Component Inspection

Check IATS resistance.

IG "OFF".
Disconnect IATS connector.

Measure resistance between terminal 1 and 5 of IATS connector (component side).

RESISTANCE SPECIFICATION

Temperature		Resistance [Ω ]
°C	°F	Resistance [Ω ]
-40	-40	41.26-47.49kΩ
-20	-4	14.26-16.02 kΩ
0	32	5.5-6.05 kΩ
20	68	2.35-2.54kΩ
40	104	1.11-1.19kΩ
60	140	0.57-0.6kΩ
80	176	0.31-0.32 kΩ

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

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 ECM/PCM.
1. IG "OFF" and disconnect MAFS/MAPS connector.
2. Connect scan tool and Key "ON".
3. Select simulation function on scan tool.
4. Simulate voltage at terminal 5 of IATS signal connector.
  
  Fig 2: Scan Tool Display - Simulate Voltage Of IATS Signal Connector
  Courtesy of KIA MOTORS AMERICA, INC.
5. Does the signal value of IATS 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 ECM/PCM and check for proper operation.
  - If the problem is corrected, replace ECM/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 ECM/PCM.
Before or after testing ECM/PCM on the vehicle, use this function to reuse the ECM/PCM.