DTC Confirmation Test "B" (Using Generic Scan Tool)

WARNING: This page is about a different car, the 2002 Nissan Maxima and 2002 Infiniti I35. However, it is still accessible from the selected car via links, so may be relevant.

NOTE: Use the following test to check overall function of MAF sensor circuit. During this test, 1st trip DTC may not be confirmed.

Start engine and warm to normal operating temperature. Using scan tool, select MODE 1, and observe MAF sensor signal. Increase engine speed to 4000 RPM. There should be a linear increase in MAF signal in response to engine speed increase. If operation is as specified, system is okay at this time. If operation is not as specified, go to DIAGNOSTIC PROCEDURE .