Component Inspection

■ Engine Coolant Temperature Sensor (ECTS) Performance Inspection 

1. Ignition "OFF".
2. Disconnect ECTS connector.
3. Measure resistance between Pin No. 3 (Signal) terminal and Pin No. 1 (Ground) terminal of the ECTS. (component side)

   Specification:  Approx. 1.8 kΩ at 81.9°F (27°C)

   Fig 1: Scantool Display - Resistance Of ECTS

   Courtesy of KIA MOTORS AMERICA, INC.

■ Intake Air Temperature Sensor (IATS) Performance Inspection 

1. Ignition "OFF".
2. Disconnect IATS connector.
3. Measure resistance between Pin No. 3 (Signal) terminal and Pin No. 4 (Ground) terminal of the IATS. (component side)

   Specification:  Approx. 1.5 kΩ at 83.3°F (28.5°C)

   Fig 2: Scantool Display - Resistance Of IATS

   Courtesy of KIA MOTORS AMERICA, INC.
4. Does the IATS and ECTS operate properly? (Check variation)

   YES 

   • Go to "Verification of Vehicle Repair " procedure.

   NO 

   • Carefully re-do this troubleshooting guide steps.
   • If problem still occurs, replace ECTS and IATS and then go to "Verification of Vehicle Repair " procedure.