2. Check MAF Sensor Power Supply Circuit

WARNING: This page is about a different car, the 2004 Infiniti M45. However, it is still accessible from the selected car via links, so may be relevant.

Disconnect MAF sensor harness connector.
Turn ignition switch ON.

Fig 1: Identifying MAF Sensor
Courtesy of NISSAN MOTOR CO., U.S.A.
Check voltage between MAF sensor terminals 2, 4 and ground with CONSULT-II or tester.

Fig 2: Checking Voltage Between MAF Sensor Terminals & Ground
Courtesy of NISSAN MOTOR CO., U.S.A.

Fig 3: Inspecting Condition Chart
Courtesy of NISSAN MOTOR CO., U.S.A.

OK or NG
1. OK: GO TO 4. CHECK MAF SENSOR GROUND CIRCUIT FOR OPEN AND SHORT .
2. NG: GO TO 3.