With CONSULT-III

Turn ignition switch ON.
Start engine and warm it up to normal operating temperature.
If engine cannot be started, go to "DIAGNOSIS PROCEDURE ".
Select "DATA MONITOR" mode with CONSULT-III.
Check the voltage of "MAS A/F SE-B1" with "DATA MONITOR".
Increases engine speed to about 4, 000 RPM.
Monitor the linear voltage rise in response to engine speed increases.
If NG, go to "DIAGNOSIS PROCEDURE ".

If OK, go to following step.

Fig 1: Mass Air Flow Sensor Voltage Graph
Courtesy of NISSAN MOTOR CO., U.S.A.

Maintain the following conditions for at least 10 consecutive seconds.

ENG SPEED CONDITION REFERENCE CHART

ENG SPEED	More than 2, 000 RPM
THRTL SEN 1	More than 3V
THRTL SEN 2	More than 3V
Shift lever	Suitable position
Driving location	Driving vehicle uphill (Increased engine load) will help maintain the driving conditions required for this test.