probe to terminal 4 of IATS harness connector.
3. IG "ON" & ENG "OFF" and simulation Function on scan tool.
4. Simulate voltage at terminal 4 of IATS harness connector.
  
  Fig 2: Scan Tool Display - Simulation Scan Function
  Courtesy of KIA MOTORS AMERICA, INC.
5. Does the signal value of IAT sensor change 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.
NOTE: There is a memory reset function on scan tool 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.