2. Check Intake Air Temperature Sensor Power Supply Circuit

1. Disconnect mass air flow sensor (intake air temperature sensor is built-into) harness connector.
2. Turn ignition switch ON.
3. Check voltage between mass air flow sensor terminal 5 and ground.
   1. Voltage: Approximately 5 V 

Fig 1: Checking voltage between mass air flow sensor terminal 5 & ground

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

OK or NG 

OK: GO TO 3.

NG: Repair open circuit or short to ground or short to power in harness or connectors.