Component Description

The intake air temperature sensor is mounted to the air duct housing. 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.

Fig 1: Identifying Intake Air Temperature Sensor

Courtesy of NISSAN MOTOR CO., U.S.A.

Fig 2: Intake Air Temperature Sensor Voltage And Resistance Chart

Courtesy of NISSAN MOTOR CO., U.S.A.

CAUTION: Do not use ECM ground terminals when measuring input/output voltage. Doing so may result in damage to the ECM's transistor. Use a ground other than ECM terminals, such as the ground.

Fig 3: Identifying Intake Air Temperature Sensor Resistance Graph

Courtesy of NISSAN MOTOR CO., U.S.A.