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Monitor Scantool Data

Ignition "OFF" & Engine "OFF".
Install Scantool and Ignition "ON" & Engine "ON".

Monitor Intake Air Temperature Sensor parameter on Current data.

Specification: (Error range is 2~3%)

TEMPERATURE AND RESISTANCE REFERENCE CHART

Temperature (°C/°F)	-40 (-40°F)	-30 (-22°F)	-20 (-4°F)	0 (32°F)	20 (68°F)	80 (176°F)	100 (212° F)	110 (230° F)	120 (248° F)
Resistance (kΩ)	45.3	25.6	15.1	5.8	2.5	0.33	0.19	0.16	0.13
Voltage (V)	4.48	4.34	4.12	3.46	2.57	0.64	0.39	0.34	0.27

Is Current data displayed correctly?

Fig 1: Mass Air Flow Sensor Current Data

Fig 2: Screen Display - IAT Sensor Data At Open

Fig 3: Screen Display - IAT Sensor Data At Short

YES
- Fault is intermittent caused by poor contact in the sensor's and/or PCM's connector or was repaired and PCM memory was not cleared. 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
- Go to "W/HARNESS INSPECTION " procedure.