1. Check Intake Air Temperature Sensor Power Supply Circuit

1. Turn ignition switch OFF.
2. Disconnect mass air flow sensor (intake air temperature sensor is built-into) harness connector.
3. Turn ignition switch ON.
   Fig 1: Locating MAF/IAT Sensor

   Courtesy of NISSAN MOTOR CO., U.S.A.
4. Check voltage between mass air flow sensor terminal 2 and ground.
   1. Voltage: Approximately 5V 

OK or NG 

1. OK: GO TO 2.
2. NG: Repair harness or connectors.

Fig 2: Check Intake Air Temperature Sensor Power Supply Circuit

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