With Consult-II

Start engine and warm it up to normal operating temperature.
Select "A/F SEN1 (B1)" in "DATA MONITOR" mode with CONSULT-II.
Check "A/F SEN1 (B1)" indication.
If the indication is constantly approx. 0V, go to "DIAGNOSTIC PROCEDURE ".

If the indication is not constantly approx. 0V, go to next step.
Select "A/F SEN1 (B1) P1278/P1279" of "A/F SEN1" in "DTC WORK SUPPORT" mode.
Touch "START".

Fig 1: Displaying Data Monitor Mode With Consult-II
Courtesy of NISSAN MOTOR CO., U.S.A.
When the following conditions are met, "TESTING" will be displayed on the CONSULT-II screen.

Fig 2: Specifications Table
Courtesy of NISSAN MOTOR CO., U.S.A.

Fig 3: Displaying OUT OF CONDITION With Consult-II Screen
Courtesy of NISSAN MOTOR CO., U.S.A.

If "TESTING" is not displayed after 20 seconds, retry from step 2.
Following the instructions of CONSULT-II screen, set D position with "OD" OFF and release accelerator pedal fully.

Fig 4: Displaying TESTING With Consult-II 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.

Fig 5: Displaying COMPLETED With Consult-II Screen
Courtesy of NISSAN MOTOR CO., U.S.A.
Touch "BACK" and "MODE", then select "SELF-DIAG RESULT" mode.
If P1271 is displayed, go to "DIAGNOSTIC PROCEDURE ".

If another DTC is displayed, go to the corresponding Diagnostic Procedure.