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With GST

Start engine and warm it up to normal operating temperature.
Select MODE 1 with GST.
Check the mass air flow sensor signal with MODE 1.
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 .

Fig 1: Display MAF For Malfunction B
Courtesy of NISSAN MOTOR CO., U.S.A.