Disconnect the IATS and PCM/ECM connectors and inspect for looseness, poor connection, bending, corrosion, contamination, deterioration or damage. Reconnect the connectors.

Connect the GDS and go to “Current Data”.

Monitor IATS values in Current Data, check and wiggle the harness(es), connector(s), and terminal(s).

Any change in the values indicates a poor connection. Was a connector problem found?

	▶ Repair the connector. Go to "Verification of Vehicle Repair" procedure.
	▶ Go to "Signal Circuit Inspection" procedure.

IG "OFF". Disconnect IATS connector and PCM/ECM connector.

Measure the resistance between signal terminal of IATS harness connector and chassis ground.

Is resistance within the specification?

	▶ Go to next step as below.
	▶ Repair as necessary and go to "W/Harness Inspection" procedure.