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. 5V, go to DIAGNOSTIC PROCEDURE .

If the indication is not constantly approx. 5V, go to next step.
Turn ignition switch OFF, wait at least 10 seconds and then restart engine
Drive and accelerate vehicle to more than 40 km/h (25 MPH) within 20 seconds after restarting engine

Maintain the following conditions for about 20 consecutive seconds

Fig 1: Selecting "A/F SEN1 (B1)" Or "A/F SEN1 (B2)" In "DATA MONITOR" Mode

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

DIAGNOSIS PROCEDURE CONDITION

NOTE:

Keep the accelerator pedal as steady as possible during the cruising.
If this procedure is not completed within 1 minute after restarting engine at step 4, return to step 4.