Inspection Procedures

1. Thoroughly check connectors for looseness, poor connection, bending, corrosion, contamination, deterioration, or damage.

   Are all connectors good? 

Yes: Go to next

No: Repair or replace it.

1. Turn ignition switch to OFF position and disconnect IATS connector.
2. Measure resistance between terminals 5 and 2 of the IATS connector.
   Fig 1: Measuring Resistance Between Terminals 5 & 2 Of IATS Connector

   Courtesy of HYUNDAI MOTOR CO.
   • Refer to  SPECIFICATION   for more information. 

     Is resistance within specification? 

   Yes: Go to next

   No: Replace IATS.

3. CHECK POWER TO IATS
   1. Turn ignition switch to OFF position and disconnect IATS connector.
   2. Turn ignition switch to ON position.
   3. Measure voltage between terminal 2 of the IATS harness connector and chassis ground.
   Fig 2: Measuring Voltage Between Terminal 2 Of IATS Harness Connector & Chassis Ground

   Courtesy of HYUNDAI MOTOR CO.
   • Specification: approximately B+ 

     Is voltage within specification? 

   Yes: Go to next

   No: Repair open or short to chassis ground in harness.

4. CHECK FOR SHORT TO GROUND IN HARNESS

1. Turn ignition switch to OFF position.
2. Check for short in IATS signal harness between terminal 5 of the IATS harness connector and chassis ground.
3. Check for short in IATS signal harness between terminals 1 and 5 of the IATS harness connector.

Fig 3: Checking For Short In IATS Signal Harness Between Terminal 5 Of IATS Harness Connector & Chassis Ground

Courtesy of HYUNDAI MOTOR CO.

• Specification: infinite 

Does each resistance indicate open? 

Yes: Proceed with ECM PROBLEM PROCEDURE  .

No: Repair short to chassis ground in harness.