Check Open In Harness
- IG "OFF" and disconnect IATS connector and then IG "ON".
- Measure voltage between signal terminal of IATS harness connector and chassis ground. (Measurement "A")
- Measure voltage between signal and ground terminals of IATS harness connector. (Measurement "B")
Specification : Voltage difference between measurement "A" and "B" is below 200mV.
- Is the measured voltage within specification ?
YES:
- Go to "COMPONENT INSPECTION " procedure.
NO:
- Repair contact resistance or open in harness and go to "VERIFICATION OF VEHICLE REPAIR " procedure.