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Component Inspection

Check IATS.

Ignition "OFF".
Disconnect IATS connector.

Measure resistance between terminal 5 and 3 of IAT connector (Component side).

Specification:

TEMPERATURE SPECIFICATION

Temperature (°C/°F)	0°C (32°F)	20°C (68°F)	40°C (104°F)	80°C (176°F)
Voltage (V)	3.4~3.6	2.5~2.7	1.7~1.9	0.6~0.8
Resistance (Ω)	5.3 ~6.7	2.3~3.0	1.0~1.5	0.3~0.42

Fig 1: Measuring Resistance Between Terminal 5 And 3 Of IAT Connector (Component Side)

G07703465

Is the measured resistance within specifications?
YES
- Go to " 2 Check PCM" as below.
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.

Check PCM.
1. Ignition "OFF".
2. Connect Scantool and Ignition "ON" & Engine "OFF".
3. Select simulation function on scantool.
4. Simulate voltage at terminal 5 of IAT sensor signal connector.
  
  Fig 2: Scantool Display - Simulate Voltage At Terminal 5 Of IAT Sensor Signal Connector
5. Does the signal value of IAT sensor changes according to simulation voltage?
  YES
  - Thoroughly check connectors for looseness, poor connection, bending, corrosion, contamination, deterioration, or damage. Repair or replace as necessary and go to "VERIFICATION OF VEHICLE REPAIR " procedure.
  NO
  - 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.