With CONSULT-II

Start engine and warm it up to normal operating temperature.
Select "MANU TRIG" and adjust "TRIGGER POINT" to 100% in "DATA MONITOR" mode with CONSULT-II.
Select "HO2S1 (B1)" and "HO2S1 MNTR (B1)".
Hold engine speed at 2, 000 RPM under no load during the following steps.
Touch "RECORD" on CONSULT-II screen.

Fig 1: Selecting HO2S1 (B1) & HO2S1 MNTR (B1) With Consult-II
Courtesy of NISSAN MOTOR CO., U.S.A.
Check the following.
- "HO2S1 MNTR (B1)" in "DATA MONITOR" mode changes from "RICH" to "LEAN" to "RICH" more than 5 times in 10 seconds.
  5 times (cycles) are counted as shown.
  
  Fig 2: Identifying HO2S1 MNTR (B1) Cycles
  Courtesy of NISSAN MOTOR CO., U.S.A.
- "HO2S1 (B1)" voltage goes above 0.6V at least once.
- "HO2S1 (B1)" voltage goes below 0.3V at least once.
- "HO2S1 (B1)" voltage never exceeds 1.0V.
  
  Fig 3: Identifying HO2S1 MNTR (B1) Voltage
  Courtesy of NISSAN MOTOR CO., U.S.A.
CAUTION:
- Discard any heated oxygen sensor which has been dropped from a height of more than 0.5 m (19.7 in) onto a hard surface such as a concrete floor; use a new one.
- Before installing new oxygen sensor, clean exhaust system threads using Oxygen Sensor Thread Cleaner tool J-43897-18 or J-43897-12 and approved anti-seize lubricant.