With CONSULT-II

Start engine and warm it up to normal operating temperature.
Select "DATA MONITOR" mode with CONSULT-II.
Hold engine speed at 2,000 RPM and check one of the following.
- "HO2S1 (B1)/(B2)" voltage should go above 0.70V at least once.
- "HO2S1 (B1)/(B2)" voltage should go below 0.21V at least once.
  If the check result is NG, perform Diagnostic Procedure .
  
  If the check result is OK, perform the following step.
Let engine idle at least 5 minutes.
Maintain the following condition at least 50 consecutive seconds.

Fig 1: Testing Conditions
Courtesy of NISSAN MOTOR CO., U.S.A.

During this test, P0132 and/or P0152 may be displayed on CONSULT-II screen.
If DTC is detected, go to Diagnostic Procedure .