6. Check Air Fuel Ratio (A/F) Sensor 1 Power Supply Circuit

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

Turn ignition switch OFF.
Disconnect air fuel ratio (A/F) sensor 1 harness connector.

Fig 1: Disconnect Air Fuel Ratio (A/F) Sensor 1 Harness Connector
Courtesy of NISSAN MOTOR CO., U.S.A.
Turn ignition switch ON.
Check voltage between A/F sensor 1 terminal 3 and ground with CONSULT-II or tester.
1. Voltage: Battery voltage

OK or NG

OK: GO TO 8 .
NG: GO TO 7.

Fig 2: Check Voltage Between A/F Sensor 1 Terminal 3 And Ground With CONSULT-II Or Tester

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