With GST

Start engine and warm it up to normal operating temperature.
Select Service $01 with GST.
Check the mass air flow sensor signal with Service $01.

Fig 1: CONSULT-II Display - MAF Signal
Courtesy of NISSAN MOTOR CO., U.S.A.
Check for linear mass air flow sensor signal value rise in response to increases to about 4, 000 RPM in engine speed.
If NG, go to DIAGNOSTIC PROCEDURE .