Component Inspection
- Check IATS resistance
- IG "OFF" and disconnect IATS connector.
- Measure resistance between signal and ground terminals of IATS connector after checking out the temperature of IATS with GDS (Component Side)RESISTANCE SPECIFICATION
Temp. (°C) Resistance (kΩ) -40 40.93 ~ 48.35 -20 13.89 ~ 16.03 0 5.38 ~ 6.09 10 3.48 ~ 3.90 20 2.31 ~ 2.57 40 1.08 ~ 1.21 60 0.54 ~ 0.66 80 0.29 ~ 0.34 - Is the measured resistance within specification?
YES
- Substitute with a known - good ECM and check for proper operation. If the problem is corrected, replace ECM 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.