MONITOR Scan tool DATA

Ignition "ON" & Engine "OFF".
Disconnect IATS connector.
Connect Scan tool and monitor the "INT. AIR TEMP. SNSR(V)" parameter on the Scan tool data list.
Jumper the terminals 1 and 5 of the sensor harness connector together.
Specification: Approx. 0V

Fig 1: Scan Tool Display Screen - INT. AIR TEMP. SNSR(V)
Courtesy of HYUNDAI MOTOR CO.
Is IAT data near the specified value?
Yes:
- Possibility of sensor malfunction. Go to "COMPONENT INSPECTION " procedure.
No:
- Go to next step as below.
Jumper the terminal 5 of the IATS harness connector to chassis ground.
Read "INT. AIR TEMP. SNSR(V)" parameter on the Scan tool.
Specification: Approx. 0V
Is displayed IAT data near the specified value?
Yes:
- Possibility of open in IATS ground circuit. Go to "GROUND CIRCUIT INSPECTION " procedure.
No:
- Possibility of open or short to battery in IAT signal circuit. Go to "SIGNAL CIRCUIT INSPECTION " procedure.