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Check Resistance Of IATS

IG "OFF" and disconnect IATS connector.

Measure resistance between signal and ground terminals of IATS connector after checking out the temperature of IATS with scantool.

SPECIFICATION :

IATS SPECIFICATION

Temp. (°C/°F)	Resistance (kΩ)	Temp. (°C/°F)	Resistance (kΩ)
-40 (-40)	95.95 ~ 105.78	20 (68)	3.42 ~ 3.61
-20 (-4)	27.4 ~ 29.77	40 (104)	1.43 ~ 1.5
0 (32)	9.08 ~ 9.72	60 (140)	0.66 ~ 0.69
10 (50)	5.49 ~ 5.83	80 (176)	0.33 ~ 0.34

Is the measured resistance within specification ?
YES:
- Substitute with a known - good PCM and check for proper operation. If the problem is corrected, replace PCM and go to "VERIFICATION OF VEHICLE REPAIR " procedure.
NO:
- Substitute with a known - good IATS and check for proper operation. If the problem is corrected, replace IATS and go to "VERIFICATION OF VEHICLE REPAIR " procedure.