C 2500 Suburban 2WD V8-6.5L DSL Turbo VIN F (1995)
Intake Air Temperature Sensor: Testing and Inspection
A scan tool displays temperature of the air entering the engine and should read close to ambient air temperature when the engine is cold, and rise
as underhood temperature increases. If the engine has not been run for several hours (overnight), the Intake Air Temperature (IAT) sensor
temperature and engine coolant temperature should read close to each other. A failure in the IAT sensor circuit should set Diagnostic Trouble
Code (DTC) 47 or 48. The DTC chart also contains a "Diagnostic Aid" to check for sensor resistance values relative to temperature. Refer to
Diagnostic Trouble Code Charts/Diagnostic Charts. See: Testing and Inspection
