P0127

P0127 IAT SENSOR

Description

The intake air temperature sensor is built-into mass air flow sensor (1). The sensor detects intake air temperature and transmits a signal to the ECM.

The temperature sensing unit uses a thermistor which is sensitive to the change in temperature. Electrical resistance of the thermistor decreases in response to the temperature rise.

NOTE: ECM uses only the intake air temperature sensor (bank 1) for engine control and self-diagnosis. It does not use the intake air temperature sensor (bank 2).

DTC Logic

DTC DETECTION LOGIC

DTC CONFIRMATION PROCEDURE

Step 1-2:

Step 2 (Continued):

Diagnosis Procedure

Step 1-3:

Component Inspection

P0127

Step 1-2:

Step 2 (Continued):

Step 1-3:

Step 1: