Signal Circuit Inspection
- Check voltage
- IG "OFF" and disconnect IATS connector.
- IG "ON" and ENG "OFF"
- Measure voltage between signal terminal of IATS harness connector and chassis ground.
- Specification : Approx. 5V
- Is the measured voltage within specification?
YES
- Go to "COMPONENT INSPECTION " procedure.
NO
- Go to 2 "Check short to ground in harness" procedure.
- Check short to ground in harness
- IG "OFF" and disconnect IATS connector and PCM connector.
- Measure resistance between signal terminal of IATS harness connector and chassis ground. (Measurement "A")
- Measure resistance between signal and ground terminals of IATS harness connector. (Measurement "B")
- Measure resistance between signal terminal of IATS harness connector and ground terminal of MAFS harness connector. (Measurement "B")
- Specification : Infinite
Courtesy of HYUNDAI MOTOR CO.
- Is the measured resistance within specification?
YES
- Go to "COMPONENT INSPECTION " procedure.
NO
- Repair short to ground in harness and go to "VERIFICATION OF VEHICLE REPAIR " procedure.