With CONSULT-II

Start engine and warm it up to normal operating temperature.
Select "A/F SEN1 (B1)" or "A/F SEN1 (B2)" in "DATA MONITOR" mode with CONSULT-II.
Check "A/F SEN1 (B1)" or "A/F SEN1 (B2)" indication.
If the indication is constantly approx. 1.5V and does not fluctuates, go to DIAGNOSTIC PROCEDURE . If the indication fluctuates around 1.5V, go to next step.
Select "A/F SEN1 (B1) P1276" or "A/F SEN1 (B2) P1286" of "A/F SEN1" in "DTC WORK SUPPORT" mode with CONSULT-II.
Touch "START".
When the following conditions are met, "TESTING" will be displayed on the CONSULT-II screen.

Fig 1: Identifying Conditions To Be Met For Testing
Courtesy of NISSAN MOTOR CO., U.S.A.

If "TESTING" is not displayed after 20 seconds, retry from step 2.

Fig 2: Displaying OUT OF CONDITION Screen
Courtesy of NISSAN MOTOR CO., U.S.A.
Release accelerator pedal fully.
NOTE: Never apply brake during releasing the accelerator pedal.

Fig 3: Displaying TESTING Screen
Courtesy of NISSAN MOTOR CO., U.S.A.
Make sure that "TESTING" changes to "COMPLETED".
If "TESTING" changed to "OUT OF CONDITION", retry from step 6.
Make sure that "OK" is displayed after touching "SELF-DIAG RESULT".
If "NG" is displayed, go to DIAGNOSTIC PROCEDURE .

Fig 4: Displaying COMPLETED Screen
Courtesy of NISSAN MOTOR CO., U.S.A.