Signal Circuit Inspection

WARNING: This page is about a different variant/trim than selected.

■ Check Open or Short in signal circuit

IG "OFF".
Disconnect IATS connector.
IG "ON" & ENG "OFF".
Measure the voltage between signal terminal of IATS harness connector and chassis ground.
Specification: Approx. 5V
Is the measured resistance within specification?

YES

Go to "Check short to ground in harness" as follows.

NO

Repair or replace as necessary and then, go to "VERIFICATION OF VEHICLE REPAIR " procedure.

■ Check Short to ground in signal circuit

IG "OFF".
Disconnect IATS and ECM connector.
Measure resistance between signal and ground terminal of IATS harness connector.
Specification: Infinite
Is the measured voltage within specification?
YES
- Go to "GROUND CIRCUIT INSPECTION " procedure.
NO
- Repair or replace as necessary and then, go to "VERIFICATION OF VEHICLE REPAIR " procedure.