Procedure For Malfunction B

With GST 

1. Start engine and warm it up to normal operating temperature.
2. Select "MODE 1" with GST.
   Fig 1: Scan Tool Display

   Courtesy of NISSAN MOTOR CO., U.S.A.
3. Check the mass air flow sensor signal with "MODE 1".
4. Check for linear mass air flow rise in response to increases to about 4,000 RPM in engine speed.
5. If NG, go to DIAGNOSTIC PROCEDURE .