4. Check MAF 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 (MAF) sensor harness connector.
Turn ignition switch ON.
Check voltage between MAF sensor terminals 2, 4 and ground with CONSULT-II or tester.

Fig 1: Checking Voltage Between MAF Sensor Terminals 2, 4 & Ground (1 Of 2)

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

Fig 2: Checking Voltage Between MAF Sensor Terminals 2, 4 & Ground (1 Of 2)

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

OK or NG

OK: GO TO 6. CHECK MAF SENSOR GROUND CIRCUIT FOR OPEN AND SHORT .

NG: GO TO 5.