Ground Circuit Inspection

IG KEY "OFF".
Disconnect IATS connector.
IG KEY "ON" & ENG "OFF"
Measure the voltage between signal terminal of IATS harness connector and chassis ground.(A)
Measure the voltage between signal and ground terminal of IATS harness connector and chassis ground.(B)
Specification: The Difference between "A" and "B" is below 200mV.

3
Is the measured voltage within specification?
YES
- Go to "Component Inspection" procedure below.
NO
- Check for Open in ground circuit. Repair as necessary and then go to "Verification of Vehicle Repair " procedure.