2. Check Intake Air Temperature Sensor Power Supply Circuit

WARNING: This page is about a different car, the 2004 Infiniti Q45. However, it is still accessible from the selected car via links, so may be relevant.

Disconnect mass air flow sensor (intake air temperature sensor is built-into) harness connector.
Turn ignition switch ON.
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.