Inlet/Intake Air Temperature Sensor

The inlet air temperature sensor replaces the intake air temperature sensor and the battery temperature sensor. The PCM uses the information from the inlet air temperature sensor along with other stored parameters to determine values to use as an intake air temperature and a battery temperature. The IAT sensor value is used by the PCM to determine air density.

The PCM uses this information to calculate:

• Injector pulse width
• Adjustment of ignition timing (to prevent spark knock at high intake air temperatures)