Signal Circuit Inspection

IG "OFF" and disconnect IATS connector.
IG "ON" & ENG "OFF"
Measure voltage between terminal 4 of IATS harness connector and chassis ground.
Specification: Approx. 5V
Is the measured voltage within specification ?
YES
- Check short to battery in harness.
- If OK, go to "GROUND CIRCUIT INSPECTION " procedure.
- If N.G, repair or replace as necessary and then go to "VERIFICATION OF VEHICLE REPAIR " procedure.
NO
- Repair open or short to ground in harness and go to "VERIFICATION OF VEHICLE REPAIR " procedure.